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gomeromer
n00b
Joined: 02 Apr 2021
Posts: 23
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 Posted: Sun Apr 18, 2021 10:31 am Post subject: installing grub on bios mbr |
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I followed the handbook and partitioned my disk like this:
1-boot /boot ext4 type linux
2-swap none swap type swap/solaris
3-root / ext4 type linux
My computer uses bios= it says Lenovo BIOS setup so i assumed that its not uefi....
My disk has a dos-mbr partition table and no empty space at the beginning since the handbook said that for bios/mbr it is not needed.
I installed grub with:
emerge --ask --verbose sys-boot/grub:2
now i need to do grub install.
So i did grub-install /dev/sda and i get:
grub-install: error: cannot find EFI directory.
But the firmware setup says BIOS?????? |
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alamahant
Advocate
Joined: 23 Mar 2019
Posts: 3879
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| Posted: Sun Apr 18, 2021 10:36 am Post subject: |
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Hi
please check
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ls /sys/firmware/efi/efivars
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gomeromer
n00b
Joined: 02 Apr 2021
Posts: 23
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| Posted: Sun Apr 18, 2021 10:42 am Post subject: |
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| alamahant wrote: | Hi
please check
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ls /sys/firmware/efi/efivars
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it returns a bunch of lines with numbers |
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alamahant
Advocate
Joined: 23 Mar 2019
Posts: 3879
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| Posted: Sun Apr 18, 2021 10:49 am Post subject: |
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You have uefi.
You need that is an esp partition around 200-500M of type esp formated vfat mounted on /boot/efi
Make sure to create a gpt partition table on your disk.
in
make.conf
edit
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GRUB_PLATFORMS="efi-64"
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Then run
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emerge -1av grub
grub-install --target=x86_64-efi --efi-directory=/boot/efi
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Do not throw your hard work.
Just move it temporarily on a usb stick via rsync and bring it back later.
If this feels too much then you may keep the mbr partition drive and just create an esp.
I hope it will be ok.
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Buffoon
Veteran
Joined: 17 Jun 2015
Posts: 1369
Location: EU or US
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| Posted: Sun Apr 18, 2021 1:12 pm Post subject: |
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The error is probably because the box was booted in EFI mode, you can still stay with MBR boot, just boot in CSM mode and Grub should be happy.
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