Stephen Liu wrote:
> unmount  /dev/hdb  is not in the fstab (and you are not root)

OK, your CD-ROM is /dev/hdb, but your fstab only mentions /dev/cdrom. 
If you edit your /etc/fstab file, and change /dev/cdrom to /dev/hdb,
then mount/umount will work properly.

> symbolic link files
> ln -s  /dev/hda5  /dev/cdrom
> and
> ln -s  /dev/hdb   /dev/cdrom
> already exist

Can't be.  There can only be one file /dev/cdrom, and it sounds like
it's pointing to /dev/hdb

> Kindly advise.  Also what is the last 2 lines represent for

/proc is the kernel proc(ess??) filesystem.  the files aren't real,
they're virtual files that let you read kernel settings/conditions. 
Some of them let you tweak the kernel's settings, too.

/dev/pts is another virtual filesystem that implements UNIX 98 pty's.  I
honestly can't tell you the differences between UNIX 98 pty's and the
older /dev/ttyp's, except that pty's are created as they are needed, and
discarded when they are not.  The kernel decides how many can be used at
once.  pty's are virtual terminals, used by telnetd, x terminal
emulators, and the like.

MSG


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