On Tue, 27 Apr 2021 at 14:58, Eric Auer <e.a...@jpberlin.de> wrote: > Computers which support ONLY UEFI > operating systems will not work (unless you load a CSM, but there > is none I could recommend for DOS).
CSM is short for Compatibility Support Module. It is a module that enables UEFI firmware to also support "legacy" booting, i.e. BIOS compatibility. Windows 7 required this. AFAIK this is a vendor choice, normally, not an end-user one. I do not think that an end-user, the owner, can add CSM to an existing machine whose firmware lacks it. > But most computers still do > support BIOS, I think. UEFI vs BIOS is either-or. A single machine can't have both, and I do not know of any where it is a choice. It is a design decision. I suspect that 99% of PC vendors will have no idea what "does your firmware support CSM" would mean. Therefore a salesperson will almost certainly just lie and say "yes" to get the sale. The real question is: "can the machine boot DOS?" Even so, I think very few would know. Try it and see is the best answer. -- Liam Proven – Profile: https://about.me/liamproven Email: lpro...@cix.co.uk – gMail/gTalk/gHangouts: lpro...@gmail.com Twitter/Facebook/LinkedIn/Flickr: lproven – Skype: liamproven UK: +44 7939-087884 – ČR (+ WhatsApp/Telegram/Signal): +420 702 829 053 _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
