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OS/2 2.0 Questions and Answers
By Mark Chapman
IBM NDD National Support Center
Marietta, GA 30067
Marketing Qs & As
Q. Is it true that DOS users can upgrade to OS/2 2.0 for only $99 through the end of June
1992? If so, where do I get the upgrade form needed?
A. Yes, it is true. Just contact your dealer, or call 800-3IBM-OS2 to upgrade.
Q. Is it true that MS Windows users can upgrade to OS/2 2.0 for only $49 through the end
of July 1992? If so, where do I get the upgrade form needed?
A. Yes, it is true. Just contact your dealer, or call 800-3IBM-OS2 to upgrade.
Configuration and Setup Qs & As
Q. I've heard lots of rumors, but what are the real hardware requirements for OS/2 2.0?
A. Any PC with a 386SX (or higher) processor, 4MB or more of RAM, and a 60MB hard drive.
In many cases more memory and disk will be needed, depending on the user's needs. The
base operating system itself uses about 3.5MB of RAM and 16-29MB of fixed disk (depending
on what you choose to install). The remainder is available for application and data use. As
most users eventually run more programs concurrently than they anticipated at first, make
sure your system allows for growth if you are starting with near the minimum. Currently more
than 200 non-IBM PCs have passed IBM's OS/2 compatibility testing, with more coming. (This
list can be found in the OS/2 2.0 Tips section of the Technical Assistant.) Others are being
tested, and the list is updated monthly.
Q. If I install OS/2 2.0 on a PC that is not on the compatibility list, am I out of luck if I run
into problems?
A. No. Call the IBM Defect Support Center at 800-237-5511 and explain your problem. They
will attempt to resolve your problem. If they can't step you though a workaround to the
problem, or develop a patch to fix it within 90 days, you will be offered your money back for
the OS/2 purchase.
Q. Can OS/2 2.0 be installed from any drive besides A:?
A. Yes, to a degree. The operating system itself, and Extended Services can be installed
from a network drive (which can be any letter above C:). As far as physical diskette drives
are concerned, it must be the A: drive. However, on many systems (such as the PS/2 Models
57/90/95), the system can be configured to boot from any internal diskette drive, making that
drive the "A:" drive, regardless of cabling or physical position. Some systems also allow the
cables to be swapped (perhaps with other adjustments) to produce a new "A:" drive. Consult
your system vendor for directions.
Q. In the README file that comes with OS/2 (in the root directory, viewable in the
Information folder), there is reference to a SCSI driver called OS2SCSI.SYS, supposedly in \OS2,
yet I can't find it. Where is it?
A. This is a typo in the README file. The name is actually OS2SCSI.DMD, not .SYS.
Q. I understand that most DOS and Windows apps should run under OS/2, but what kinds of
programs are likely to fail?
A. 1) Those that could compromise the integrity of the operating system, such as VCPI
memory extenders and certain low-level disk utilities; 2) Those requiring extremely high
interrupt rates (typically more than 1,000 interrupts per second), including software to support
some fax and sound boards. 3) Those requiring a specific version of DOS. OS/2 2.0 provides
an emulation of DOS 5.0, but some applications may need DOS 3.3, for example, and won't
work with anything else. In this case, start a DOS image of the DOS 3.3 diskette (within a
VDM), and run the the application under real DOS 3.3 inside a VDM.
Some other applications may require special DOS Settings, and some may run with limited
function. But overall, the large majority of programs will run "as is", and as faster or faster
than before, with greater data integrity.
Q. In OS/2 1.3 there was a Program Properties option to start an application on bootup. How
do I "autostart" apps under 2.0?
A. Two ways: 1) Use Create Shadow from an application pull-down menu to copy the
application icon to the Startup folder; or 2) Leave the application running when you Shutdown
the system. All running apps will autostart upon bootup.
Q. Is there any way to set different execution priorities for individual DOS applications?
A. No. Application priority is set by the application programmer. Since DOS, unlike OS/2,
doesn't provide for multiple execution priority levels for apps there is no reason or way to
build them into DOS apps. Therefore when they are run in a DOS session under OS/2 there is
no inherent priority level distinction, and no way for a user to impose unique priority levels
externally to the programs.
