Make iso file from cdrom drive
# dd if=/dev/cdrom of=/tmp/target.iso
Make iso file from directory
# mkisofs -o /tmp/target.iso /source_direcectory/
Install hddtemp ...
$ sudo apt-get install hddtemp
Say No if you don't want it runs at boot. then get the harddisk temperature with ... 
 $ sudo hddtemp /dev/sda 
First, install this package ...
$ sudo apt-get install lm-sensors  
Start mornitoring with ... 
$ sudo sensors-detect
This is how to stop Ubuntu for asking for sudo password everytimes.
# sudo visudo 
Then add this line at the bottom of the file
username ALL=NOPASSWD: ALL
 
  