What drive are you looking to identify, and for what purpose?
You can easily see what partitions are mounted on most Unixes using a command similar to 'mount'. In the case of Linux (with the /proc system in place, at least, which should be true on any general-purpose system), you can read a file called /proc/mounts that gives you that information as well.
Are you looking for the partition device name, the DOS-compatible partition number, the drive's hardware serial number, or what?
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