[Discuss] Grub, EFI, Partitioning…

[jbk]

On 9/2/24 16:19, jbk wrote:
> On 9/2/24 15:00, Kent Borg wrote:
>> Do any of you quickly know what is needed to be modern 
>> Linux boot partitions?
>>
>> I have a /boot and a /boot/efi that Debain installed on 
>> my internal SSD and I would like to duplicate them on an 
>> external device. What do I need?
>>
>> - partition as a GPT not MBR table
>>
>> - format /boot with some Linux file system
>>
>> - format /boot/efi with vfat
>>
>> - copy files in
>>
>> - install grub
>>
>> …does that cover it?
>>
>> Last I think I tried that my BIOS didn't want to boot 
>> from it.
>>
>>
>> Thanks,
>>
>> -kb
>>
>> _______________________________________________
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>
> Boot should be ext4 as grub can read that file system type 
> on boot.
> After installing grub you need to register the file 
> /boot/efi/EFI/debian/shimx64.efi with the efibootmgr. The 
> man page for efibootmgr gives good examples for how.
>
> That last step should be done on the machine you intend to 
> boot from. If you skip that step then you have to boot 
> from the machine firmware menu.
>
If you do the grub install on the destination machine it 
should do the efibootmgr step for you.

-- 
Jim KR