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1997-05-16
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OSINMAPD - HARD-DISK MAPPING FOR OS/2
01/29/96
=======================================================================
Hard-Disk Mapping for OS/2
=======================================================================
Please Read Entire Document for Full Explanation of Procedures
--------------------------------------------------------------
DESCRIPTION
This document describes mapping of hard disks for OS/2.
RESOLUTION
At system startup time, only one primary partition can be accessible
(active) on each hard disk. 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, assume you have DOS 6.1 in one primary partition and OS/2
Warp in another, and one of your logical drives is formatted for FAT
and contains a variety of DOS programs. You can start the DOS programs
from either of the primary partitions.
It also is important to understand what happens to the drive mapping if
you ADD a hard disk AFTER you install OS/2. The logical drives on your
existing hard disk will be remapped.
Example of Mapping One Hard Disk
--------------------------------
If you have the setup above and add a second hard disk to your system,
the primary partition of the 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 on, as follows:
Primary (Boot Manager) = No drive letter
Primary (DOS 5.0) |
Primary (OS/2 1.3) | = C:
Logical Drive |
(OS/2 2.1) | = D:
(OS/2 Warp)
Logical Drive (Data) | = E:
Logical Drive (Data) | = F:
Example of Adding Another Hard Disk or Mapping Two Hard Disks
-------------------------------------------------------------
OS/2 is in the logical drive assigned as "E." All references to the
drive letter (for example, statements in your CONFIG.SYS and INI files)
have to change. For this reason, it is preferable to place only logical
drives on the hard disk that you are adding. See the following.
Boot Manager |=No drive letter
|Primary
|
Primary (DOS 6.1) | D:=|Primary
Primary(OS/2 2.1) |=C: |
|Primary
Logical Drive |
(OS/2 2.1) |=E: H:=|Logical Drive
(OS/2 Warp)
Logical Drive |=F: I:=|Logical Drive
Logical Drive |=G: J:=|Logical Drive
______________________________________________________________________
IBM disclaims all warranties, whether express or implied, including
without limitation, warranties of fitness and merchantability with
respect to the information in this document. By furnishing this
document, IBM grants no licenses to any related patents or copyrights.
Copyright (c) 1994, 1996 IBM Corporation. Any trademarks and product
or brand names referenced in this document are the property of their
respective owners. Consult your product manuals for complete trademark
information.