From Newsgroup: comp.sys.tandy
On Mon, 4 Jul 2022 11:16:32 -0700 (PDT), Paul Biasella <
prb359@gmail.com> declaimed the following:
I have a Tandy 1000EX that's been in storage for over 5 years. I bought some Tandy MS-DOS 5.25" floppy disks from a seller on eBay. When I insert his newly made boot disk in the internal 5.25" drive and turn on the computer, instead of booting up it displays the message "Boot Failure". The disk drive light turns on and it sounds like it's operating correctly. Do I need to clean the disk drive? Do I need a different boot disk? If I add an external floppy drive can I boot from that? Is my internal floppy drive defective?
I'd try to verify the contents of the floppies. According to Wikipedia
https://en.wikipedia.org/wiki/Tandy_1000#1000_EX
"""
The 1000 EX came with MS-DOS 2.11 and Personal Deskmate on 5.25" 360kB diskettes. The MS-DOS was a version specialized for and only bootable on
the Tandy 1000; it included a version of BASICA (Microsoft's Advanced
GW-BASIC) with support for the enhanced CGA graphics modes (a.k.a. Tandy Graphics or TGA) and three-voice sound hardware of the Tandy 1000.
"""
Note: "The MS-DOS was a version specialized for and only bootable on the
Tandy 1000" sort of implies that the reverse is also true, and regular
MS-DOS disks would not boot.
Otherwise, no help -- I've got a TRS-80 Model III/4 (upgraded main board, original housing/floppies/power-supply) in storage. Hasn't been
powered up in over 20 years. Suspect I'd have to patch the OS for newer
decades (the original OS only had three bits for the year offset), assuming
the drive heads don't snap off as soon as the disk spins up.
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