Q. What's the minimum OS/2 version required for the CL57 color laptop?
A. OS/2 V2.0 is the minimum requirement for the CL57.
WPS/User Interface Qs & As
Q. I'm tired of always using the Sort option on a folder pulldown to arrange the icons the
way I want them. Is there any way to make the icons sort automatically?
A. Yes. Just Open the Settings for a folder, select the Sort notebook tab, and click on the
check-box called "Always maintain sort order." Then close the Settings. This will make the
change permanent for that folder, using whichever sort order you select. You can always
change the sort order later, and the "auto-sort" will stay in effect, using the new sort order.
Q. I went into the Desktop pulldown to change some settings, including "Minimize to
desktop", so that my icons don't disappear when I minimize them. But now only some objects
minimize to the desktop, while others still hide. What's wrong.
A. By using the Desktop settings you changed only the behavior of icons on the Desktop; not
icons contained in other folders. To make global changes to the way objects hide/minimize,
go to the OS/2 System folder, then the System Setup folder, then open the System icon.
From the Window notebook tab make the changes you want for all folders.
Q. Is there any way to disable the Print Screen function?
A. To enable or disable Print Screen, go to the OS/2 System folder, then the System Setup
folder, then open the System icon. From the Print Screen notebook tab make your choice.
Q. Why are the titles of some of my icons lighter in color than the others?
A. These icons represent "shadows" of the original object. The lighter text is a way of
distinguishing between originals and shadows.
Q. What are "Shadow" icons and why would I want them?
A. Each folder represents a directory on your disk. Each icon/object represents a file in that
directory. If you copy an object from a folder to the Desktop, for example, you are also
copying the file associated with that object. By creating a shadow of the original object you
can put "pointers" to the file in many different folders or on the Desktop (which is actually a
folder itself) for convenience, without also duplicating the file multiple times (and wasting a
lot of disk space). In addition, if you duplicate the file, each is a separate copy, and
updating one doesn't affect the others. By using shadows you can access the same copy of
the file from multiple places, insuring that you are always working with the same version of
the file.
Q. If I shred an object (icon), does that delete the data file or program that it represents?
A. No. Objects are independent of the physical disk files. There can be multiple objects
representing the same files. Therefore there must be a way to delete some of them without
also deleting the file they represent.
Q. Is there a difference between deleting a shadow object and the original?
A. Yes. If you delete a shadow, it does not affect other shadows of the original, or the
original object itself. However if you delete the original, all shadows are deleted with it.
Q. Am I limited to 11 character icon/object names on a FAT system?
A. No. Like HPFS partitions, FAT partitions will support up to 254 character object names
(however the physical file names on disk are still limited to 11 characters; that is a FAT
limitation, not a Workplace Shell limitation).
Q. I would like to get more icons side by side on my Desktop, but some of the icon names
are so long that I can only get a few icons on each line. What can I do?
A. You have two options 1) Rename the icons to something shorter (such as Windows Apps
#2, instead of Additional Windows Programs); or 2) Insert carriage returns (using the Enter
key) in the name to break the name into multiple short lines of text.
Q. How do I copy or move an object with the mouse?
A. To move, just press and hold the right mouse button over the object you wish to move,
while dragging and dropping it elsewhere. To copy, press and hold the Ctrl key while dragging
and dropping with the mouse.
Q. I have noticed that different people have the icons on their desktop arranged differently.
Some have them all over the screen, others have a single column down the left side of the
screen with the icon text to the right (and a scroll bar to see those of the screen), and still
others have multiple columns of icons. How do I select which way I want it?
A. Press the right mouse button on a blank part of the Desktop to bring up the Desktop
menu; then select Open, Settings. Finally, from the Settings screen select "Flowed" for
multiple columns, "Non-Flowed" for single-column, or "Non-grid" (the default) for left-to-right,
top-to-bottom arrangement all over the screen. Then close the Settings to save.
