How to set system partition active or inactive? If users accidentally set a wrong partition as active or inactive, they can follow this article to set the correct partition as active or inactive.

About Set Active/Inactive

When users install system on a hard drive, there will be a system partition. If system partition is not set active, Windows will be unbootable, as only setting the system partition active can MBR visit the very partition to find Windows boot programs BOOTMGR and Boot Configuration Database.

Normally, if users have added a new disk to computer and finished migrating OS from the original disk to the new one, user need to set boot partition on the new disk as active and then set it to be the first boot device in order to make computer boot from it successfully.

Note: If users use Migrate OS to SSD/HD function of MiniTool Partition Wizard to transfer OS to another drive, the software will set the new drive as active automatically at the end of OS migration.

Now, the question comes – how to set active/inactive manually when necessary? We’ll introduce the method of using Set Active/Inactive in MiniTool Partition Wizard.

Here is the step-by-step MiniTool Partition Wizard tutorial.

How to Set Active

Note: The following operations are completed with MiniTool Partition Wizard Bootable Edition. users can use MiniTool Partition Wizard’s Bootable Media Builder feature to create bootable CD/DVD/USB flash drive or build an ISO image of a bootable disc. After that, use the bootable disk to start computer to get the main interface of MiniTool Partition Wizard Bootble Edition.

Step 1. Select the partition users would like to set as active and choose Set Active from the left action panel.

Kindly Remind:

  • Set Active is available only on MBR disks, and only one primary partition on an MBR disk can be set active.
  • One disk can hold at most 1 active partition.
  • If users set the wrong partition as active and change the original active partition into inactive, they will be blocked out from Windows system.

set active

Step 2. Click on Apply button to perform pending operations.

click Apply

Step 3. Choose Yes from Apply Changes prompt window to confirm.

click Yes

Step 4. Click on OK button when the Successful prompt window shows up so as to end this task.

click OK

How to Set Inactive

The process to set inactive is very similar to set active.

Step 1. Select the partition users would like to set as inactive and choose Set Inactive.

set inactive

Step 3.Click on Yes button in Warning window to continue.

read the warning and click Yes

Step 4. Click on Apply button to perform pending operations.

click Apply

Step 5. Choose Yes from Apply Changes prompt window to confirm.

click Yes

Step 6. Click on OK button when the Successful prompt window shows up so as to end this task.

click OK

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