2,352 bytes/sector = data wrapped in Sync, Header, Subheader, EDC and ECC. See diagram below:
If you burn it with the wrong sector size, your burner will either reject the burn, or you'll end up with a coaster if the burn goes through. Therefore, you should use CDmage to find out the sector size of your image file.
When you burn a 2,048 sector size ISO, your burner automatically generates and adds in the overhead mentioned above.
(Edited by MasterAkumaMatata at 11:39 am on Nov. 5, 2001)