Q. What is a "work area"? I see that option in a number of Settings notebooks under the
File tab.
A. A work area is a special kind of folder. The Desktop is a work area. When a work area is
minimized or maximized, all active objects within that work area are also minimized or
maximized. When a work area is closed, all open objects are also closed. When a work area
is opened, all previously open objects are reopened (this is how the Desktop restarts your
apps when you boot the system). For more information, open the Settings to the File tab
and press the Help button, or search for "work area" in the Master Help Index object.
Q. I see objects across the bottom of my desktop that have "halos" or boxes around them.
What are they?
A. They are minimized objects. Depending on how the desktop is setup, objects can be
minimized on the desktop, minimized inside the Minimized Viewer folder (which can be opened
on the desktop to see the minimized icons), or Hidden. Hidden objects can be seen by
double-clicking on the original object. To specify which way you would like your objects to
appear, go to the Desktop settings (right mouse button, Open, Settings.), go to the Window
tab, and make your selection in the "Minimized Window Behavior" box. If you specify one of
the Minimized options, make sure to also change the "Button appearance for windows" box to
"Minimize button". If you leave it set to "Hide button" the icons will be hidden rather than
minimized.
Q. How do I start another copy of a program from an icon without having to duplicate the
object? When I click on the icon the already-running session pops up.
A. Go to the Desktop settings (right mouse button, Open, Settings.), go to the Window tab,
and specify "Create new window" in the "Object open behavior" box. Then close the Settings
to save the changes.
Q. Where is the Shutdown option? There is no Desktop Manager, as there was in OS/2 1.x.
A. Just press the right mouse button with the pointer over any blank part of the desktop.
This will bring up the Desktop menu.
Q. Where is the keyboard Lockup option? There is no Utilities Group, as there was in OS/2
1.x.
A. Just press the right mouse button with the pointer over any blank part of the desktop.
This will bring up the Desktop menu. From there select Lockup now to initiate it, or open the
Settings to the Lockup notebook tab to change the Lockup settings (note that there are
three pages of Lockup settings to be changed).
Q. Is there a "screen blanker" program in OS/2 2.0?
A. Yes; two in fact. One is the Lockup program, which allows you to specify a timeout value
after which to blank out the screen, and replace it with a bitmap image. The program also
prompts for a keyboard password to use when locking the keyboard. There is also an autodim
feature. There is no way to use this program as a screen blanker without the keyboard
password feature, though. The other program, Cat and Mouse, offers a "hide" button that
blanks the screen and displays only the icon of a cat running around the screen. This
feature does not require a keyboard password, but also doen't offer an auto-timeout feature
(unlike the Lockup program). Cat and Mouse must be manually started.
Q. Is there a way to printscreen the entire WPS desktop?
A. Yes. Simply use the left mouse button to click on an empty part of the desktop and then
use the Print Screen key. Or to print only one window on the desktop, select that window and
then use the Print Screen key.
Q. Does OS/2 2.0 require a mouse?
A. No, 2.0 is fully enabled for keyboard-only use; however most users will find the mouse
more convenient for many tasks.
Q. Is there any way to get to the Selective Install panel from a command prompt?
A. Yes. Just type INSTALL.
Q. I understand that OS/2 is supposed to be completely keyboard accessible, but I can't seem
to figure out how to select icons without a mouse.
A. Use the cursor (arrow) keys to move from icon to icon, then press the Enter key to select
the one you want.
Q. Is there an easy to change a DOS or Windows full-screen session into a windowed
session, or vice-versa?
A. Yes. Just use the Alt-Home key combination to toggle between full-screen and
windowed. This procedure does not work for OS/2 sessions; just DOS or Windows apps.
DOS/Windows Sessions (VDMs) Qs & As
Q. I understand that most DOS and Windows apps should run under OS/2, but what kinds of
programs are likely to fail?
