External won't mount after defrag

Hi;

I have a LaCie 1TB ESATA drive which I use(d) with SilverKeeper 2.0.2 to do daily back-ups and some archiving.

After I defragged the drive using Drive Genius 1.5.3, the drive no longer mounts. In Disk Utilities the device appears normally but the volume (unpartitioned) is grayed out.

I don't want to lose the data by reinitiallizing. Any suggestions?

I'm using a G4 with MacOS 10.4.11.

Thanks;
Chris

Movies 24h | Dmart.vn