Move System Reserved Partition to Another Drive Safely

February 1, 2019

System reserved partition is on the wrong disk. Learn to move system reserved partition to another drive in Windows 10/8/7.

When do you need to move system reserved partition?

In a rare case, you may find system reserved partition is on the old hard disk drive (HDD) after cloning HDD to solid state drive (SSD). You can still boot from the SSD while the old HDD is plugged in.

System Reserved Partition

The problem is that you probably want to wipe the old hard drive and make it just as a data drive. If your original HDD is failing, then you’d better transfer the system reserved partition to the new drive as soon as possible.

How to move system reserved partition to a different disk?

System reserved partition contains boot files. It is a little tricky to move it and make sure Windows detects it. You need to follow this guide step by step to avoid errors.

1. Create a system repair disc just in case Windows cannot recognize this moved system reserved partition.

2. Create a new partition on the SSD drive with 100MB space or larger with Disk Management. To open Disk Management, you can press Windows + R and then type "diskmgmt.msc".

3. Assign a drive letter (for example Z:) to the system reserved partition so you can open it in Windows File Explorer.

Copy everything from the system reserved partition to the newly created partition. It should include Boot folder, bootmgr and BOOTSECT.BAK.

4. Mark the new partition as "System Reserved"

5. Remove the drive letter from the new system reserved partition and then mark it as "Active".

6. Then you can restart your computer to see if it can boot successfully.

7. If it fails to boot, you can use the Windows system repair disc to perform Startup repair, and then it will make Windows detect the new system reserved partition.

When it starts successfully, you can safely remove the old system reserved partition. This method may take a lot of efforts and it is hard to operate for those who is not familiar with Disk Management and system repair steps. If that is your case, you surely want to a simpler solution.

Clone system reserved partition to SSD

File level copy might leave some problem behind especially when you handle system related partition. Therefore, it is recommended to use free Partition manager software AOMEI Partition Assistant to clone the partition. With it, you can move system reserved partition to another disk effortlessly.

To clone system reserved partition:

1. Download AOMEI Partition Assistant Standard (free edition) and launch it.

2. Right click on the old system reserved partition and select Copy Partition.

Copy Reserved Partition

3. Select Sector by Sector Copy and click Next.

Sector by Sector Copy

4. Select unallocated space on the SSD as the destination location to receive the system reserved partition. If there is no unallocated space, you can shrink a partition by clicking Resize Partition.

Select Unallocated Space

5. The next screen, you can adjust the size of new system reserved partition and other parameters. Set the drive letter to None.

Set Drive Letter As None

6. Click Apply to apply these changes.

Apply Copy Reserved Partition

After that, you can change the partition label to System Reserved and set the partition as "Active". The system reserved partition has to be a primary partition, if your new system reserved partition is a logical drive, you can convert it to primary partition without data loss first. Then, you have successfully moved system reserved partition to another drive. Besides, if you still have unallocated space on the hard drive, you could merge partitions with the unallocated space to extend the partition you want to extend.