Wednesday, January 15, 2014

Disk is write protected

Have you received the error "The disk is write protected"

I've come across this error when cloning a volume snapshot from our Equallogic SAN.  To overcome this issue and allow the drive to be usable again you must clear the readonly attribute of the disk.

1. Open a Command prompt by clicking Start, typing command, and clicking Command Prompt.
2. Type diskpart and press Enter.
3. Type list volume and press Enter.
4. Type select volume #, where # is the number of the drive that's giving you the "write-protected" error
5. Type attributes volume clear readonly and press Enter.
6. Type exit and press Enter.

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