Problems with External Drive

[Heb1228]

One of my firewire hard drives is giving me problems. I've got this one partitioned into three sections. One partition has been fine. The second partition has reported disk errors in Disk Utility but claims to have repaired the errors.

The third partition is the strange one. Disk Utility is reporting errors but cannot fix them. Here is the dialogue:

Verify and Repair disk “disk2s12”
Checking HFS Plus volume.
Invalid B-tree node size
Volume check failed.

Error: The underlying task reported failure on exit


1 HFS volume checked
1 volume could not be repaired because of an error

Techtool Deluxe doesn't seem to work on external volumes (at least I haven't been able to get it to...) so I'm not sure I have any option short of buying a disk repair utility as far as saving the data. However, the data is not essential, and my main concern is that the drive itself is failing and not just that the file system has been corrupted. Anyone got any ideas on fixing the partition or whats going on with the drive?

 

[Heb1228]

Here's a bit of an update and a thread bump combined into one. I went ahead and erased the data on that partition and zeroed the data. Everything's been acting normal so far.

I wanted to test the drive with TechTool Deluxe but under the menu where you choose which volume to test, only the internal drive is listed. Is Techtool unable to test external drives? I can't find anything about this on their website.