Is there a way to reinstall Grub-EFI?
If your EFI based PC is not booting debian, here is an easy way to reinstall grub-efi, the bootloader used by debian on these PCs. To reinstall grub, you need either a live CD/USB to access your current system , or you can use the rEFInd boot manager on a live CD/USB to boot your current system.
How to switch from Grub UEFI to Debian Live?
If there is no space left on your hard drive, use Debian Live to make some. Create a small partition (1 MiB would be far enough), type it as an EFI System Partition, format it as FAT and mount it (permanently, using the fstab) on /boot/efi (that directory will not exist, so create it first). 3 Switch to GRUB UEFI
How does UEFI boot manager work on Debian?
It involves one specific piece of the motherboard’s firmware, the UEFI Boot Manager, which is able to load boot loaders from FAT file systems on specially-typed partitions. It can offer a boot menu (boot: Debian from HDD, Windows from HDD, USB stick, DVD?), which can be configured from a running operating system.
Where are grub files located in Debian legacy?
This partition is never encrypted. It is where the grub files and Linux kernels reside. Check by double clicking on the partition icon on the live-disk-desktop and have a look inside. As you can see in the following partition table of the Debian legacy boot system my /boot partition is number 1 ( /dev/sdb1 ).
What do I need to reinstall Grub on my computer?
To reinstall grub, you need either a live CD/USB to access your current system , or you can use the rEFInd boot manager on a live CD/USB to boot your current system.
What to do if Windows won’t boot UEFI?
Temporarily also disable the TPM (trusted platform module). if these settings are really all not there, it can still work normally. the issue is not that the OS cannot boot, the issue is only that windows is refusing to detect it.
How to fix Ubuntu dual boot with Grub?
Turn off secure boot (there is nothing called GRUB in the BIOS, this is only a UNIX term, don’t try to look for this.) Then turn off safe boot. Temporarily also disable the TPM (trusted platform module). if these settings are really all not there, it can still work normally.
Are there any downsides to using rEFInd instead of Grub?
GRUB’s configuration file format is very complex. It usually works OK because its configuration scripts do the right thing most of the time; but when the scripts get it wrong, fixing it can be a nightmare. Because rEFInd’s configuration files are simpler, it tends to be easier to fix and tweak its configuration.
Can you boot grub from a live USB drive?
– Zanna ♦ May 4 ’19 at 2:37 The install of GRUB on your computer cannot be easily used to boot from a live USB. You will need to open your device firmware or boot menu and set the USB drive containing your live Linux install as the first boot option.