Microsoft KB Archive/97420

= MS-DOS 6 Upgrade Setup Err Msg: Current Drive Must Be Set to A =

Article ID: 97420

Article Last Modified on 11/26/1999

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APPLIES TO


 * Microsoft MS-DOS 6.0 Standard Edition
 * Microsoft MS-DOS 6.2 Standard Edition
 * Microsoft MS-DOS 6.21 Standard Edition
 * Microsoft MS-DOS 6.22 Standard Edition

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This article was previously published under Q97420



SYMPTOMS
You may receive the following error message if you attempt to install MS-DOS from a drive other than A:

Current Drive Must be set to A



CAUSE
This error message can occur when one or more of the following conditions exists:
 * Your CMOS settings are incorrectly set and do not include your floppy disk drive.
 * You are using a high-capacity optical drive with removable disks (called a &quot;floptical&quot; drive) and the device driver for it is incompatible with Setup.
 * You are using an external floppy disk drive and the device driver for it is incompatible with Setup.
 * You are using a 2.88-megabyte (MB) floppy disk controller. (Some of these use extended BIOS chip sets that are incompatible with Setup.)



WORKAROUND
If your drive C has at least 9 MB free space, you can work around this problem by copying the MS-DOS 6 Upgrade files to your hard disk drive and running Setup from your hard disk drive. To do this, use the following steps:
 * 1) Create a temporary directory on your drive C. For example, type MD DOSTEMP at the MS-DOS command prompt and then press ENTER.
 * 2) Copy the MS-DOS Upgrade files from each floppy disk to the DOSTEMP directory. For example, type copy b:\*.* c:\dostemp at the MS-DOS command prompt and then press ENTER.
 * 3) To run Setup, type c:\dostemp\setup at the MS-DOS command prompt and then press ENTER.

Additional query words: 6.22 6.00 6.20 drive A B upgrade step-up stepup

Keywords: KB97420

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