[gish]

Hi Phoenix32, thanks for your tips, I managed to fix my particular problem by inserting disk0 from the working 4500 into the broken 4500 and booting from that.

From reading other posts of this forum, I understood that the firmware is stored in a (possibly Raid1 array) partition across all disks so it must have rebuilt the array. I then returned the good disk back to the working 4500, shuffled the drives in the bad 4500 and sloted the original first disk into the last slot, and it booted up fine (and I presume rebuilt the guardian os firmware partition on that last disk). It did ask me to re-enter the license key each time I did this, luckily I had these handy.

I still think it's rediculous that it's not possible to download the firmware for your particular device given that its running some form of linux and presumably contains a fair amount of GPL software, has anyone every taken Overland Storage / Adaptec to task over this?

regards,
Tristan