How do I install MS-DOS 6.22 upgrade in a virtual machine without bootable DOS 6.0 installation media?

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I am trying to create an MS-DOS 6.22 virtual machine in VMware.

I have MS-DOS 6.0 and the 6.22 upgrade from the MSDN subscriber downloads. In order to install the 6.22 upgrade, I have to install 6.0 first. The 6.22 download includes .IMG files from which I can boot, but the 6.0 download does not. I tried creating a bootable .ISO image from the 6.0 files, but that didn't work.

How do I install it?

raven

Posted 2009-09-19T17:16:50.080

Reputation: 5 135

Answers

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You can install using 6.22 alone. Boot into the 6.22 install and exit the setup with F3 before you get the upgrade warning and return to the DOS prompt.

You need to FDISK and Format the C: drive. Then you can use the SYS command to transfer the system files to C:. After all this, run the 6.22 install again and you should no longer get the upgrade warning.

Tom Willwerth

Posted 2009-09-19T17:16:50.080

Reputation: 286

1Late but: honestly, I would personally like to know why this works. I just did it, and it seems to work, since the sys command seems to only copy IO.SYS, MSDOS.SYS, and COMMAND.COM (unless there was another file I forgot about, or I am dead wrong about what sys does), but I still wonder what doesn't get installed this way as opposed to with the "pure" install disks, which do they even exist? – andlabs – 2017-05-28T17:13:39.277

I had totally forgotten about the SYS command. – Stuart Woodward – 2011-11-09T22:13:58.690

> You can install using 6.22 alone.   Really? I thought the upgrade was just, well, an upgrade. Obviously a full version of 6.22 would work by itself, but the one on TechNet that they referenced is just an upgrade. – Synetech – 2012-09-01T23:56:30.597

Asked: 2009-09-19T17:16:50.080

Viewed: 5 088 times

Active: 2016-12-26T11:27:11.103