What is the use of a read-only partition? I am particularly interested in gpt-formatted disks. If the partition is read-only, then data cannot be written to it. If we're reading data from it, then how did the data get there in the first place since its read-only? This can only imply that the data was written to the partition before formatting it and making it read-only. But if that is so, then formatting after writing the data would wipe out the data.
So, of what use is a read-only partition?