Automatic partitioning is safe and fast for standard installs—choose it if unsure. Manual partitioning is needed if you dual-boot, use LVM, or want separate filesystems for different partitions. Plan ...
But typically, all you will have to do should something unexpected happen is go to the Settings menu and turn off the Linux partition. That will remove all traces of the errant Linux installation, and ...
I've been using mandrake on a 20gb partition of my 40gb HD and Win2k on my other partition. I've always been able to choose between the 2 from the linux boot screen. Once I upgraded my 2k to XP it ...