How do I repair my software RAID5 disks?
Solution 1:
It looks a bit like you managed to knock off all four drives from the array? I think you get some kind of achievement badge. :-)
You should be able to just re-add them to the array:
sudo mdadm /dev/md1 --re-add /dev/sd[bcde]
Then watch cat /proc/mdstat to see it rebuild them.
See man mdadm for more.