I have removed a backup hard drive but every time I start up it is looking for it to mount how can I stop this

The OS is called Ubuntu, not Ubuntu. Look at the top of this page. .....

What is the output of :

lsb_release -a; uname -a; cat /etc/fstab

Thanks

$ lsb_release -a; uname -a; cat /etc/fstab
LSB Version: core-2.0-ia32:core-2.0-noarch:core-3.0-ia32:core-3.0-noarch:core-3.1-ia32:core-3.1-noarch:core-3.2-ia32:core-3.2-noarch:core-4.0-ia32:core-4.0-noarch:core-4.1-ia32:core-4.1-noarch:security-4.0-ia32:security-4.0-noarch:security-4.1-ia32:security-4.1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 14.04.1 LTS
Release: 14.04
Codename: trusty
Linux bob-desktop 3.13.0-44-generic #73-Ubuntu SMP Tue Dec 16 00:23:46 UTC 2014 i686 i686 i686 GNU/Linux
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc nodev,noexec,nosuid 0 0
# / was on /dev/sda1 during installation
UUID=a0833ad3-f9a6-4f3a-accb-909f0b814b3b / ext4 errors=remount-ro 0 1
# swap was on /dev/sda5 during installation
UUID=b4b952e2-ec75-4c88-b51f-7f67c794a2cd none swap sw 0 0
UUID=4818bcbe-5b1f-47c0-942b-9530e0f00648 /media/bob/my_data ext2 defaults 0 2

 /media/bob/my_data ext2
is the one not there anymore

Then comment out the line. You have added the line to mount the USB drive so it is now expected each boot.

Oh ok that was some time ago. How do I comment out the line.

I don't think that is a function here.

This is all your posts.
https://answers.launchpad.net/~ybigpatty

I KNOW I never threatened to ban anything because it's not something I am able to do. I am a poster on hee just like you. You are either mistaking me for someone else or just talking garbage.

Sorry. Wrong post completely. Sincere apologis.

If you run:

sudo geddit /etc/fstab

You can add a hash to the left of the line and it won't be processed

gedit not geddit

Typo

sudo gedit /etc/fstab
ok so this ^
then add a hash to the left of what line ?

Change

UUID=4818bcbe-5b1f-47c0-942b-9530e0f00648 /media/bob/my_data ext2 defaults 0 2

To

#UUID=4818bcbe-5b1f-47c0-942b-9530e0f00648 /media/bob/my_data ext2 defaults 0 2

Too obvious?

Obvious, only if you know what your doing lol
I know it as the number sign or the pound sign
Thank you it worked.