i just bought a dvd+rw thats supposed to have 4.7 gigs of space on it. however, when i check the properties it only holds 4.37GB of data. :confused:
why does it have just 4.37 and not 4.7??
Printable View
i just bought a dvd+rw thats supposed to have 4.7 gigs of space on it. however, when i check the properties it only holds 4.37GB of data. :confused:
why does it have just 4.37 and not 4.7??
The reason is, that the way they (manufacturers) total drives or disks. It's not 1000 kilobytes, but actually 1024 Kilobytes. So, the answer is:
Keep in mind that manufacturers quote the capacity of a writable DVD disc in decimal (base 10) rather than binary (base 2)
4,700,000 KB ÷ 1000 = 4,700 MB ÷ 1000 = 4.7 GB] but actually it's this instead.
4:700,000,000 bytes ÷ 1024 = 4,589,844 KB ÷ 1024 = 4,482.27 MB ÷ 1024 = 4.38 GB
Of course this is the same as any harddrive marked 80gb won't actually show in windows as 80gb it's 74gb.