How to disable read-only mode on a hard drive in Windows 11
How to allow files to be written to a disk. How to open a hard drive.
Disk Management. Right-click and select "Offline" and then "Online."
Go to "This PC."
Right-click the read-only drive and select "Properties." On the "Security" tab, check "Read and Write" in the "Allow" column. Click Apply.
Registry Editor
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies
If this "Storage Device Policies" key doesn't exist, you need to create it: right-click "Control" to create a key and name it "Storage Device Policies."
Double-click the WriteProtect key in the right pane to open its properties. Change the value from 1 to 0.
Terminal
diskpart
list disk
select disk # (disk number to clear read-only)
attributes disk clear read-only
exit
diskpart
list volume
select volume (volume number)
attributes volume clear read-only
exit