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Additional information
This section of the Release Notes describes features of DR DOS 6.0
that are not explained elsewhere in the DR DOS 6.0 documentation.
Microsoft Windows 3.1
DR DOS 6.0 is fully compatible with Microsoft Windows 3.1.
The Windows 3.1 default drive for temporary swap files is the drive
on which Windows was installed. If Windows is installed on a
SuperStor drive it is recommended that users change the default
drive for swap files to an uncompressed drive. This should be done
for both temporary and permanent swap files. Use the 386
Enhanced option from Control Panel to change swap files.
If Super PC-Kwik is already loaded when you install Windows 3.1,
you are informed by the Windows SETUP program that SUPERPCK.EXE
is running and you are warned that your system may fail; ignore
this message and continue with the Windows installation procedure.
Windows 3.1 makes changes to autoexec.bat and config.sys on
installation. It is recommended that you make a backup of these
files.
By default, Windows installs the SMARTDrive disk cache program
and the HIMEM.SYS memory manager. However, the DR DOS 6.0 disk
cache, Super PC-Kwik, and the DR DOS 6.0 MemoryMAX drivers provide
superior functionality over the Windows 3.1 SMARTDrive disk cache
and HIMEM.SYS. To use Super PC-Kwik and the DR DOS MemoryMAX
drivers, instead of SMARTDrive and HIMEM.SYS, you simply remove one
line from your autoexec.bat and config.sys files. Edit autoexec.bat
to remove the line
C:\WINDOWS\SMARTDRV.EXE
and edit config.sys to remove the line
DEVICE=C:\WINDOWS\HIMEM.SYS
The above lines should be removed after Windows 3.1 has been
installed but prior to rebooting.
If you are using the DR DOS 6.0 EMM386.SYS MemoryMAX driver, Windows
may also replace the EMM386.SYS line in your config.sys file with
the Windows EMM386.EXE line. As a result of this change, your system
may generate an error message when rebooting. The EMM386 line should
be changed back to its original form after installing Windows 3.1 for
your system to boot properly. Refer to the backup of your config.sys
to be sure that you have the correct syntax.
The Windows 3.1 installation will also insert a STACKS command
into the CONFIG.SYS. Even though DR DOS does not use a STACKS
command the line can be left in CONFIG.SYS. No error will
result.
DR DOS 6.0 is compatible with both the SMARTDrive disk cache and
with HIMEM.SYS. If you want to continue using these drivers, you
must run the DR DOS SETUP program, and remove MemoryMAX and Super
PC-Kwik. However, if you do use SMARTDrive instead of Super PC-Kwik,
do not use the SMARTDrive + option to enable caching on a SuperStor
compressed drive. Unexpected errors may result when this option is
used.
EMM386.SYS supports upper memory for Windows 3.1 running in Standard
or Enhanced mode. You no longer need to use the /WINSTD option on the
EMM386.SYS command line to run Windows 3.1 in Standard mode.
NOTE: Machines that have LPT1 ports and are using NE2000 network
cards configured for I/O address 360 have occasionally hung or had
trouble running DOS applications under Windows 3.1. If this is
encountered, try setting the NE2000 for a lower I/O address.
Installation
System security Master password
Note that it is very important to keep your Master Key
password secret, and in a safe place. Once you have chosen
the secure system option and specified a Master password,
you will not be able to reinstall DR DOS, or disable the
security, without the correct password.
System security and UNINSTAL
Once you have chosen the secure system option, you cannot
use the UNINSTAL command to "uninstall" DR DOS and restore
your old operating system until security is disabled.
Compressed drives
Before creating any SuperStor compressed drives, read
section 13.3 of the DR DOS 6.0 User Guide. This section
gives important information about the impact of (and
procedure for) creating a compressed partition.
It is strongly recommended that you backup all your data
before converting a drive to a SuperStor compressed drive.
If you decide to remove the drive later, all the data
contained on it will be deleted.
