Partition Magic - Partition Manager Software

Extend partition with one step
Resize/Move partition without data loss.
Create, delete and format partion with simple steps.
Copy partition and disk to transfer data with ease. Support disk and partition size larger than 2 TB. Keep your data safe even in case of power outages or hardware failure.
Partition Magic - Partition Manager Software buynow download

Setting active partition

  • If you have several primary partitions, you must specify one to be the boot partition. For this, you can set a partition to active. A disk can have only one active partition.

    To set an active partition:
    • Select a primary partition to set to active from the list in the Acronis Disk Director Suite main window.
    • Select Disk - Advanced - Set Active or a similar item in the Advanced sidebar list or by clicking Set Active on the toolbar.
    • By clicking OK , you'll add the pending operation of setting active partition.
  • The new partition structure will be graphically represented in the Acronis Disk Director Suite main window.

    The partition will be marked Act in the Flags field. The primary partition is also marked Pri , so the Flags field will contain Pri, Act.


    • Before you make a partition active, you must make sure it is formatted and contains an operating system. Otherwise your PC will not boot from this partition!
    • If you set a partition to active and there was another active partition on a disk, it will be unset automatically. This also might prevent your PC from booting.
    • Setting an active partition in Windows 95/98/Me can change the order of letters assigned to other partitions. As a result, some shortcuts might stop working. A detailed discussion of partition letter assignment rules for various operating systems appears in Create a new partition.