On 12/16/24 10:50, Joe wrote:
I would add that many modern computers are almost hardwired for Windows. ... So I gave up, and just installed bookworm clean. No bootable OS found. I'll cut it short: it wouldn't boot because a /boot/efi/EFI directory did not contain a Microsoft directory containing bootmgfw.efi. Previously, it had been happy to boot from the Linux EFI file, but obviously only because this wretched Windows setup was there. Just to be on the safe side, I copied shim64.efi and renamed it bootmgfw.efi, all in a directory named Microsoft. No problem now.
That is a clever work-around. And, good reason to take an archival image of a Windows machine the first time you touch it.
I use BIOS/MBR or UEFI/legacy when available, but the newest Windows machines are UEFI/GPT only and I have limited experience. Hopefully, the OP will not need such tricks.
David