Club CDFreaks - Knowledge is Power - View Single Post - CloneCD hangs PC with PX-750A and DVD+R DL

madbrain · 10-01-2007

rolling56,

DVD burners don't have error checking built-in during burns. Just because a burned disc is readable doesn't mean its content is identical to the source.
Indeed, the burned disc needs to be read back and compared with the original. However, when using the on-the-fly copy option, there is no original to compare to. The burning software needs to hash the original as it reads it, then read the burned disc after it's done, and compare the hashes.
CloneCD doesn't do any verification while doing on-the-fly copy, unfortunately.

10-01-2007	#34 (permalink)
madbrain CD Freaks Member Join Date: Jun 2004 Posts: 109	Re: CloneCD hangs PC with PX-750A and DVD+R DL rolling56, DVD burners don't have error checking built-in during burns. Just because a burned disc is readable doesn't mean its content is identical to the source. Indeed, the burned disc needs to be read back and compared with the original. However, when using the on-the-fly copy option, there is no original to compare to. The burning software needs to hash the original as it reads it, then read the burned disc after it's done, and compare the hashes. CloneCD doesn't do any verification while doing on-the-fly copy, unfortunately.