DRIVPARM Must Be Used with Tandy 1000HX, 1000TX, 1400LT/HD (80434)
The information in this article applies to:
• Microsoft MS-DOS operating system 5.0
• Microsoft MS-DOS operating system 5.0a
• 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 Q80434
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.
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
Using other size parameters results in the following error message:
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.
"Microsoft MS-DOS User's Guide and Reference," version 5.0, pages
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