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EMS and usbmass.exe problem

December 2, 2016 at 17:59:49
Specs: MS-DOS 7.1, Penitum 166 Mhz - EDO 64 MB
I need to load EMS (EMM386.exe) and USBMASS (proprietary usb 2.0 driver) on this harddrive-less Pentium 1 computer.

With ems, while usbmass.exe loads, when I check my usb stick dir, instead of the list of files, all I see is "IO.SYS" and nothing else.

So I guess this has to do with emm386 and how it is using some part of the memory that usbmass.exe needs, because without ems, usbmass.exe works fine.

The usbmass.exe allows one to define the start address of i/o pool and the start address of memory pool, the help page says:

/IO:n start address of I/O pool (default 0x00002000)
/M:n start address of memory pool (default 0x000D0000)

What parameters should I pass to either emm386.exe or usbmass.exe to get them both working at the same time?

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December 3, 2016 at 01:42:27
Hi Maferv,

is the operating system dos? and not dos running under something else.

If so, are you sure CONFIG.SYS and AUTOEXEC.BAT are actioning as expected.

To check such, there is a facility to step through these one line at a time.

Could usb1 hardware be involved? - as if I understand correctly you can see one file on the stick (which I thought was supposed to be hidden) but no others.

Good Luck - Keep us posted.

message edited by Mike Newcomb

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December 3, 2016 at 13:10:18
Normally you'd load himem.sys, then emm386.exe and then the other stuff in config.sys.

Io.sys and msdos.sys are hidden files and shouldn't show unless you do a dir/a:h command. Maybe you didn't get the system files transferred correctly. You can use somethig like rufus:

to set up a bootable USB drive. Support for USB in dos is kind of iffy and you may need to play around with the files and their order in loading to get it working.

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December 4, 2016 at 03:42:22
Hi Dave,

I am not sure a booting from a USB is possible on a (maybe dos os based) Pentium 1. Surely it depends on the bios having the capability.
Interesting it has no hdd.
Some more details asto what the pc is used (or intended) for could be useful.

Perhaps the op only wants to access files on a USB Memory Stick.

Being such an early pc prompted my comment about usb1,
Maybe a usb2 card has been added.

Regards - Mike

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December 4, 2016 at 14:05:47
Yeah I missed that. A P-I bios probably won't allow booting from USB. I wonder what he's trying to accomplish. He's got to be able to boot from something. Floppy maybe?

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