[blue68f100]

If you have access to the web GUI and every thing is good except a broken array replacing the drives will allow the upgrade. Below is instructions.

If you want to upgrade drives. You need to turn off AV and stop all Scheduled Snapshots First. If you DO NOT DO THIS, these units complain badly corrupting the OS. It will drop you in recover mode where you have the option to do a clean install. The problem is that it WILL NOT over write some system files, so it not a clean install as indicated.

If you have all of the AV and Snapshots off you can power down and remove drives 2-4 and install a new hd in slot 2. Then reboot the snap, after about 5-6 min you will see the new disk led lite for about 30 sec. This is where it transfers the OS to the new HD. Power down agian, move drive 2 to #1 position. Install new drives for 2-4, reboot and after the the 5-6 min you will see the OS transfer to the remaining drives. (You do not want to hot swap drives on a OS transfer only. Doing so will force it into a resync if it's capable of.) Once up from the Maintance menu you can run reset to factory. After the required reboot, use the clean install option.

Now the procedure posted by Phoenix above will drop you into the recovery mode screen. (You need monitor and keyboard attached to do this.) From recovery mode you can do a clean install of the OS, the problem is that it does not wipe out user config info. So if one of these files are corupted you do not clean it up. Andy knows the debug cmds to force it into recovery mode. And which files that need deleted to have a clean install. I will not post these cmds, not for the normal user, and if you have a problem, in most cases you do not want to do an upgrade till the problem is corrected.

When I do this I have a HD That has a clean install, and the init setup has not been run. This HD is stored in a safe place just encase I have to do clean install.