I have a bootable Arch USB with EFI. How can I make it boot in both BIOS and UEFI systems?
#[Solved] Hybrid System (Bios and UEFI)
storm apex
Just installing grub twice, once per mode, should work on most systems.
dawn socket
You can create a BIOS boot partition where GRUB is able to be installed for BIOS on GPT
or just use MBR
storm apex
Btw hybrid MBR usually isn’t required. GPT is probably fine.
drifting haven
Btw hybrid MBR usually isn’t required. GPT is probably fine.
Tried it:-
Installing for i386-pc platform.
grub2-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible.
grub2-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged..
grub2-install: error: will not proceed with blocklists.
You need an unformated partition with the type of BIOS boot
storm apex
^
https://wiki.archlinux.org/title/GRUB#GUID_Partition_Table_(GPT)_specific_instructions
Follow these instructions
drifting haven
I have 2 partitions.
/dev/sdb1 for efi
/dev/sdb2 for root
drifting haven
You need an unformated partition with the type of BIOS boot
What can I do?
storm apex
Shrink one by 1MB and make an unformatted partition with that space
drifting haven
Shrink one by 1MB and make an unformatted partition with that space
I never shrunk a partition before. Can you help?
storm apex
Use gparted. It makes it pretty intuitive. Right click sdb2, Move/Resize, and set free space following to 1MiB. Then make a new partition in the free space. Apply changes when you’re done. Install grub to that partition (likely sdb3).
Technically there is a risk of data loss, so back anything important up first.
You could add it anywhere, but at the end of the drive like I instructed is probably the easiest and fastest.
drifting haven
Use gparted. It makes it pretty intuitive. Right click sdb2, Move/Resize, and se...
What about shrinking /dev/sdb1 ?
storm apex
You could add it anywhere, but at the end of the drive like I instructed is prob...
As I said here, that would be fine.
drifting haven
As I said here, that would be fine.
thanks
crude stagBOT
ari43 received a thank you cookie!
storm apex
Just make sure when you install grub you specify the right partition.
drifting haven
Just make sure when you install grub you specify the right partition.
I already have around 1Mib unallocated
storm apex
Then use that
drifting haven
Then use that
?
storm apex
No file system
drifting haven
No file system
Have to create a new partition.
storm apex
Yes, create a new partition without a file system
drifting haven
A partition can't have a length of 0 sectors.
storm apex
Then you’ll need to free space from one of your other partitions. That 1MiB doesn’t really exist.
I gtg
drifting haven
Then you’ll need to free space from one of your other partitions. That 1MiB does...
Formatted it with cleared ?
drifting haven
Now I can run grub-install --target=i386-pc --recheck /dev/sdb right ?
It worked.
[Solved] Hybrid System (Bios and UEFI)
... solved
split gateBOT
#9742 📣 If there is nothing else that we can do for you, please close this thread by adding "[SOLVED]" to the title.
- You can do this on desktop by clicking the three dots on the top right of the page, and pressing "Edit Post".
- You can also do this on Android / iOS by long tapping your post in the text channel list, and tapping "Edit Post".
Your title should be like so: https://cdn.discordapp.com/attachments/503224329191030787/1039841700417384498/image.png
Thank you
