Out of Space

[Liam Proven]

On 9 August 2016 at 15:47, Oliver Grawert <ogra at ubuntu.com> wrote:
> i thought that was the setup described above (grub being 850GB into the
> 1TB disk), but i re-read again and gene was talking about /boot not
> grub ... sorry for the confusion then, if grub sits in the MBR it
> should surely find everything...


If a large disk (terabyte+) is formatted as a single huge partition,
then yes, 5% of it for metadata is plausible.

But it's probably more normal to partition it up into smaller
subvolumes. E.g. my Mac's external 3TB drive has Ubuntu root & home
partitions, a Windows partition, a bootable copy of the previous
version of Mac OS X, and then a ~2TB Time Machine partition.

Yes, GRUB can be installed into the MBR (the normal way) or into a
partition's boot sector (needs `` -- force '' & it complains, but it
works).

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.

-- 
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