System requirements - Was: Out of Space

[Tom H]

On Wed, Aug 10, 2016 at 7:37 AM, Ralf Mardorf <silver.bullet at zoho.com> wrote:

> https://lists.ubuntu.com/archives/ubuntu-users/2016-August/286767.html

This link has

<begin>
The only issue I see here is that terabyte-sized drives are usually
partitioned with GPT, not MBR. With GPT there is no MBR present.
However, GPT disks are only bootable on UEFI machines. With UEFI, a
boot disk must have a ~100MB FAT32 system partition, and as I
understand it, GRUB goes in there, not in the disk's boot sector or in
the root partition's boot sector.
</end>

which is incorrect.

You can boot from a gpt-labeled disk on a non-efi system. The MBR
gap's replaced by a 1MB bios_boot partition for grub to embed an image
into.

Furthermore, the first sector (the first 512B) is a "protective MBR,"
which the same as a msdos-labeled disk's MBR. IIRC, grub embeds an
image into the first 446B just like on an msdos-labeled disk.