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How to Fix Disk Signature Collision Error in Windows 11/10

Disks are an important part of a computer because they hold the operating system and personal files. Some users have said that their disks are running slower, but it’s not as bad as the Disk Signature Collision error, which makes disks inaccessible. This article is about how to Fix Disk Signature Collision Error in Windows

When you move your mouse over the disk in Disk Management, you’ll see an error message that says, “This disk is offline because it has a signature collision with another online disk.” Any of the disks that are affected will be marked as “Offline.” So, let’s figure out what went wrong! you can visit Microsoft support center for further help.

How to Fix Disk Signature Collision Error in Windows

Using the Built-in Windows’ Automatic Repair

  1. Insert the Windows setup disk into your computer through the CD/DVD drive.
  2. Shut down the computer and make sure that it is completely powered off.
  3. Start your PC by pressing the power button.
  4. When the “Press any key to boot from CD or DVD” appears on the screen, press any key from the keyboard.
  5. Select language and keyboard options. Now select the “Repair your computer” option on the bottom left corner of the window.
  6. Let the Startup Repair scan your computer for Windows installation and after the scan, select your version from the given list.
  7. In the recovery options, select “Startup Repair.”
  8. Startup repair will simply detect and fix any known error in your Windows. This will probably fix the disk offline signature collision error.

Changing the Disk Signature using the Disk Management Utility

  1. Press the “Windows Key + R” to open the Run dialog box; now simply type “diskmgmt.msc” and press the enter key to open the Disk Management Utility.
  2. Locate and right-click on the missing or offline disk.
  3. Select the “Online” option from the drop-down menu.
  4. Windows will automatically generate a new signature for the disk and put it online.

Modify the Disk Signature using Disk Management

  1. Press Windows + R to open Run.
  2. Type services.msc into the search box and press Enter to open Disk Management.
  3. Right-click on the offline disk and select Online from the popup menu.

Change Disk Signature using Diskpart

  1. Search for Command Prompt and choose Run as Administrator.
  2. Type in diskpart and press Enter.
  3. Type in list disk and press Enter to show all the available disks on your computer.
  4. You can see which disk is offline. Then, type in select disk * (* stands the number of the offline disk) and press Enter.
  5. Type in unique disk ID=(New signature) and press Enter. The new signature should be a new ID in hexadecimal. For example, you can set the new id as uniqueid disk ID=BEFBB4AA.
  6. Type in online disk and press Enter.
  7. Type in list disk and press Enter to see whether the disk is online now.

What is Disk Signature Collision

Disk cloning is a fairly common way to upgrade to a bigger hard disk drive these days. Drives are cloned to make a similar copy so that both the original drive and the copy can be used at the same time. Also, the physical hard disk drive is virtualized with the help of many virtualization tools.

The physical hard drives are turned into virtual hard disk drives by virtualizing them, and the existing virtual hard disk drives are used to make copies of several virtual machines. Since these copies are the same, it’s possible that their disk signatures are also the same. The Disk Signature Collision problem can happen when you use two disks with the same signature at the same time.

Disk collisions don’t happen very often because Windows doesn’t let two disks work at the same time if they have the same disk signature. In older versions of Windows, like XP and Vista, the signature collision often went unnoticed because the Windows system would automatically replace the signature of the disk that reported duplicate signatures.

James Hogan
James Hogan
James Hogan is a senior staff writer at Bollyinside, where he has been covering various topics, including laptops, gaming gear, keyboards, storage, and more. During that period, they evaluated hundreds of laptops and thousands of accessories and built a collection of entirely too many mechanical keyboards for their own use.
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