You'd have several /'s then, I don't think that would be sane (in posix-land).
I don't know what you mean. In linux a path like /f/netsurf is perfectly valid and I use such path every day.
/ <mountpoint> / folder[specifies the root filesystem] [specifies the disk] [specifies a folder on the disk]
That's how it is on FreeMiNT, at least I thought so. Greets, Ole