Are Datawrites really 4.7GB

cknb · Newbie Joined: 30 Dec 2004 Posts: 15

I have backed up my new dvd's using dvd decrypter and shunk them on full disk mode with dvd2one but when burning with nero 6 it says the disk is too small. I have tried shrinking to 4.2 gb with dvd2one but it still comes out at 4.54 gb. !

Portmac · Posted: Sun Feb 06, 2005 9:08 pm Post subject:

DVD capacities are usually given in billions of bytes, such as 4.7 billion bytes for a recordable disc. Computer files are measured in gigabytes. Unfortunately, both types of measurements are often labeled as "GB." So a 4.5-GB file (4.5 gigabytes) from a computer will not fit on a 4.7-GB disc (4.7 billion bytes), since the file contains 4.8 billion bytes. The Computer sees 1GB as 1,073,741,824 bytes. The disc manufactures see 1GB as 1,000,000,000 bytes. So a 4.7GB DVD disc holds 4,700,000,000 bytes. That divided by 1,073,714,824 (a real GB). =4.37GB of real data storage.

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