Ok. the /etc/fstab file contains a description of how to mount filesystems to the operating system. Unlike windows you can not insert a floppy and then view it via a file browser. You need to mount the floppy or cdrom disks first. And before you remove the disks you need to unmount the filesystems.
/dev/hda5 /home ext2 defaults 1 2
In the above line
/dev/hda5 the partition containing a filesystem
/home - A directory which is called a mount point. Where the filesystem is attached to the tree.
/mnt/floppy is just a directory not a partition.
ext2 is the filesystem type. i.e. how the partition is formated.
defaults - options on how to mount the filesystem. i.e read / write etc. See man pages mount and fstab for info.
1 2 are special numbers for backups and for performing a filesystem integrity check.
FYI the other lines in the /etc/fstab file.
The /proc directory contains virtual files that are windows into the current state of the running Linux kernel. This allows the user to peer into a vast array of information, effectively providing them with the kernel's point-of-view within the system. In addition, the user can use the /proc directory to communicate particular configuration changes to the kernel.
/dev/pts - psuedo terminal slave.. without it, you wouldn't have a command line with terminals, etc. Read more here: http://www.linuxinfor.com/english/man4/pts.html
Its impolite to bump your thread < 24 hours.