I have a TB external HD that had 2 partitions on it, one for my media and one for my Time Machine backup. Earlier today I took 50 GB off of the Time Machine backup so I could backup the information on my PS3 to install Linux. The backup and restore of the PS3 data went fine. When I was installing Linux, I did NOT unhook the drive from the PS3, but when the destination for the install came up, I choose the PS3 "Other OS" partition (/dev/ps3da) and I unchecked anything that had to do with the external. When I plugged my drive back into my computer, I got an error that said "Disk Insertion: The disk you inserted was not readable by this computer." I then had the choice to "Initialize, Ignore, or Eject." Initialize brings me to the Disk Utility where is shows my drive as being unformatted. Is there anything I can do to recover my partitions?