Question : Restore Partition Mac OS X External Hard Drive

To be able to use BootCamp with my Intel Based iMac I was told that I needed to backup, repartition and install (bootcamp told me to do this). I grabbed my TB drive and then ran a Time Machine backup. I then wiped my Mac's HD and partitioned it. Then BEING AN IDIOT I blew away the partition of the external drive holding my backup!

I have seen articles about using TestDisk but it refers me to PDisk which I have no clue how to use.

Can someone please explain, in steps, how to restore the partition to the external drive back?

(the external drive was never formatted, just partition deleted

Answer : Restore Partition Mac OS X External Hard Drive

If ALL you did on the external drive was delete the partition, and IF the partition was formatted in NTFS or FAT32, then Active Partition Recovery can restore it.    The free download will show you what it "sees", but you have to buy a license to actually do the recovery.   [http://www.partition-recovery.com/ ]

Note:   You'll need a Windows PC to do the recovery on ==> you install Active on that PC;  then attach the external drive to it.