Clonezilla

The Free and Open Source Software for Disk Imaging and Cloning
Clonezilla Live Doc
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Save disk image : Save 1st disk (sda) as an image on 2nd disk (sdb) (Step by step)
  1. Boot the machine via Clonezilla live
  2. The boot menu of Clonezilla live
  3. Here we choose 800x600 mode, after pressing Enter, you will see Debian Linux booting process
  4. Choose language
  5. Choose keyboard layout
  6. Choose "Start Clonezilla"
  7. Choose "device-image" option
  8. Choose "local_dev" option to assign sdb1 as the image home
  9. Select sdb1 as image repository, then choose "savedisk" option
  10. Input image name and select source disk
  11. Clonezilla is saving disk image (sda) to the partition of 2nd disk (sdb1)
Boot the machine via Clonezilla live
In this example, the machine has 2 disks, 1st disk's name is sda (device name in GNU/Linux), 2nd disk's device name is sdb. The size of disk sda is 8 GB with Ubuntu Xenial (16.04) installed. There are 2 partitons (sda1, sda2, sda5) on disk sda as shown in the following:


Once you have the bootable Clonezilla Live CD/DVD or USB flash drive, you can boot the machine you want to clone via Clonezilla live. Remember to use the Clonezilla live CD or USB flash drive to boot the machine. For example, if you have Clonezilla Live in USB flash drive, you have to boot it via USB device (Ex. USB-HDD or USB-ZIP). If necessary, you can set the first boot priority in the BIOS as USB-HDD or USB-ZIP so that it can boot Clonezilla Live from your USB flash drive.
Here we take CD as an example. You can either set CD as first boot priority in machine's BIOS like this:


Or by pressing a hotkey (e.g. Esc, F9 or maybe F12) when you boot the machine, you will see the boot menu of BIOS like this:


Check your motherboard manual for more details about how to boot your machine via CD.

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