A. 1) Those that could compromise the integrity of the operating system, such as VCPI
memory extenders and certain low-level disk utilities; 2) Those requiring extremely high
interrupt rates (typically more than 1,000 interrupts per second. 3) Those requiring a specific
version of DOS. OS/2 2.0 provides an emulation of DOS 5.0, but some applications may need
DOS 3.3, for example, and won't work with anything else. In this case, start a DOS image of
the DOS 3.3 diskette (within a VDM), and run the the application under real DOS 3.3 inside a
VDM.
Some other applications may require special DOS Settings, and some may run with limited
function. But overall, the large majority of programs will run "as is", and as faster or faster
than before, with greater data integrity.
Q. Are there any restrictions to what versions of DOS can be used in a Boot Image (Virtual
DOS Boot)?
A. Only that you must use a version of DOS that supports your hardware. (For example, you
can't use DOS 2.0 on a system with 1.44MB diskette drives, because DOS 2.0 doesn't
recognize anything larger than 360K diskette drives). Other than that, you are free to use
any operating system that will run on an 8086 processor (including IBM DOS, MS DOS, DR
DOS, and even CPM/86).
Q. Is DDE supported?
A. Yes; between any combination of Windows and OS/2 applications.
Q. Is OLE supported?
A. Yes; between Windows applications.
Q. I just tried to cut-and-paste between an OS/2 application and a Windows program, but the
Paste option in the Winapp's menu was "grayed-out". What do I have to do to cut/paste
between applications?
A. Either your Windows clipboard or your OS/2 clipboard, or both, were set to "private". Both
must be set to Public before you can do any cutting and pasting back and forth. When you
start the full-screen Windows session, or a Windows app, there will be a clipboard icon
opened on the Windows Desktop. If you start a Windows or OS/2 app in a window, the
clipboard icon will appear on the OS/2 desktop. From within both the Windows and OS/2
clipboard icons, there is an Option choice on the action bar. Clicking on this will show
whether the clipboard is Public (indicated by a check-mark) or not. If not, click on the line
that says Public clipboard. This will change the clipboard to public. After you have ensured
that both clipboards are public, you should have no trouble cutting and pasting between
applications. If you still can't paste, close the program you can't paste into, and restart it. It
should work now.
Q. I know that OS/2 2.0 comes with Adobe Type Manager for OS/2, but will I have to buy
ATM for Windows for my Windows apps?
A. No. OS/2 2.0 supplies ATM for both OS/2 and Windows applications.
Q. When I "migrate" DOS and Windows apps to OS/2 to "register" them with the OS/2
Workplace Shell, how do I know what DOS Settings to use for each application.
A. In most cases the default settings will work, but in some cases tuning may be required or
desirable. OS/2 2.0 ships with a database of settings for more than 225 of the most popular
DOS and Windows applications. These are automatically applied when you migrate these
applications. Settings for other applications will be added with future versions and Corrective
Service (patch) Diskettes.
Q. I have a DOS application that requires Alt-ESC (or Ctrl-Esc) to switch between screens.
But OS/2 reserves those key combinations for switching between sessions. Is there any way
to free up one or both of these combinations for DOS apps?
A. Yes. From a Virtual DOS Machine (VDM) that will be running such a DOS app simply go
into the DOS Settings (right mouse button from the application icon, then select Settings, O
pen; then Session DOS Settings) and find the setting called KYBD_CTRL_BYPASS. Select this
and from the selection box in the upper right-hand corner choose either ALT_ESC or
CTRL_ESC. Finally, press the Save pushbutton and close the Settings.
Q. Can I use my favorite DOS memory manager in a VDM (DOS session)?
A. No, but there is no need for one, since each VDM already includes EMS, XMS, and DPMI
memory managers.
Q. Can I use my favorite DOS memory manager from inside a bootable DOS image?
A. Even inside a bootable DOS image (actually named a Virtual DOS Boot, or VDB) the
answer is the same, since the OS/2 memory managers are still available inside a VDM running
a VDB image.
Q. Can I use my favorite DOS/Windows disk caching utility in a VDM (DOS session)?
A. No, but there is no need for one, since each all applications, DOS, Windows, and OS/2 are
automatically cached by OS/2.