If you are using another operating system, be sure to
check that it supports compressed drives, before
creating SuperStor drives; earlier versions of DR DOS (and
DR MDOS 5.0), for example, do not.
DISKOPT is a DR DOS 6.0 disk optimization utility which is
recommended for optimization of a SuperStor drive. DISKOPT is able
to properly analyze the internal allocation tables of a SuperStor
drive by letting the SuperStor driver act as interpreter to the
drive.
Third party disk utilities may not be able to properly define the
internal structure of a SuperStor drive. These utilities are NOT
recommended as their effect on a DR DOS 6.0 SuperStor compressed
drive are indeterminable.
Copy protected software or position dependent software should be
removed before using SuperStor. Copy protected software may be
reinstalled after the drive has been compressed with SuperStor.
If DELWATCH is being used DELPURGE should be run to remove pending
delete files from a drive before using SuperStor.
Multi-boot utilities
"Multi-boot" utilities, such as OS/2 DualBoot, typically
depend on re-writing the boot sector after DOS is
installed. If you install DR DOS on top of a system
using a multi-boot utility, the multi-boot may not
work properly after installation; remove the multi-boot
utility, install DR DOS, and then reinstall the
multi-boot utility.
Troubleshooting
Using AutoCAD R11
Before running AutoCAD R11, ensure that Ctrl+Break
checking is OFF. You can display current Ctrl+Break status
with the BREAK command, and disable it by typing BREAK OFF.
You can also disable it by changing the BREAK entry in
config.sys using the SETUP command.
Using disk maintenance programs
Although DR DOS can create and read hard disk partitions of
up to 2 Gbytes, some older versions of disk maintenance
programs (for example, Norton Utilities or PCTOOLS) only
support disk partitions up to 32 Mbytes. When run on larger
partitions, they will display a "Drive Not Ready" error message.
Contact your software supplier for a more recent version of
the disk maintenance program.
Using Microsoft Windows 3.0 in Real mode
Note that before you load Windows in Real mode, you should
ensure that upper memory (and additional memory created by
the /VIDEO option of EMM386.SYS or HIDOS.SYS) are disabled.
Upper and Video memory are disabled by default, but you can
also use the following MEMMAX command if necessary:
MEMMAX -U -V
Troubleshooting information
Refer to the following sections of the DR DOS 6.0 User
Guide for "troubleshooting" information: Chapter 12, "Using
MemoryMAX", Chapter 13, "Optimizing your disk", and
Appendix A, "Error messages and troubleshooting". You can
also find the same information in DOSBook.
Utilities
DISKOPT and UNDELETE
Note that after you use DISKOPT to optimize your disk, you
can only recover files saved by DELWATCH with UNDELETE.
SCRIPT
The SCRIPT utility will now load as a TSR on LPT1.
FDISK
The FDISK utility, to partition a hard disk, now has two
additional options:
1. Select the "Re-write master boot record" option if
the SETUP program cannot install system security
because of an incompatible existing "master boot
record". FDISK saves a copy of the existing record
in a file called c:\oldmbr.bin and writes the standard
DR DOS master boot record in its place.
2. Select the "Restore original master boot record"
option to restore the original record from
c:\oldmbr.bin.
For a full description of the FDISK utility, refer to the
DR DOS 6.0 User Guide.
DELWATCH
Some third-party memory managers may incorrectly report the
amount of free disk space if they read the FAT directly;
this is because pending delete files saved when DELWATCH is
active are not marked as "free" until the space is actually
required or you delete them using DELPURGE.
LOCK and Microsoft Windows
You can use the DR DOS LOCK program, to temporarily lock your
system, when you are running Microsoft Windows.
To install LOCK under Windows, do the following:
1. Load Windows and select the program group in which
you want LOCK to appear (the ACCESSORIES group, for
example).
2. Open the Program Manager File menu and select the
"New" option. Then select "Program Item" in the
dialogue box and press OK.
3. Enter "DRI Lock" in the "Description" field of the
next dialogue box and "LOCK.EXE" in the "Command Line"
field. Then press OK.
