I recently started to use Foobar because it was recommended for use with the Audiolab 8200CDQ. I started to get error messages reported (something about failed writes to the ext HDD) and then the drive became inaccessible. The drive was inaccessible to three windows PCs running Xp - 7) and eventually it was reported as being unformatted. I have had to reformat this drive which contained over 1TB of wav files (not all backed up unfortunately). It seems that it occurred when I started to use Foobar and I am wondering if this is pure coincidence or if there is any history of this type of thing with Foobar? Any informatio gratefully received!
foobar2000 can't cause problems you describe. If it's a 2.5" drive that takes its power from the USB port it's important to have a high quality cable. If the drive loses power at a bad moment its file system can become corrupted. Other explanation is defects in the drive. You should check the drive's condition with manufacturer's tools or at least with chkdsk.