This is basic stuff. I’m writing this article because all major search engines are spammed with ISO articles so that I was unable to find the command to use. So, here it is: mount -t udf <filename.iso> <folde or mountpoint>. Simple, right? Suppose you need more mount (command) options, you could go like this: mount -o loop -t udf <filename.iso> <folde or mountpoint>.

Example: mount -o loop -t udf windowsxp.iso windowsxp/

Also, you might want to see the UDF page on Wikipedia to see if your Linux distro has native support for this format. By typing

‘uname -a’

you can see the version of the Linux kernel (am I wrong?) and compare it against the table on that page. I hope this helps!