Actual Size of a DVD
A month ago, was tryin to burn a DVD to its maximum extent. Had a Sony DVD which claims its capacity to be 4.7GB. But when I tried burning data worth 4.7GB it said, please insert a disk with 4.7GB of capacity.
I kept on reducing it by 100 MB i.e., 4.6GB, 4.5GB but in vain.even 4.4 GB didnt work. Also, it was giving me confused error messages about DVD+R and DVD-R formats.
After a bit of googling, I found that the 4.7 GB of a DVD disk is actually 4.7 * 10^30. That boils down to 4.3 * 2^30 i.e., 4.3 GiB. When i reduced it to 4.3GB, everything went well. Just thought of sharing this info so that you don't face it further. =)
I kept on reducing it by 100 MB i.e., 4.6GB, 4.5GB but in vain.even 4.4 GB didnt work. Also, it was giving me confused error messages about DVD+R and DVD-R formats.
After a bit of googling, I found that the 4.7 GB of a DVD disk is actually 4.7 * 10^30. That boils down to 4.3 * 2^30 i.e., 4.3 GiB. When i reduced it to 4.3GB, everything went well. Just thought of sharing this info so that you don't face it further. =)
Labels: Info
posted by Unknown at 1:06 AM
3 Comments:
The problem arises due to the values of 1 GB considered by different hardware manufactures and the OS.
An OS considers 1 GB =1073741824 bytes whereas the DVD manufacturers take 1 GB = 1000000000 bytes. This problem also arises in HDD. You buy a 80 GB HDD and the OS shows only ~74 GB.
Thats the reason why they differentiate GB and GiB, GB is used for 10 power 30 values, GiB is used for 2power 30 values.
oLLe adviseu. dengya for yur adviseu.
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