If i understand correctly, when the n900 is connected to a pc, it senses that and asks whether to act as mass storage, telling the computer it's a simple flash drive. The vfat partition on /home/user/MyDocs gets un-mounted and presented as that memory
Today, while rummaging for a live cd to rescue a friend's pc (god i hate vista!), i had the idea that good ol' n900 (if i had one) could have a live cd image deployed to that partition (just like making a bootable flash drive), thus becoming a very handy tool for booting a pc into linux
Question: is there any reason this would be a bad idea? I assume that as long as the bootloader on the n900 is configured to ignore it, having another bootable partition than / is not really a problem