Sent from my iPhone
  On Oct 4, 2020, at 1:07 PM, Fred Cisin via cctalk
<cctalk at classiccmp.org> wrote:
  On Sun, 4 Oct 2020, Will Senn wrote:
 I am using a Thinkpad T430 w/DOS 6.22. If I can figure out how to get 3.31 on there,
I'll give it a shot. I bought a Floppy-USB connector for my old 1.44 floppy drive and
it works fine with DOS 6.22, but I'm not sure where to locate 3.31 media that I could
burn onto a 1.44 floppy and boot. I have sealed IBM DOS 3.3 media, but I don't think
my T430 is really compatible :). So, I'm not keen on opening the seal... 
 I'm curious.
 6.22 did not have native USB support - that didn't come about until WIN98SE.
 Are you running CONFIG.SYS drivers for it?
  
I think it?s the laptop BIOS faking the USB as a standard floppy to DOS.
  If you can find an original copy of COMPAQ MS-DOS
3.31, that was originally available on 1.2M and 1.4M
 Zenith MS-DOS 3.31 is another popular choice.
 Try to find it, rather than opening the PC-DOS 3.30.  3.30 (and all earlier) did not
support HDD >32M, although there were ways to cheat that limitation, such as the
network redirector (with MSCDEX) coul make a local drive LOOK like it was a network drive
elsewhere.
  
Great to know, thanks!
  --
 Grumpy Ol' Fred             cisin at 
xenosoft.com