Q. What EMS (Expanded Memory Specification) level is provided in a VDM?
A. EMS V4.0, the same as DOS 4.0/5.0 provide.
Q. Does using multiple Virtual DOS Machines for several different DOS programs simplify the
complicated process of finding available address space between 640K and 1MB for Expanded
memory (EMS) and certain kinds of adapters?
A. Yes, since network adapters, SCSI controllers, and most other device addresses are
actually loaded in the address space above 1MB, there should be few conflicts with EMS
memory drivers.
Q. Are DOS TSRs supported in VDMs?
A. Yes. Even though they have never been officially supported in true DOS (due to a lack of
any standard TSR specification, and the likelihood of system lockups when using multiple TSRs
concurrently) they will be supported under 2.0. Because TSRs are loaded into a VDMs Upper
Memory Blocks (UMBs), they run in Protected mode and are prevented from touching other
VDMs or OS/2 sessions. There is no opportunity for a TSR to crash the entire system. The
worst it can do is lock up its own sessions, which can then be terminated from the OS/2
desktop. No rebooting of the system (with possible loss of data) is necessary.
Q. Can EMS/XMS/DPMI drivers be loaded globally for all VDMs, or must I set them separately
in each VDM?
A. Either. Global settings are done from CONFIG.SYS using device drivers. In addition,
individual VDMs can enable or disable this support from the DOS Settings. For driver details,
refer to the OS/2 Command Reference.
Q. When EMS memory is enabled in CONFIG.SYS, what is the default memory allocation?
A. 4MB, but up to 32MB may be specified, per VDM, if needed.
Q. Will all EMS-compatible DOS and Windows programs work in a VDM?
A. It depends on the application. All DOS apps that use the EMS 4.0 driver provided with
DOS 4.0 and higher, including all Windows apps, will work. Older applications that directly
invoked EMS memory (without using an external DOS driver) may not work.
Q. Are there any suggestions for the order in which to load EMS and XMS drivers?
A. For the best performance, load the EMS driver (VEMM.SYS) first, then all drivers that use
expanded memory; then load the XMS driver next, followed by all drivers that use XMS.
Lastly, load all drivers that use UMBs.
Q. If an application supports more than one choice of EMX/XMS/DPMI memory, is there any
preference?
A. For performance reasons, choose XMS or DPMI over EMS. On the other hand, EMS and
DPMI support more total RAM than XMS (32MB, 512MB, and 16MB, respectively).
Q. Does the XMS (Extended Memory Specification) driver support the use of the High Memory
Area (HMA)?
A. Yes. The HMA (the 64K immediately above 1MB) is supported for Upper Memory Block
(UMB) usage. To enable the HMA for UMB use specify DOS=HIGH in CONFIG.SYS.
Q. Are there any limitations to High Memory Area (HMA) use?
A. Yes. If multiple device drivers access HMA, make sure the XMS driver is loaded last, to
avoid conflicts.
Printing/Printer Driver Qs & As
Q. What printers are supported by OS/2 2.0?
A. For a complete list of the nearly 200 printers supported, see the tip entitled
Printers/Plotters Supported by OS/2 2.0 in the OS/2 2.x Tips section of the IBM PS/2 Technical
Assistant.
Q. How do I install downloadable (soft) fonts for my printer?
A. First, find the printer object (icon) you wish to install the fonts for. Next, use the right
mouse button to bring up the menu. From there select Open, Settings, Printer driver. Then
select the driver you wish to install the fonts to, and use the right mouse button to bring up
the menu. Again select Open and Settings. At the bottom of the Printer Properties dialog
box press the Fonts button. Finally, specify the drive letter and path where the fonts can be
found and press the Open button. You will see a list of the soft fonts you can select.
Single-click on each one you want to add. When you have highlighted all you intend to add,
press the Add button. The highlighted fonts will disappear from the "New Soft Fonts" window
on the left and appear in the "Installed Fonts" window on the right. When they have all been
installed, press the OK button to end and save your work. Then press OK on the Printer
Properties dialog to return to the Settings book. From there close the settings and you are
done.
