Can't detect USB flash drive under DOS — system hangs - China DOS Union Forum

I don't know if any expert knows why I can't detect the USB flash drive under DOS.
Also, my drive letters only go up to G: (it works normally under WINXP),
but I can select drive H:, and it shows a size of 1.6M.

This started after I had previously used USB boot under DOS (and it worked normally), then formatted drive C:

and then just did a warm boot.

After entering again, I could no longer use USB boot.

I installed WIN98 too, and it was still the same, it still couldn't be detected.
The USB flash drive driver is normal.
After inserting the USB flash drive, the situation is:

Everything on drive C: is normal, but in the middle there is a drive D: with the size of the USB flash drive; it can't be opened and can't be used either.

The original D:, E:, F:, G: have become E:, F:, G:, H:.

What exactly is the problem!？？！

Floor1　Anson888	Posted 2006-03-10 03:42
新手上路　Posts 6　Credits 16
I don't know if any expert knows why I can't detect the USB flash drive under DOS. Also, my drive letters only go up to G: (it works normally under WINXP), but I can select drive H:, and it shows a size of 1.6M. This started after I had previously used USB boot under DOS (and it worked normally), then formatted drive C: and then just did a warm boot. After entering again, I could no longer use USB boot. I installed WIN98 too, and it was still the same, it still couldn't be detected. The USB flash drive driver is normal. After inserting the USB flash drive, the situation is: Everything on drive C: is normal, but in the middle there is a drive D: with the size of the USB flash drive; it can't be opened and can't be used either. The original D:, E:, F:, G: have become E:, F:, G:, H:. What exactly is the problem!？？！

Floor2　Anson888	Posted 2006-03-10 18:45
新手上路　Posts 6　Credits 16
Does nobody know?

Floor3　Anson888	Posted 2006-03-10 18:55
新手上路　Posts 6　Credits 16
Bumping it up myself

Floor4　Anson888	Posted 2006-03-11 16:55
新手上路　Posts 6　Credits 16
Disappointed Can nobody really help? Even if you don't know, you could at least leave a message

Floor5　warmoon	Posted 2006-03-11 19:26
初级用户　Posts 13　Credits 40　From 浙江温州曾在宁波
Hehe, I don't know either, let's wait for the answer together, ：）

Floor6　sungp	Posted 2006-03-13 05:18
初级用户　Posts 10　Credits 20　From Tainan
http://johnson.tmfc.net/freedos/usbdrv.html I don't know whether this will help you http://johnson.tmfc.net/freedos/file/usb15.zip