My 160Gb Passport was merrily working yesterday except that it appeared to be demounting and remounting on the odd occasion (usual USB bings) - this morning when I mounted it Windows XP recognised it all OK as Drive F: but in explorer it only now shows 10Gb of completely empty space - all my other 40+ Gb of data on the hidden / lost 150Gb has gone.
Since you run XP, first thing I would do would be to check disk management (Right-click my computer> manage> disk management) to see the way the drive is displayed (If it is partitioned).
Then I would try TestDisk, which is a free data recovery software.
Thanks for the reply - Computer management says 2 things:
Main window - E: partition-Basic-FAT32-Healthy(Active) 10.49GB capacity
Under it in Disk1
E:149.05GB FAT32-Health(active)
So 2 conflicting capacities.
TestDisk when running shows 3 areas, 22GB FAT32, 25GB HFS and 100GB HFS. It appears that I can only see 10GB FAT32 on this 160GB drive (in both Windows and Ubuntu).