OS uninstallable

[Bret Busby]

On 25/3/23 06:07, Colin Law wrote:
> On Fri, 24 Mar 2023 at 21:31, Bret Busby <bret at busby.net> wrote:
>>
>> Hello.
>>
>> I have just spent about five hours unsuccessfully trying to install each
>> of Linux Mint Mate 21.1, Linux Mint Mate 21, and UbuntuMate 22.04 .
>>
>> It goes through the installation process, then terminates with the
>> unintelligible error
>>
>> "Unable to install GRUB (as superuser)
>> Executing 'grubinstall failed.
>> This is a fatal error"
> 
> Are you sure you are telling it to install on the correct drive?
> Remember the allocations may be different to your usual setup when
> booting off a USB stick.
> 
> Colin
> 
The Ventoy drive (the USB thumb drive that contains the ISO images) 
shows as sdb<n> .

I have been trying to install to a partition on sda; the system SSD 
internal drive (the SSD functioning as the system HDD). I have 
previously installed to internal SSD's, functioning as primary HDD's, on 
other computers, without this problem (or, any other significant problem).

On sda, are two partitions for MS Windows; NTFS partitions, and I had 
created a partition for /, a partition for /swap, a partition for /home 
, and two data partitions

..
Bret Busby
Armadale
West Australia
(UTC+0800)
..............