Can't erase Time Machine partition

[FilipeTeixeira]

So I did something stupid, meaning that I've unplugged an external drive during a Time Machine backup causing the partition with the backup to be corrupted. I can't mount it, erase it, or do basically nothing with it. It's not encrypted, yet, I have no idea of what to do with it.

How can I format this partition? DiskUtil and so on always show "Couldn't open Volume".

 

[chscag]

If you can't do anything with it using Disk Utility, you may have to copy the data off the other partitions on the drive and then just erase the entire drive and reformat it.

 

[FilipeTeixeira]

If you can't do anything with it using Disk Utility, you may have to copy the data off the other partitions on the drive and then just erase the entire drive and reformat it.

Meanwhile I ran a fsck several times which never finished. After a while for some magical reason I was able to format that partition and run Time Machine again.