MS-DOS 3.31

System

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1040ST

Is the "Microsoft MS-DOS 3.31 (3.5-1.44mb)" bootable?

[Deleted User]

It should be. Try finding Disk 1 and booting off of that first.

ibmpc5150

MS-DOS 3.3x supports 3.5" 1.44MB officially.
So it should be boot from 3.5" 1.44MB floppy drive.
But it is not so stable on 3.3x than 5.x or higher.

Legacy OS

I have created tutorials on how to install DOS 3.31 on various virtualization/emulation tools -
VirtualBox - https://bit.ly/3vl5wAH
VMware - https://bit.ly/3hRBZLk
QEMU - https://bit.ly/3hSrV4G
86Box - https://bit.ly/3ujaPiL
PCem - https://bit.ly/3uj7joP
MESS/MAME - https://bit.ly/2RA2g65
DOSBox - https://bit.ly/3vnnm6m

dieymir

That "unidentified" MS-DOS 3.31 comes from a Vendex HeadStart Explorer ROM.

See these screenshots:
https://oldcomputer.info/gallery.php?spgmGal=Museum/PC/HeadStart_Explorer&spgmPic=11#spgmPicture
https://oldcomputer.info/gallery.php?spgmGal=Museum/PC/HeadStart_Explorer&spgmPic=12#spgmPicture

SomeGuy

I don't see anything Vendex specific on that disk. They may have used the same binaries, but other vendors may have used them too. But that said, that generic disk image is crufty. Any better redumps and label scans would be much appreciated.

thrsded2333

"Is the "Microsoft MS-DOS 3.31 (3.5-1.44mb)" bootable?"

yes it is bootable

ibmpc5150

3.5" 1.44MB is supported from IBM/MS-DOS 3.30,
but I think it seems to be unstable than version 5.0 or 6.x from reading real floppy drive.