4. The LOCK icon, a red padlock, now appears in the
program group you selected.
To use LOCK under Windows, do the following:
1. Click twice on the LOCK icon to run LOCK. Press the
"Lock system" button to lock the system.
If your system is secure (that is, you have installed system
security), your computer locks immediately. Enter your existing
User or Master password to unlock it.
If your system is not secure, you are prompted for a password
to lock it.
Note that if you want to hide the contents of your screen, select
the "Hide Screen" option. The screen is restored when you enter
the correct password.
Super PC-Kwik and Protected Mode Applications
If you get an "out of memory" error from protected-mode
applications such as Lotus 1-2-3 R3.1 or AutoCAD R11
(which use DOS extender technology), make sure that Super
PC-Kwik is configured with enough reserved memory in SETUP
or use the /R:nnnn switch with the SUPERPCK command.
SuperStor
You can force the entire SuperStor driver, SSTORDRV.SYS, to
load into conventional memory by using the /NOHI option in the
DEVICE statement.
DEVICE = c:\sstordrv.sys /NOHI
This option is primarily of value when you want to manipulate
memory configurations for diagnostic purposes.
CHKDSK and third party utilities will NOT normally portray the
proper amount of available space on a SuperStor drive. This is
because CHKDSK and most third party utilities base their free
amounts on a perfect 2:1 compression ratio. However, free space on a
SuperStor drive will actually vary due to the differing compression
ratios of the files stored on a SuperStor drive.
DIR, XDIR and SSTOR.EXE's statistics option may be used to properly
determine the current SuperStor free space. All three of these
options have adjustments built into them to account for the
differing compression ratios of the files stored on a SuperStor
drive.
MemoryMAX (HIDOS.SYS with LIM EMS)
HIDOS.SYS can now provide upper memory for any machine
equipped with an Expanded Memory Specification (EMS) memory
board together with its Expanded Memory Manager (EMM)
device driver software. Note that expanded memory hardware
is required; software that provides expanded memory using
extended memory or disk storage will not work properly.
HIDOS.SYS can use expanded memory in two ways:
1. If your expanded memory hardware/software provides
mappable upper memory outside the page frame, then
HIDOS.SYS will automatically detect and use this
memory and no special HIDOS.SYS command line
options are required (there is in fact a command
line option (/CHIPSET=EMSUMB) which tells HIDOS.SYS
to use mappable upper memory outside the page
frame). Mappable upper memory outside the page
frame requires suitable hardware together with
EMS 4.0 or Enhanced EMS (EEMS) software.
2. If your expanded memory hardware/software does not
provide mappable upper memory outside the page
frame, or if you do not want to use expanded memory
for anything other than providing upper memory,
then you can instruct HIDOS.SYS to use all mappable
upper memory including the page frame. Since
HIDOS.SYS will not do this by default, you need to
specify /CHIPSET=EMSALL on the HIDOS.SYS command
line. If this option is used, HIDOS.SYS will
prevent any other programs from using expanded
memory.
To let HIDOS.SYS use expanded memory, you must load your
Expanded Memory Manager software before loading HIDOS.SYS,
so the DEVICE= line in config.sys for the Expanded Memory
Manager must be included before the DEVICE=HIDOS.SYS line.
For example, to use mappable upper memory excluding the
page frame using an AST RAMpage board using AST's REMM.SYS
Expanded Memory Manager, put the following in your
config.sys:
DEVICE=REMM.SYS
DEVICE=HIDOS.SYS
To use all mappable upper memory including the page
frame:
DEVICE=REMM.SYS
DEVICE=HIDOS.SYS /CHIPSET=EMSALL
If you wish to use the /VIDEO option of HIDOS.SYS so that
conventional memory can be extended into video memory space,
then you may need to tell your Expanded Memory Manager to
provide mappable upper memory in this area. Some Expanded
Memory Managers will provide this automatically, but some
will not. Consult the documentation for your expanded
memory manager software as required. For example, to use
video memory space using HIDOS.SYS with later versions of
AST's REMM.SYS Expanded Memory Manager, put the following
in your config.sys:
DEVICE=REMM.SYS /L=A000-B7FF
DEVICE=HIDOS.SYS /VIDEO
If you do not want HIDOS.SYS to use EMS at all, then either:
Load HIDOS.SYS before the Expanded Memory Manager.
or
Use the HIDOS.SYS /CHIPSET=NONE command line option.