Q. Is there an OS/2 driver for the IBM 4216-020?
A. Not from IBM; OS/2 only includes drivers for the 4216-030 and -031 models. There is a
company, called David Goodenough & Associates, Limited that developed an OS/2 1.1/1.2
driver for the model 20. It is possible that they also offer 1.3 and/or 2.0 versions of the
driver. For more information, contact the vendor at:
David Goodenough & Associates, Ltd.
283 City Road
London, ECIV 1LA
United Kingdom
Phone: 44-71-490-2266
Fax: 44-71-490-2343
Note: This is not an endorsement of the product, nor a recommendation by IBM; simply
information for your benefit.
Q. If I have Windows drivers for printers not supported by OS/2, is there any way to use
them?
A. Yes. They can be installed through the Windows desktop, and made available to all
Windows applications, however OS/2 programs will not be able to use them.
Q. Is there any way to print to a disk file, instead of printing?
A. Yes. From the printer icon, press mouse button 2 (usually the right button), then
Open...Settings, then press the Output notebook tab. From the Output panel click on the
Output to file checkbox, then close the Settings. Now when you send a print job to the
printer, you will be prompted for a disk file name to print to.
Other OS/2 Device Driver Qs & As
Q. In the README file that comes with OS/2 (in the root directory, viewable in the
Information folder), there is reference to a SCSI driver called OS2SCSI.SYS, supposedly in \OS2,
yet I can't find it. Where is it?
A. This is a typo in the README file. The name is actually OS2SCSI.DMD, not .SYS.
Q. Is Super VGA (SVGA) supported by OS/2 2.0?
A. Yes, to some extent. The following Super VGA boards have been tested and found to
work with OS/2 2.0 for DOS applications (only) that make use of SVGA modes:
o Orchid ProDesigner IIs by Orchid Technology (ISA and MCA versions)
o Trident TVGA by Trident Microsystems, Inc. (8900b and c levels)
o STB PowerGraph VGA by STB Systems, Inc.
o Video Seven VRAM II, by Video Seven
o Boca Super VGA by Boca Research Inc.
o VGA Wonder XL Series by ATI Technologies, Inc.
o 8514 Ultra by ATI (Must be installed as an 8514 and as a primary display;
it will default to high-resolution mode. Do not install it as VGA.)
Additional SVGA support, as well as SVGA drivers for Windows and OS/2 applications will be
shipping in a free update later this summer. For more information about SVGA support in
OS/2 2.0, refer to the README file in the Information folder.
HPFS/FAT Qs & As
Q. What is the maximum partition size supported by 2.0?
A. The maximum is 64GB (raised from 2GB in 1.3), but a practical usable size is 5-7GB per
partition.
Q. What enhancements have been made to FAT partitions for 2.0?
A. Better performance, partly due to adding Lazy Write support, and Autocheck support; both
previously available only with HPFS.
Q. I have heard rumors that due to the performance enhancements made to "super FAT" in
2.0 it is now faster than HPFS. Is this true?
A. At one point during beta testing the enhanced FAT support was improved to the point that
it was faster than the early HPFS code; but subsequent tuning of HPFS turned this back
around. In nearly all instances, HPFS is faster, has better data integrity, and uses less disk
space than FAT.
Q. In what cases would FAT be better than HPFS?
A. If you have the minimum 60MB hard drive, there may be no performance advantage to
HPFS (unless there are more than about 100-200 files in some directories), access on an
HPFS drive would be faster than FAT.), and the savings in disk space produced (allocation
unit) size used by HPFS would be offset by the 300K disk overhead for an HPFS partition.
But HPFS would still have the edge in data integrity, due to Hot Fixes. In all cases of
>60MB partitions, HPFS has the performance edge.
