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by danielktdoranie 550 days ago
Yeah it's really odd how much OS/2 software has been lost considering the last IBM release of OS/2 Warp was only December 2001. Thanks for your work. Personally, I am currently debating buying a ThinkPad T23 or T30 and dual booting OS/2 Warp 4.51 and Arca OS 5.1
1 comments

I was a keen OS/2 2.x user.

I reviewed ArcaOS:

https://www.theregister.com/2023/09/04/arcaos_51/

... and interviewed one of the project leads:

https://www.theregister.com/2023/01/19/retro_tech_week_arca_...

So when I read this:

> dual booting OS/2 Warp 4.51 and Arca OS 5.1

... I laughed, bitterly.

It is still _extremely_ fussy about installation and across 4 test machines I never got ArcaOS to dual-boot with anything except a single basic IBM PC DOS 7.1 setup.

Anything more than a single bootable primary partition in BIOS config is highly unlikely to work, in my experience. In UEFI mode it's even fussier and of course actual IBM OS/2 won't run then.

Forget dual booting, except maybe with DOS.

Trying to dual boot two OS/2 instances sounds like a recipe for hair loss or a cardiovascular incident. I don't think I'd try to do that if you paid me. Paid me a lot.