I'm about to upgrade from 10.5.8 to 10.6 (Snow Leopard). I intend on backing up applications, documents, downloads, and other files to a Mac formatted external USB harddrive.
Recently, I attempted to copy a VMWare Fusion created virtual machine to the drive, and then from that drive, move it to an Ubuntu host. The virtual machine file was actually a package, and within that package, files were given restrictive permissions. In other words, many files were only readable by the staff group and not the everyone group. So, the result was that the Ubuntu machine could not open the virtual machine until I'd taken the files back to the Mac, then changed the permissions so that "everyone" could read the files. I've seen similar behavior on Windows machines that are part of a domain with encrypted/protected drives. These experiences make me wonder, is it ok to back-up to this Mac formated drive or should I use a another harddrive that is FAT32 formatted so that the permissions aren't restricted?
I plan on doing a clean installation, complete formatting, etc. not an upgrade. I come from Microsoft's world and haven't quite gotten used to the idea that an operating system plays nice on upgrades.