This is probably trivial to check using cfdisk on a UDF-formatted CD/DVD/Blu-Ray, but I have neither of them at hand.
I have created an UDF formatted partition on a USB hard drive to share data between Linux and Windows computers (FAT doesn't handle 4GB files, NTFS access rights support is not stable under Linux). I have only one problem now - Windows refuses to mount the partition as the file system type id is set to '83' ('Linux'). I have looked quite extensively and can not find what number should I put there?
(follow-up: "With what tool should I format a hard drive as UDF?")