Better support writable boot devices with read-only switch
We should better support USB sticks and SD cards when their read-only switch is set to disable writes.
|Bug #6610: Tails Installer should not list read-only media||Confirmed||
|Bug #6611: The Greeter should not allow enabling read-write persistence on read-only media||Confirmed||
|Bug #7131: Incremental upgrades: test if the USB stick is read-only||Confirmed||
Related to Tails -