Ok, it seems i've been nailed by the installation bug too.
In the link above they mention this
Ran grub2-install --force /dev/sda11 and can now chainload to grub2 bootloader
on sda11. Note that --grub-setup=/bin/true has to be omitted.
How can I do this. Do I have to download the live cd and try booting with it?
Also found this:
Boot sometimes fails when installing to a pre-existing partition layout with complex boot configuration (e.g. software or firmware RAID-1)
link to this item - Bugzilla: #737508
The safest workaround for the issue is to resize the first disk on the partition so that there is more empty space in front of it. A very small change will be sufficient - just having the partition start at 1MiB rather than 32KiB should suffice
Not too keen on resizing partitions.
What can I do to get my computer back?