My computer is a G4 MDD PowerMac running Tiger 10.4.9. I have two internal hard drives, the original 80 gig and a Seagate Barracuda 160 as a backup drive. I use Drive Genius to backup my stuff. Yesterday I made some changes in my itunes folder and did some damage to some of the song files. So I went to my backup drive to replace the files. I had windows open for both drives and I noticed that when I put the itunes folder in the trash from my main drive, the folder from the backup drive was removed also. I tried this with several folders and files. Whatever I deleted from my main drive, was deleated from my backup drive also. Yet when I opened the trash, there was only the one deleted file, not two. I thought each drive was autonomous. And ideas?