Ok I have an HDD that suddenly failed to boot in AHCI mode; so i switched it to iDE mode and it booted fine.
Now however after trying to repair the disk with gparted (zeroing data as was advised) it gives me read/write MBR errors and wont show up for me to partition/erase the MBR data.
Any ideas.
I have a bootable usb key to fix it.
Cheers
MT