On 02/01/2014 12:03 PM, John P. Willis wrote:
but this machine can only boot from the 5.25"
drive. I have plenty of
DSHD 5.25" media (brand new) upon which to write an MS-DOS boot
floppy, but the only other machine I have whose BIOS claims to
support 5.25" drives will neither read nor write 5.25" media in any
of the three drives I've tried, claiming that track 0 is bad, or
giving me a general failure error. Swapping the 5.25" and 3.5" drives
in the NEC is out, since I would again need to get to the BIOS
settings in order to make it all work.
Have you tried DSDD ("360K") media? Unlike its 3.5" siblings, there is
quite a bit of difference magnetically speaking between the DD and HD
media. That is, you can't reliably (if at all) format one as the other.
--Chuck