TaskMAX
When TaskMAX is unable to switch tasks, it waits for a few
seconds and then sounds a "beep".
TaskMAX is unable to switch for one of the following
reasons:
There is not enough available swap space.
Exit your current task or delete some
unwanted files on the disk.
You are running an application that changes
hardware configuration.
Exit the application.
You are using Ctrl+P or the COPY command to copy
files to the printer.
Wait for printing to finish if the printer
buffer is full, or turn the printer online,
if it is not ready.
You are running an application that talks directly
to Net BIOS.
Exit the application.
Mouse drivers
All applications should be configured to use
the Microsoft compatible mouse driver interface
as supplied with your mouse (mouse.sys or mouse.com,
for example). Ensure that the mouse driver is loaded
in config.sys or before TaskMAX in autoexec.bat.
TASKMAX /F option
For fastest performance, TaskMAX is configured so
that user-defined fonts and code page information
are not retained when you switch tasks.
Applications that require this function for proper
screen display may produce garbled results on the
screen after task switching; should this occur, you
can use the /F switch with TASKMAX to save the
fonts when switching. Note that using /F slows down
switching speed, and causes a slight flashing (on
some screens) during task switching.
TASKMAX /M option
Use the /M option when you load TaskMAX to select a
specific task using the numeric keys on the main
keyboard. This option supports keyboards that do not
have separate numeric keypads.
You can also edit the taskmax.ini file to
automatically enable the /M option by default. In
taskmax.ini, add the following under the subsection
"[keys]":
MainNumKeys=1 # 0=use numeric keypad, 1=use main
TASKMAX /V option
Use the /V option if any errors occur when
switching between tasks on a VGA compatible display.
The /V option forces the VGA to be accessed in the
same way as an EGA display adaptor.
Free swap space
Use the "About TaskMAX..." option on the TaskMAX
menu to check the amount of free space available.
Refer to the TaskMAX documentation in Chapter 6 of
the DR DOS 6.0 User Guide.
Using communications programs
Before you use TaskMAX with any communication
program, configure both the modem and the
communications program to ignore the status of the
DTR line; this line would otherwise force the modem
to break the current telephone connection when the
communications program switches out.
Using disk editors
You CANNOT run applications that access the disk
directly (disk editors) under TaskMAX when other
tasks are loaded. You will get errors when the
disk editor/application tries to write to the
disk, if you attempt to do so.
ViewMAX
When ViewMAX is configured to use an EGA or VGA display,
it automatically determines the current display type,
either Monochrome or Color, EGA, or VGA. If, for any reason,
a different display mode is required, ViewMAX can be forced
to work with a specified display type by editing the
VIDPATCH keyword in viewmax.ini (using the DR DOS EDITOR)
with the following contents:
VIDPATCH = nn
where nn is replaced by a digit between 00 and 03.
00 Monochrome EGA Display
01 Color EGA Display
02 Monochrome VGA Display
03 Color VGA Display
You can make additional memory available for ViewMAX by
disabling the clock and calculator accessory. To do this
rename viewmax.acc to (for example) viewmax.ack. ViewMAX
will then not attempt to load the accessory. Refer to the
RENAME command description in the DR DOS 6.0 User Guide.
Amended information
This section of the Release Notes describes features of
DR DOS 6.0 that are described incorrectly in the
DR DOS 6.0 User Guide.
COPY command
When you specify the /A or /B switch before the first
wildspec or filespec in the COPY command line, all files
specified in the command line are treated as ASCII text
(in the case of /A) or binary (in the case of /B).
DELPURGE command
The default for DELPURGE is to prompt before removing
pending delete files; specify the /A switch to remove
files without prompting.
