Recently, we cloned a hard disk using
When we booted into Windows, the new drive was not visible.
After checking with the disk utilities, we got the following informative message:
The disk is offline because it has a signature collision with another disk that is online
To resolve the issue, we used
diskpart, press the key combination
R which will pop up the
diskpart in the input box and hit the
A new terminal window will appear.
Using that we identified the two disks and changed the label for the second one.
list disk to get the list of disks.
DISKPART Microsoft DiskPart version 10.0.14393.0 Copyright (C) 1999-2013 Microsoft Corporation. On computer: BYTEFREAKS-NET DISKPART> list disk Disk ### Status Size Free Dyn Gpt -------- ------------- ------- ------- --- --- Disk 0 Online 931 GB 0 B Disk 1 Offline 465 GB 0 B
select disk 1 so that we could process the disk 1 that was
offline and using
uniqueid disk we got the signature of the disk.
DISKPART> select disk 1 Disk 1 is now the selected disk. DISKPART> uniqueid disk Disk ID: 09FC13CB
Set the signature of the disk to a random value other than the one that it already had using the command
uniqueid disk ID=FFAABBCCDD
DISKPART> uniqueid disk ID=FFAABBCCDD DISKPART> uniqueid disk Disk ID: FFAABBCCDD
The random value must be 8 characters long and each character must be a value between 0-9 or A-F.
Restart the machine to get both disks running.