I know that to verify a proper BIN file, you need to see if the file size in bytes, when divided 2352 is an integer. I'm also pretty sure that a true iso isn't subject to this divisibilty rule. My problem is this: I have a file that is exactly 740,294,656 bytes. When I tried to burn it with NERO, it said my 700MB CD-R was too small, it need 706MB. So I go Alcohol and, it wouldn't mount it saying that it was corrupt. At this point I decide to give up - thinking I have a busted ISO, but out of curiosity I use the division rule (2352) to no avail. I then tried dividing by 2048 and boom I got 361472, obviously more than the 333,000 or so sectors on a CD. After this I started messing around with settings, changing the file extension to .BIN and creating cue files with differnt modes and sector sizes, but nothing seems to work. Has anyone encounter this? Is it just dumb luck that my busted ISO is divisible by 2048? Any tips?