Q. What was that about cluster size?
A. In a FAT partition, to get around a hard limitation of the number of clusters (now called
allocation units) available that produced the infamous "32MB limit", the cluster size doubles
every time the partition size doubles (64MB partition=4K cluster; 128MB=8K; 256MB=16K;
512MB=32K; 1GB=64K; 2GB=128K). And since a 5 byte batch file takes a minimum of 1
allocation unit, and since on average each file wastes half of an allocation unit, large FAT
partitions waste a lot of space. Because HPFS partitions always use 512 byte (1 sector)
allocation units, it wastes far less space, especially on large partitions, than FAT. Cases
have been reported where a user reformatted a 1GB drive from FAT to HPFS, restoring all the
same files as before, and "recovered" 100MB of previously wasted disk space. (Obviously,
the amount of wasted space depends on how many small files are on the drive).
Q. What is a "Hot Fix"?
A. Hot Fixes are a mechanism whereby HPFS works around bad sectors on the disk and
temporarily uses "spare blocks" of disk space to store the data that would normally have
been written to the bad sector. Then when the system is rebooted, AUTOCHECK runs
CHKDSK, marks the defective sector as bad, copies the spare block to a good sector, and
makes the spare block available for reuse. In a FAT partition, on the other hand, the data
would have been written to the bad sector, and the user would not have known until the next
time he tried to access the data and received an error. The corrupted data would have been
lost, at the least, and in the case of an indexed file all data after the bad sector may have
been lost. If a binary file, such as a word processing document, spreadsheet, or other, it is
possible that the entire file would have been rendered unusable. This is the big data integrity
aspect of HPFS. (By the way, when a Hot Fix is applied OS/2 presents an informational
message to that effect, letting you know what has occurred.)
Q. Under DOS, directory file names appear on the left side of the directory listing. But I
installed OS/2 and now the names are on the right side? Why?
A. File names in DOS and OS/2 FAT partitions are limited to 11 characters (XXXXXXXX.XXX).
Because filenames in an HPFS partition can be up to 254 characters long, putting the names
on the right side of the DIR list allows the filenames to wrap to the next line (or more than
one line) as necessary without disrupting the orderly columns of file size, date, and other
information.
Q. When I do a DIR of an HPFS partiton there is a column of numbers immediately to the left
of the file and directory names that doesn't appear on a FAT partition directory listing. What
is this information?
A. It is the number of bytes of extended attributes associated with those files and
directories.
Q. Is there any way to format a diskette or optical disk drive to HPFS?
A. Only FAT formats are supported for removable media in OS/2 1.0-2.0.
Productivity Apps/Games Qs & As
Q. Are any of these so-called "productivity" applications really useful, or are they just "toys"
to give us a chance to "play" with OS/2 before buying useful software.
A. Certainly it depends on your definition of "useful," but many of the Productivity apps are
adequate for the needs of many users, without additional software. The PM Term async
communications program, Enhanced Editor, PM Chart, calculator, notepad, Sticky Pad, alarm
clock, calendar, to do list, Seek and Scan file browser, and others can all be used
productively.
Miscellaneous OS/2 2.x Qs & As
Q. How does the "free 60 day OS/2 support" work?
A. Users experiencing difficulty installing or using OS/2 2.0 may call the IBM Defect Support
Center at 800-237-5511. From the time of the first call the user gets 60 days of unlimited
free technical and service support through this number. After 60 days, if the user wishes to
cintinue the service they may subscribe for $129 per year.
Q. How does this differ from SystemXtra?
A. SystemXtra is IBM's premier level of support for Personal System products, including OS/2.
For more information about SystemXtra, call 800-IBM-XTRA.
Q. Can you explain how the "OS/2 BBS" works?
A. That can mean either of two different services. 1) There is an official BBS, accessed
through an 800#, offered on a subscription basis for a fee, and only available to subscribers.
For more information about this BBS and what it offers, call 800-547-1283; or 2) The IBM
NSC BBS, which is open to the public, for free but as a long-distance call for those outside
the local dialing area. It contains a number of "conferences" for the discussion of such
products as OS/2, DOS, PS/2s and Networking. There is a large variety of downloadable
software and software patches available. In addition there are online bulletins and databases
of OS/2 software, non-IBM adapters for Micro Channel systems, and local PC User Groups.