The /S switch includes files in subdirectories below the
specified subdirectories, but if you also include /L, the
files in subdirectories are only listed (not removed). For
example:
DELPURGE /SL
MEM command
The following switches are also available with the MEM
command:
/F Displays memory blocks in segment FFFF
(high memory).
/U Displays memory blocks in upper memory.
SuperStor error messages
You may get the following error messages when using the
SuperStor program, but they are not included in the
DR DOS 6.0 User Guide.
Boot files not found while compressing a bootable drive
Origin SSTOR
Explanation SSTOR was unable to locate the operating
system files. Use SYS to copy the system
files to your C: drive.
Cannot create empty bootable partition
Origin SSTOR
Explanation The C: drive cannot be converted to a
compressed partition if there is not an
operating system installed.
Cannot remove current default drive
Origin SSTOR
Explanation The current default drive cannot be
removed; switch to another drive and run
SSTOR again.
Cannot run with Windows or another active task switcher
Cannot run while TASKMAX has other sessions active
Origin SSTOR
Explanation SSTOR may not be executed while Windows,
TaskMAX or another multitasking system is
loaded.
CONFIG.SYS file not found
Origin SSTOR
Explanation SSTOR requires that there is a config.sys
file on a bootable drive. If you do not
have a config.sys file, create an empty
one using the EDITOR.
Disk structure errors encountered
Run CHKDSK to correct
Origin SSTOR
Explanation Errors have been encountered in the file
allocation table on the host drive. Use
CHKDSK to correct the errors, and run
SSTOR again.
Error initializing FAT buffer
Error initializing Dir buffer
Origin SSTOR
Explanation The SSTOR program encountered an error
while building the memory based copies of
the file allocation table or the root
directory structure. This is most likely
caused by insufficient memory.
Error reading drive parameters IOCTL error
Origin SSTOR
Explanation SSTOR cannot get the parameters for the
specified drive, or error on host drive.
Use CHKDSK to verify the integrity of the
drive.
Insufficient free disk space to continue
Origin SSTOR
Explanation When compressing a drive which already
contains files, there must be approximately
1.5 Mbytes of free space on the drive for
a temporary file.
Memory allocation error
Origin SSTOR
Explanation Insufficient memory to run the SSTOR
program.
No non-compressed partitions available
Origin SSTOR
Explanation There are no drives which could be
compressed, which are not already
compressed.
No SuperStor disks present
Origin SSTOR
Explanation No compressed drives are currently
available.
Specified disk size too large
Origin SSTOR
Explanation SSTOR cannot create a compressed drive
larger than 512 Mbytes (a physical drive
of 256 Mbytes).
SuperStor driver not found
SuperStor device open error
Origin SSTOR
Explanation The SuperStor driver is not loaded, or is
not responding. The driver is required by
the SSTOR program to convert drives which
already contain files.
System area initialization error
Origin SSTOR
Explanation An error has been encountered while
writing the system area of the compressed
drive to the file.
Drive structure error - mounting read only
Origin SSTORDRV.SYS
Explanation An error has been detected in the internal
SuperStor tables. You will not be able to
write to the drive until this error has
been corrected. Use CHDKSK to rectify the
fault.
Host file structure error, not mounted
Origin SSTORDRV.SYS
Explanation The host file has an allocation or other
error which stops the driver from loading
correctly. Use CHKDSK to verify the
integrity of the host file.
Incompatible DOS version
Origin SSTORDRV.SYS
Explanation The SuperStor driver cannot be used with
the version of DR DOS or DR MDOS which you
are running.
Invalid fragment maximum. Space for 128 reserved
Origin SSTORDRV.SYS
Explanation The host file contains too many
non-contiguous blocks. The maximum number
of allowable fragments is 128. To correct the
problem, enter the following sequence of
commands (where "x" is the drive):
ATTRIB -HS x:\SSPARTSS.*
DISKOPT x:
ATTRIB +hs x:\SSPARTSS.*
Then reboot your system.