Question

4

Changed the UEFI motherboard on a dell laptop, now it says no OS detected

rated 0 times [ 4] [ 0] / answers: 1 / hits: 2085 / 2 Years ago, fri, july 15, 2022, 9:39:59

My laptop was running the latest Ubuntu, because of a minor issue, the motherboard was replaced. The new motherboard has the same specifications as old. But after replacing, the OS is not detected.

Is there some setting in BIOS which can fix the issue or should I
really re-install Ubuntu?

If I re-install Ubuntu, will I lose the
data?

Help appreciated.

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utonmbo

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answered 2 Years ago bearous · Accepted Answer

The path to Ubuntu efi loader should be added to your motherboard UEFI.

Boot from Ubuntu LiveUSB and run in terminal:

sudo efibootmgr -c -l "EFIUBUNTUSHIMX64.EFI" -L ubuntu

Then reboot normally. You will get a boot option "ubuntu".

If your EFI partition is not the default /dev/sda1, then the command will look this way:

sudo efibootmgr -c -l "EFIUBUNTUSHIMX64.EFI" -L ubuntu -d /dev/sdX -p N

where /dev/sdX is the disk and N is the partition number. If your EFI partition is /dev/sdb2, then it will look as -d /dev/sdb -p 2.