It might be a problem with your external harddrive (unlikely) or with the enclosure (more likely).
You can try using a different eSATA cable (this once worked for me - don't know why). Can I assume that when you boot, you don't get the message saying "this device works with the PVR" ?
If a different cable doesn't fix it, I would invest in a new enclosure and swap the drive and see if it comes up. In theory, if the external drive is still ok, you should be able to access all the programs as the index is still intact.
If swapping the enclosure doesn't work, and you really want those recordings, you can then try to clone your disk to a new one and try that one.
You can try using a different eSATA cable (this once worked for me - don't know why). Can I assume that when you boot, you don't get the message saying "this device works with the PVR" ?
If a different cable doesn't fix it, I would invest in a new enclosure and swap the drive and see if it comes up. In theory, if the external drive is still ok, you should be able to access all the programs as the index is still intact.
If swapping the enclosure doesn't work, and you really want those recordings, you can then try to clone your disk to a new one and try that one.