The number call for the IBM NSC BBS is 404-835-6600 (N,8,1). Registration is done on the
fly for new users.
Q. Q. How many COM ports does OS/2 2.0 support?
A. COM1-COM4 are supported on Micro Channel systems, and COM1-COM2 are supported on
AT bus (ISA) computers.
Q. I understand why I would want to limit the available drive letters on a LAN, using
LASTDRIVE= in CONFIG.SYS, but is there any reason to do so in a standalone environment?
A. Yes. Each drive letter that is available for use reserves about 100 bytes of memory. So
limiting the drive letters to E:, for example, frees up about 2K of RAM for other use.
Q. What versions of OS/2 support Extended Services 1.0?
A. OS/2 1.30.1 (CSD level 5015 or later), and OS/2 2.0.
Q. Does the OS/2 2.0 Developer's Toolkit include a kernel debugger and a PM application
debugger?
A. Yes. Unlike the OS/2 1.3 toolkit which only includes a source code debugger (CodeView),
the 2.0 toolkit includes all three.
Q. Does the SWAPPER.DAT file ever shrink in OS/2 2.0?
A. Yes. Unlike OS/2 1.3, where SWAPPER.DAT was always as large as the largest block of
data swapped to disk during the day (then reset to 512K at bootup), 2.0 expands and shrinks
SWAPPER.DAT as needed, in 512K increments.
Q. Does OS/2 2.0 offer an UNDELETE command, like DOS 5.0?
A. Yes. All deleted files are temporarily stored in a \DELETE directory in each partition.
These files are purged upon bootup, so files must be undeleted before shutting down the
system. Note: During installation the statement SET DELDIR=... that defines the directory to
hold the deleted files is installed in CONFIG.SYS but disabled (to save disk space). To
activate UNDELETE, you must remove the "REM " from the statement: REM SET DELDIR=....
Q. What is a "thunk" or "thunking layer?"
A. It is the code that allows 16-bit applications to run correctly in a 32-bit address space.
ES/2 Comm Manager Qs & As
Q. Has anything been done to improve LAN support?
A. Yes. Adoption of the new LAN Adapter and Protocol Support (LAPS) provides more
efficient processing of the IEEE 802.2 and NETBIOS protocols with increased performance in
both cases across tsupported LANS.
Q. How many simultaneous workstations are supported through the Comm Manager SNA
Gateway?
A. 254 attached via either single or multiple adapters. (Successful operation in a given
environment may depend on other factors, such as application load and/or line speed, so the
ability to exploit a full complement of 254 workstations should not be assumed for all cases.)
Q. What is the maximumnumber of LU sessions per gateway?
A. 254, the same as EE 1.3.
ES/2 Database Manager Qs & As
Q. Does an ES Database Server support the use of EE 1.x clients?
A. Yes. EE 1.2 or 1.3 SQLLOO and APPC clients may access shared databases on a LAN, or
host (via DDCS/2).
Q. What is the maximum number of configurable applications under ES Database Server?
A. 252, however successful operation in a given environment may depend on other factors,
such as application load and/or available memory, so the ability to exploit a full complement
of 252 applications should not be assumed for all cases.
LAN Server 2.0 Qs & As
Q. Have there been any performance enhancements made to LAN Server 2.0?
A. Yes. LS 2.0 is significantly faster than LS 1.3 for a number of reasons. The Entry
package includes a much improved LAN transport, at a lower price than 1.3. In addition to
faster LAN transport, the Advanced package includes HPFS386 (32-bit). As a result, the
Advanced package is 2-5 times faster than LS 1.30.1 for server functions, and 1.1 to 2.5
times faster for requester activity. The superior performance of the Advanced package is
particularly evident in heavy workload environments, such as the remote IPL of OS/2
Requesters.
Q. Does LAN Server 2.0 support the IBM Token-Ring 16/4 Busmaster Server Adapter/A, unlike
LAN Server 1.x?
A. Yes.
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