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How to Change System Protection Maximum Storage Size for Drive in Windows 10

information   Information
System protection (if turned on) is a feature that allows you to perform a system restore that takes your PC back to an earlier point in time, called a system restore point. This can be handy if your PC isn't working well and you recently installed an app, driver, or update.

Each restore point contains the necessary information needed to restore the system to the chosen state. Restore points are automatically generated when you install a new app, driver, or Windows update, and generated when you create a restore point manually. Restoring won’t affect your personal files in your %UserProfile% folder, but it will remove apps, drivers, and updates installed after the restore point was created.

You can adjust the maximum disk space per drive used for system protection. As space fills up, older restore points will automatically be deleted to make room for new ones.

This tutorial will show you how to resize the maximum shadow copy storage space used by system protection for a drive in Windows 10.

You must be signed in as an administrator to be able to change maximum shadow copy storage size.
Note   Note
Restore points are stored in the hidden protected OS System Volume Information folder in the root directory of each drive you have system protection turned on.

CONTENTS:
  • Option One: To Change System Protection Maximum Storage Size for Drive in System Protection Settings
  • Option Two: To Change System Protection Maximum Storage Size for Drive in Command Prompt






Change System Protection Max Storage Size for Drive in Windows 10 OPTION ONE Change System Protection Max Storage Size for Drive in Windows 10
To Change System Protection Maximum Storage Size for Drive in System Protection Settings

1. Do step 2, step 3, or step 4 below for how you would like to open System.

2. Open the Win+X Quick Link menu, click/tap on System, and go to step 5 below.

3. Open the Control Panel (icons view), click/tap on the System icon, and go to step 5 below.

4. Open the Control Panel (icons view), click/tap on the Recovery icon, click/tap on the Configure System Restore link, and go to step 6 below. (see screenshot below)

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5. Click/tap on the System protection link on the left side. (see screenshot below)

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6. If prompted by UAC, click/tap on Yes.

7. Under Protection Settings, select a drive (ex: C: ) that you want to change the maximum storage size for, and click/tap on the Configure button. (see screenshot below)

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8. Adjust the Max Usage slider to the percentage you want, and click/tap on OK. (see screenshot below)

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Change System Protection Max Storage Size for Drive in Windows 10 OPTION TWO Change System Protection Max Storage Size for Drive in Windows 10
To Change System Protection Maximum Storage Size for Drive in Command Prompt

1. Open an elevated command prompt.

2. Copy and paste the command below into the elevated command prompt, and press Enter. This will show you the current maximum usage size for all drives that have a shadow copy storage space. (see screenshot below)

vssadmin list shadowstorage

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3. Type the command below into the elevated command prompt, and press Enter. (see screenshots below)


vssadmin resize shadowstorage /for=<ForVolumeSpec> /on=<OnVolumeSpec> /maxsize=<MaxSizeSpec>


Note   Note
Substitute <ForVolumeSpec> in the command above for the actual drive letter (ex: C: ) that the shadow copy storage is for. This will be the For volume in the results from step 2.

Substitute <OnVolumeSpec> in the command above for the actual drive letter (ex: C: ) that the shadow copy storage is on. This will be the Shadow Copy Storage volume in the results from step 2.

Substitute <MaxSizeSpec> in the command above for the actual size you want.
  • The MaxSizeSpec value must be 1 MB or greater and must be expressed in % percentage or one of the following units: KB, MB, GB, TB, PB, or EB. If no unit is specified, MaxSizeSpec uses bytes by default.
  • If no value is specified for /maxsize, there is no limit placed on the amount of storage space that can be used.

For example:

vssadmin resize shadowstorage /for=C: /on=C: /maxsize=12GB

OR

vssadmin resize shadowstorage /for=C: /on=C: /maxsize=5%


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4. When finished, you can close the elevated command prompt if you like.


That's it,
Shawn