By Ivy / Last Updated May 22, 2020

About system reserved partition

Before you start to move system reserved partition to another drive, you need to know something related to the system reserved partition. By default, this partition contains two important things.

1. The Boot Manager and Boot Configuration Data.

When your computer boots, the Windows Boot Manager starts up and reads the boot data from the Boot Configuration Data (BCD). Then, your computer will boot the bootloader off the System Reserved partition. At last, the Windows will boot from your system drive.

2. The startup files used for BitLocker Drive Encryption.

If you ever decide to encrypt your hard drive with BitLocker drive encryption, the System Reserved partition contains the necessary files for starting your computer. Your computer boots the unencrypted System Reserved partition, and it will decrypt the main encrypted drive and boot the encrypted Windows system.

When to move system reserved partition to different drive?

The system reserved partition contains boot files. You are not willing to move it. But, in the following situation, you are supposed to move the system reserved partition to the hard drive with an operating system.

Situation 1: The system reserved partition and C drive on the different disk.

Sometimes, you may forget to disconnect the other drive when you install Windows 7/8/10. Then, you may find your C drive on disk 1 and system reserved partition on disk 2. To ensure your disk can boot properly, you have to move system reserved partition to your disk 1.

Situation 2: The system reserved partition on the disk experiencing smart error

After you use your disk for a period of time, you may find this disk experiences smart error. And your system reserved partition is on the disk. To avoid this error, you need to move system reserved partition and system partition to a healthy disk.

How to move system reserved partition to another drive in Windows 7/8/10?

Method 1: Move system reserved partition on wrong drive with Disk Management

Whatever problems you encounter concerned with a computer, you may think about Windows built-in tool first. It does not cost you a cent. Now, I will show you how to move the partition with Disk Management.

Start with the specified steps:

Step 1. Create a repair disc. The following operation may cause unexpected problems. Thus, you need to create a repair disc first. Once your computer cannot boot successfully, you can use it to troubleshoot the computer.

Step 2. Create a new simple partition (around 100MB) on the disk 0 with disk management. To open disk management, you can click “Win+R” and type diskmgmt.msc in the run box. Then right-click the unallocated space and choose New Simple Volume. If you do not have an unallocated space on the disk 0, you can shrink partition first.

New Simple Volume

Step 3. Assign a drive letter for your newly simple partition (Z:)

Step 4. Copy everything from the system reserved partition to your newly simple partition (Z:), Including Boot folder, bootmgr, BOOTSEC.BAK

Step 5. Remove the drive letter from system reserved partition on disk 1

Step 6. Mark the newly simple partition as System Reserved

Step 7. Remove the drive letter of your new System Reserved partition, then mark it as active

Step 8. Restart your computer and see if it can boot successfully. If it fails, run Startup Repair.

After it can boot successfully, you are supposed to remove the old system reserved partition on the disk 1.

This method is very useful for people who are familiar with Disk Management and system repair steps. if you are not familiar with these two tools, you can use a disk cloning software like AOMEI Backupper to move system reserved partition.

Method 2: Move system reserved partition to different drive with command line

Except for Disk Management, Diskpart can also help you move system reserved partition to another drive, but this method only work well on Windows 7 and Windows 8.

Now, let's begin the steps:

Step 1. Open cmd as administrator, type the following command and hit enter.

bcdboot C:\windows /s C:

Step 2. Open Disk Management, right-click the C drive and select "Mark Partition as Active".

Step 3. Select the system reserved partition and tap on "Mark Partition as Inactive ".

Step 4. Restart your computer and confirm it can boot successfully.

Step 5. Right-click the system reserved partition and select "Change Drive Letter and Paths", then follow the on-screen instruction to assign a letter for this partition.

Step 6. Right-click the system reserved partition again and tap on "Delete Volume".

Method 3: Move system reserved partition to SSD with AOMEI Backupper

Directly move files or folders from a partition will leave some problems, especially when you copy files or folders from a partition concerned to system related partition.

Here, I will show you an easier way. And it does not cause any problems. Below are the specific steps:

Step 1. Download AOMEI Backupper, install and launch it.

Step 2. Select Partition Clone on the following interface.

Select Partition Clone

Step 3. Select System Reserved partition on the Disk0, then click Next.

Select System Reserved Partition

Step 4. Select the unallocated space on your Disk1. If you do not have an unallocated space, you can resize partition first. After that, click Next.

Select Unallocated Space

Step 5. Preview the Source Partition and Destination partition and click Start Clone.

Preview Partition

Then restart your computer and check if it can boot. If your computer boot normally, you succeeded in moving System Reserved partition to another drive. After that, you can delete the old System Reserved partition to free disk space.


  • To prevent you delete System Reserved partition mistakenly, you need to click Edit Partition (suppoprted by the Professional version )and set Drive Letter as None, then Create the unallocated space as Primary Partition. Only the primary partition can be set up as Active.

    Edit Partition

  • Aside by that, you need to tick Align Partition to optimize for SSD if your destination is SSD disk. This feature can accelerate the reading and writing speed of your disk.

Wrapping Things up

Speaking of moving system reserved partition on wrong drive to another drive, you may feel confused and don't know what to do. This article solves this problem for you and provides you three available solutions.

Also, I want to remind you that system reserved partition on wrong drive is mainly caused by extra device while cloning disk to another disk. Please only keep the original disk and target disk connected to your computer and plug out other device.