I know that :P, but when I put the AMD PCnet drivers from a floppy image (either IMG or IMA or VFD) or any floppy image, it gets that damned error which is “The Disk media is not recognized, it may not be formatted” on Qemu

For some reason, normal “-drive” syntax don’t work well with other devices besides the default supported scsi adapter, so you need change the whole “-drive” default command parameter to this:

-device scsi-cd,drive=scd0 -drive file=winnt31.iso,if=none,bus=0,unit=2,id=scd0

Where “winnt31.iso” is your NT3.1 CD image. “id=scd0” can be any recognizable tag for you, as this is only a identifier so scsi-cd device can take over the “-driver” directive.

For the record, dc390 emulation works well, supposing that you provided the correct Adapter ROM to QEMU. Even you can have a SCSI-Only NT 3.1 setup using this emulation.

You can upload a good ROM copy from there:

ftp://ftp.tekram.com.cn/Storage/SCSI/PCI/DC-390X/DC-390/BIOS/V203/

User: down
Pass: down

Drivers:

ftp://ftp.tekram.com.cn/Storage/SCSI/PCI/DC-390X/DC-390/Driver&AP/DOS&WIN/v321/

Greetings.

I tried setting it to ID 2, but still got the same messagge

Then try to use the SCSI ID No.2.

From the SETUP.TXT Readme: “When you are installing Windows NT from a SCSI CD-ROM device, make sure that the device does not have an ID of 0 or 1. Some SCSI BIOS programs reserve 0 and 1 for hard disks. If you set your CD-ROM with an ID of 0 or 1, you will likely see an extra partition in Setup that does not exist. ”

“The SCSI and CD-ROM support built into Windows NT 3.1 requires that CD-ROMs provide SCSI parity to function properly. For many drives this is a configurable option or is active by default. Check the documentation for your CD-ROM to find specifics on how this is configured for your drive.”

For some reason, even if I set the SCSI CD ID to Unit 3 (also tried IDs 4, 5 and 6), the driver gets recognized, but still says that there are no SCSI CDROM drives during setup (by using the cdinstall.ima CD bootdisk, not DOS based)

I already know that NT 3.1 CDs weren’t bootable back in the day (1993), but thanks for the command line 😀

To your working QEMU commandline you should add the following:

-device am53c974 -drive file=winnt31.iso,if=scsi,media=cdrom,bus=0,unit=3

where “winnt31.iso” is you path to your NT31 CD iso, and “unit=3″ is your SCSI ID for you CDROM (As far as i know NT31 doesn’t like CDROMS using the first 3 IDs).

Remember that NT31 CDRoms don’t have boot support, so you will need all the following to you QEMU working command line.

-fda nt3btdsk.vfd -fdb amddrv.vfd

Where nt3btdsk.vfd is your NT31 bootdisk (you can make it with the NT31 winnt.exe app), and amddrv.vfd is your AMD PCSCSI NT31 driver disk.

Greetings.

-device am53c974 -drive file=winnt31.iso,if=scsi,media=cdrom,bus=0,unit=3

where “winnt31.iso” is you path to your NT31 CD iso, and “unit=3” is your SCSI ID for you CDROM (As far as i know NT31 doesn’t like CDROMS using the first 3 IDs).

Remember that NT31 CDRoms don’t have boot support, so you will need all the following to you QEMU working command line.

-fda nt3btdsk.vfd -fdb amddrv.vfd

Where nt3btdsk.vfd is your NT31 bootdisk (you can make it with the NT31 winnt.exe app), and amddrv.vfd is your AMD PCSCSI NT31 driver disk.

Greetings.