Without wanting to go into the details of a really boring sob story, I have finally reached the fourth stage of grief and accepted that the data on my disk twelve is irrecoverably corrupted, so time to move on. Even with the drive removed, replaced, location swapped, rebuilt and the array run in emulation, and all permutation thereof, the files are visible, but read/write is impossible. New permissions change nothing, and those files are undeletable. What I would like to do is just yank the drive, lose the files on that disk, and rebuild the array, while also not affecting the files on the other disks. How might I go about this?