Re: Unable to install GRUB in dummy

[Max Nikulin <manikulin@gmail.com>]

On 01/04/2025 03:09, hlyg wrote:
> in the end i use mbr, as one of my PCs doesn't support gpt

It depends on firmware, but I expect that UEFI spec describes 
requirements for ESP in the case of MBR partitions.

> btw what is recommended size of efi partition?
>
> default size is 512M

sgdisk(8)
>        *      Boot  disks  for EFI-based systems require an EFI System
>               Partition (gdisk  internal  code  0xEF00)  formatted  as
>               FAT-32.  I  recommended  making  this partition 550 MiB.
>               (Smaller ESPs are common, but some EFIs have  flaky  FAT
>               drivers that necessitate a larger partition for reliable
>               operation.) Boot-related files are  stored  here.  (Note
>               that GNU Parted identifies such partitions as having the
>               "boot flag" set.)

A week ago Jeffrey posted the following link
<https://wiki.debian.org/UEFI#EFI_System_Partition_.28ESP.29_recommended_size>
with other sources and recommendations.