On Aug 2, 2011, at 1:04 PM, Tamas Rudnai wrote: > Is there any backup software like [Apple's time machine] available =20 > to Windows and Linux? I think it requires OS hooks to efficiently notice that files have =20 been changed. Incremental backups without OS support are rather =20 painful. The size of todays disks, and the way people/programs organize (or =20 not) their file systems, and the way backup programs are structured, =20 make it pretty easy to think you're doing adequate backups, but =20 somehow miss something important. The latest external drive I bought =20 to backup the family computers cheerfully offered to backup =20 "documents, pictures, and music"; I hope it did what I expected it to =20 do :-( What happened to the nice logical directory hierarchy I tried =20 to set up? Sigh. BillW --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .