Storage HDD on USB wont boot? - FIXED

[cpcnw]

Hi,

All of a sudden I had a problem rebooting [halt at cursor] so I removed the USB disc connector,
removed the disc from disc manager and did an 'fsck -t ufs -y /dev/ufsid'

After several runs it seems the disc has some bad blocks etc

So, I took another HDD out of another box, added it, formatted it and can see and write to it.

However, N4F wont boot. If I unplug the disc, then boot, then plug in, then retry the mount point
error - the disc is there and is use able?

Have tried two different USB disc caddies and this will be the second disc I have tested.

Have tried different USB ports.

When added from running state there is no problem. When rebooted there is no boot up
just a flashing cursor?

Anyone seen anything like this?

EDIT: Somehow the BIOS had reset itself and box was trying to boot to USB [which is just storage]