Issues with bringing a cloned disk online

When you clone a disk from a backup of a Windows 2016 server and attach it to that same server, you may encounter problems bringing the disk online through File and Storage Services in Server Manager.

If you bring the disk online through Disk Management, the problem is avoided.

Complete the following steps to bring a cloned disk online.

1. Connect to the application instance.
2. Bring the disk online through Disk Management.
   1. Bring up Computer Management (from the Control Panel), and click Disk Management.
      Figure 1. Disk Management
      
      
   2. Right-click each offline disk; then click Online.
3. Bring the disk online through File and Storage Services (from Server Manager) by removing the read-only attribute on the disk.
   1. Run command shell as administrator.
   2. In the command shell, execute the following command to start the Disk Partition application:

      diskpart

   3. In the Disk Partition application, execute the following command to check the disks that are currently available:

      list disk

   4. Locate and select the newly cloned disk (it usually has the highest disk number and free space equal to its size):

      select disk <x>, where <x> is the disk number as displayed by the list disk command.

   5. Remove the read-only attribute from the disk:

      attributes disk clear readonly

   6. Refresh File and Storage Services

The disk should be online.