On Tue, 14 Apr 2020 at 18:32, B D <dzidek23@gmail.com> wrote:

I wonder if your "corrupted" drive is a hibernated (locked) ntfs partition... in windows 10 when you "power down" the OS it hibernates more that switches off. Try to load hard drive pulled from windows machine and you are more than likely to find "corrupted"/inaccessible filesystem.

The corrupted partition is where the EFI boot code sits, that is FAT not NTFS. That said I did disable Windows fast boot (or whatever it is called) as I know that doesn't play nicely with dual boot because, as you say, it leaves the main Windows partition locked.

I'm really interested what did you had to do to fix the EFI boot?

Wiped the disk and let Ubuntu do its thing.

From what I read, if I now reinstall Windows it'll mess up grub (to be expected) but aside from that (which grub-repair will fix) that will allow dual boot. But I don't have sufficient need for dual-boot that I can be bothered now I have a working Ubuntu install.

For the num lock issues have you tried to update the BIOS to the latest version?

Yes, and sadly no option, which seems an odd omission but there you go I have opened a support ticket with ASUS, I'm sure they can tell me if I have missed something.. Mark -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER