it is possible to make a full disk image with running ubuntu with following command:
dd if=/dev/sda of=/image_name
After i make it, how can i restore that image on a crushed system?
Disk Image – Making Full Disk Image with DD
14.04backup
Related Solutions
It's Clonezilla Live: http://clonezilla.org/
The tutorial for Clonezilla can be found here.
Applause for wanting to make a System Backup!
The easiest way to accomplish this is with a bootable USB stick and an external USB HDD using CloneZilla Live:
- Download and "Burn" the CloneZilla Live ISO (Instructions are provided over there)
- Boot the CloneZilla Live USB stick
- Use the Save Disk Image system
- Insert the external HDD when CloneZilla asks you to do so:
- Wait until done.
The best way to accomplish this is to copy the CloneZilla ISO to your existing system and just boot it from grub on your own system (one less USB Stick that you can lose) and follow the same steps as above. (CloneZilla Live is the very last example in that answer).
Best Answer
Boot from the live cd. Mount your destination media to (say) /mnt.
To restore:
The destination drive should be the same size or bigger than the original.
A better way is using tar.
Mount the source to /mnt, mount the destination to /home (say)
This can then be restored to any size drive:
(After mounting source to /home and destination to /mnt.)
Then just install grub.