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Examples of Hard Drive mapping (CP) 3/15/94
OS2MAPDR.FAX HARD DRIVE MAPPING
EXAMPLES OF HARD DRIVE MAPPING - ONE HARD DISK;
ADDING A SECOND HARD DISK; OR MAPPING TWO HARD DISKS
These examples of Hard Drive Mapping can be found on pgs. 56 &
57 of the OS/2 2.1 Installation Guide.
1. An example of Mapping One Hard Disk:
Primary (Boot Manager) = No drive letter
Primary (DOS 5.0) |
Primary (OS/2 1.3) | = C:
Logical Drive |
(OS/2 2.1) | = D:
Logical Drive (Data) | = E:
Logical Drive (Data) | = F:
2. An example of Adding Another Hard Drive or Mapping Two
Hard Drives:
Boot Manager |=No drive letter
|Primary
|
Primary (DOS5.0) | D:=|Primary
Primary(OS/2 1.3) |=C: |
|Primary
Logical Drive |
(OS/2 2.1) |=E: H:=|Logical Drive
Logical Drive |=F: I:=|Logical Drive
Logical Drive |=G: J:=|Logical Drive
The important thing to remember when you are setting up your
system is that only one primary partition can be assessible
(active) on each hard disk at any system startup. On the other
hand, all the logical drives within the extended partition are
accessible (provided their file system formats are compatible
with the starting operating system). For example, suppose you
had DOS 5.0 in one primary partition and OS/2 2.1 in another
primary partition. One of your logical drives is formatted for
FAT and contains a variety of DOS programs. You could start the
DOS programs from either of the primary partitions.
It is also important to understand what happens to the drive
mapping if you ADD a hard disk AFTER you install OS/2 2.1. The
logical drives on your existing hard disk will be remapped.
Look at Example #1 above. Suppose you have this as an existing
hard drive and it is set up as shown. Then you add a second hard
disk to your system. The primary partition of that second hard
disk will be assigned D. The logical drives of your first hard
disk will be remapped. The existing logical drive D becomes E, E
becomes F, and so forth.
See Example #2, because OS2 2.1 is now in the logical drive
assigned a E, all references to the drive letter (for example,
statements in your CONFIG.SYS and INI files) will have to change.
For this reason, it is preferable to place only logical drives on
the hard disk that you are adding.
------------------------------------------------------------------
DISCLAIMER: The information contained in this document is
distributed "AS IS" without any warranties of any kind either
express or implied. IBM will not be responsible for any direct,
incidental, consequential, special or indirect damages. IBM
EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY AND
ANY IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
The use of this information or the implementation of any of these
techniques is the sole responsibility of the customer and depends
on the customer's ability to evaluate and integrate this
information or implementation into the customer's operational
environment.
------------------------------------------------------------------
BOCA CBRX TEAM - 02/94
If you have any comments or suggestions concerning our Faxes,
please send a note to:
IBM Corporation
Boca CBRX Team
P.O. Box 1328
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Boca Raton, FL 33429
12/31/99