Had a drive get kicked out of the array last week.  Bought a replacement and while rebuilding it kicked out another drive partway through.  Surprisingly, it continued all the way through, even though everything it was writing was basically garbage.  When it finished I replaced the second drive with an old old I recently removed from my desktop.  It cleared it and formatted it just fine.  I then copied the backup on it.  Now I want to do the same to the drive originally kicked out but can't because it's a mess. 

 

How can I remove disk11 from the array and re-add it and have Unraid format it? 

 

 

Just tried removing disk11 from the array, restarting it, stopping it and readding it.  Close, but now it just wants to rebuild the drive.  I don't want to do that because I know the parity is garbage.  Just want to add it, clear it and format it, so I can copy the backup over.

You should probably run preclear on the disk before you add it to test if there are any problems with it.

 

You don't say what version of unRAID you are on, but since this is in the 5rc subforum I assume it is one of the 5rc. The current version is 5.0.4 and it is not considered a rc anymore so you should probably upgrade when you can.

 

Anyway, to answer your question:

 

I have not done this myself, but I think what you need to do is a New Config without disk 11 so parity gets recalculated against the other drives, then add disk11. If you have already precleared it then it will already be cleared and will only take a short while to format and your array will be available. If it hasn't been precleared then unRAID will clear it, which will take several or many hours depending on the size, and your array will not be available until it finishes.

Started the advice given above.  Rebuilding Parity (minus disk11 -- which will now be placed at the end of the array -- after the new array has finishing rebuilding parity).  Looking good so far.  Thanks a bunch!