Microsoft KB Archive/80434

= DRIVPARM Must Be Used with Tandy 1000HX, 1000TX, 1400LT/HD =

Article ID: 80434

Article Last Modified on 11/16/2006

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APPLIES TO


 * Microsoft MS-DOS 5.0 Standard Edition
 * Microsoft MS-DOS 5.0a
 * 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 Q80434



SUMMARY
Tandy Corporation has confirmed that Tandy 1000HX, 1000TX, 1400HD, and 1400LT computers with 3.5-inch disk drives may not format disks properly after upgrading to MS-DOS 5.0 or later.

For proper floppy drive use after installing MS-DOS 5.0 or later, the DRIVPARM statement must be used with the /I switch in the CONFIG.SYS file.



MORE INFORMATION
After installing the MS-DOS 5 Upgrade on a Tandy 1000HX, 1000TX, or 1400LX computer, the computer attempts to format a 3.5-inch disk as a 360K disk.

Using other size parameters results in the following error message:

Invalid Parameter, This Mode Not Supported, Formatting 360K

According to Tandy Corp., this problem can be worked around by using the /I switch with a DRIVPARM statement in the CONFIG.SYS file. Using DRIVER.SYS or DRIVPARM alone will not eliminate the problem.

The following statement should be placed in the CONFIG.SYS file: drivparm=/d:[drive number] /f:[size of drive] /i The /I switch indicates an electronically compatible disk drive.

The Tandy products included here are manufactured by a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

