Disk cloning utility

The Clone disk utility allows you to clone your hard disk drive by copying the partitions to another hard disk.

Before you start:

  • When you want to clone your system to a higher-capacity hard disk, we recommend that you install the target (new) drive where you plan to use it and the source drive in another location, e.g. in an external USB enclosure. This is especially important for laptops.

    It is recommended that your old and new hard drives work in the same controller mode. Otherwise, your computer might not start from the new hard drive.

    If you clone a disk with Windows to an external USB hard drive, you might not be able to boot from it. We recommend cloning to an internal SSD or HDD instead.

  • The Clone disk utility does not support multiboot systems.
  • On program screens, damaged partitions are marked with a red circle and a white cross inside in the upper left corner. Before you start cloning, you should check such disks for errors and correct the errors by using the appropriate operating system tools.
  • We strongly recommend that you create a backup of the entire original disk as a safety precaution. It could be your data saver if something goes wrong with your original hard disk during cloning. For information on how to create such a backup, see Backing up partitions and disks. After creating the backup, make sure that you validate it.

Please note that after cloning the disk, the used space on the original and destination drives may slightly differ for the following reasons:

  • Acronis True Image excludes certain system files like pagefile.sys, swapfile.sys, and hiberfil.sys from cloning by default.
  • If the source drive has compression and content indexing turned on, this could affect the size of the files on that drive. When cloning, these settings might not be replicated to the destination drive, leading to a difference in used space.