Using MS-DOS Upgrade Fdisk Program with EXTDISK.SYS (94334)
The information in this article applies to:
• Microsoft MS-DOS operating system 6.0
• Microsoft MS-DOS operating system 6.2
• Microsoft MS-DOS operating system 6.21
• Microsoft MS-DOS operating system 6.22
This article was previously published under Q94334
If were using COMPAQ MS-DOS version 4.0 or later before you upgraded
to MS-DOS 6.0 or later, and you are using EXTDISK.SYS, you should use the
COMPAQ version of the Fdisk program. If you were using COMPAQ MS-DOS
version 3.31 or earlier before you upgraded to MS-DOS 6.0 or later, and you
are using EXTDISK.SYS, you should contact Compaq for an updated version of
Some COMPAQ systems use a driver called EXTDISK.SYS to access secondary
disk drives. This driver is MS-DOS version-dependent. If you use the MS-DOS
version of Fdisk when EXTDISK.SYS is loaded, Fdisk displays incorrect drive
letters for the hard disks attached to the second controller.
You can work around this problem by using the COMPAQ version of Fdisk.
To install the old version of Fdisk:
• Delete FDISK.EXE from the DOS directory.
• Copy FDISK.* from your COMPAQ MS-DOS disks to your DOS directory.
copy a:\fdisk.* c:\dos
• Add Fdisk to the SETVER.EXE version table for your version of
COMPAQ MS-DOS. For example:
setver fdisk.exe 4.0
• Restart your computer.
NOTE: You must use SETVER to tell EXTDISK.SYS that you are using a
previous version of MS-DOS. For more information, query on the
following words in the Microsoft Knowledge Base:
MS-DOS and SETVER and EXTDISK.SYS
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