Joe composed on 2023-11-28 15:02 (UTC-0000): > the BIOS resets > DefaultBoot to the Windows drive and I then need a rescue OS to get back > to grub.
If this is accurate, your BIOS is broken. It's standard procedure for a PC BIOS, even since before UEFI in PCs became commonplace, to provide a BBS menu (BIOS Boot Service). These are a hotkey distinct from a BIOS setup hotkey but used in same manner, to interrupt control shifting from BIOS to disk with a menu offering a selection of media to attempt to boot from. Common keys are: Abit F9 Acer F12 or ESC or F9 ASRock F11 Asus F8 Biostar F9 Dell F12 eCS F12 or F10 eMachines F10 EVGA F7 Gateway F12 or F10 Gigabyte F12 HP/Compaq F9 or ESC or ESC,F9 Intel F10 Lenovo F12 or F8 or F10 MSI F11 Shuttle ESC or F11 or F7 Toshiba F12 Once the BBS menu appears, you should be able to select Debian UEFI (UEFI), or the disk where Grub was installed (Legacy/BIOS), or a USB stick, or OM drive, or PXE, etc. -- Evolution as taught in public schools is, like religion, based on faith, not based on science. Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata