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adihez · Apr 17, 2003, 11:22 AM

hi im trying to burn a dvd-r on my powerbook15" with 10.2.5
but it only recognizes 4.28gb instead of 4.7gb..is that normal? im new at this...
i tried using the dvdr from apple and another i bought myself .. both turned out the same...

icruise · Apr 17, 2003, 11:33 AM

A formatted DVD only gets that much -- it's normal.

Hanul · Apr 17, 2003, 11:36 AM

This is normal. A DVD-R labeled 4.7GB will in fact hold only 4.3GB. The difference comes from how Megabytes and Gigabytes are calculated (1MB=1000KB, or 1MB=1024GB).

BTW, 1 Megabyte = 1000*1000 Bytes, 1 Mibibyte = 1024*1024 Bytes.

adihez · Apr 17, 2003, 11:42 AM

thanks for the info...it was my 1st time burning a dvd-r

Vond · Apr 18, 2003, 02:00 AM

Originally posted by Icruise:
A formatted DVD only gets that much -- it's normal.

See Hanul's message. It has nothing to do with "formatting", it's just an accepted method of false advertising. Same for hard drives. You don't lose *gigabytes* to filesystem overhead.

nobitacu · Apr 18, 2003, 02:05 AM

Yea, this is normal, same with Hard Drives...

Ming