Re: booting from install usb
On 5/9/22 14:19, Felix Miata wrote: Paul Scott composed on 2022-05-09 12:25 (UTC-0700): I let my laptop update its UEFI BIOS which of course zapped GRUB. Not in the way you think... /dev.sda2 which is "ef EFI (FAT-12/16/32)" This should be the key, suggesting strongly that your Linux installation is installed in UEFI mode. That is correct. I did install in UEFI mode. If this is the case, you should be able to fix the problem via BIOS setup, to select the (presumably Debian) entry that is probably there to select as top priority. After the BIOS update I mentioned the only boot choice was Windows which is why I figured some part of the GRUB stuff had been broken or deleted. Alternatively, having executed mount -a after chrooting, running efibootmgr should allow reorganizing the priority list to put your choice at the top, or to add a new one if the one you need to be first is missing. man efibootmgr That didn't seem to work but as I was trying to figure out why I discovered I must have missed where rescue mode was telling me to mount the partition that must have had the EFI stuff I needed. I can't give precise information but I was able to reinstall GRUB from Rescue mode and now all is well! Thank you very much for your help, Paul
Re: booting from install usb
Paul Scott composed on 2022-05-09 12:25 (UTC-0700): > I let my laptop update its UEFI BIOS which of course zapped GRUB. Not in the way you think... > /dev.sda2 which is "ef EFI (FAT-12/16/32)" This should be the key, suggesting strongly that your Linux installation is installed in UEFI mode. If this is the case, you should be able to fix the problem via BIOS setup, to select the (presumably Debian) entry that is probably there to select as top priority. Alternatively, having executed mount -a after chrooting, running efibootmgr should allow reorganizing the priority list to put your choice at the top, or to add a new one if the one you need to be first is missing. man efibootmgr -- 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
