why ?

[duhu]

Man, why on dvds it says 4.7 gb and i can only write about 4.390 on it? I have tried with all formats + and - and tha same prb, if u can only write 4.390 why it says 4.7gb ?

thx

[I_Broke_My_MHZ]

This is a guess, but it probably has to do with the DVDs being rated as 4.7 on a 1000kb = 1mb scale as opposed to the scale that is used normally 1024kb = 1mb.

[nmX.Memnoch]

as opposed to the scale that is used normally 1024kb = 1mb.

Which is the correct scale.

It's why hard drive sizes always show less in the OS than what the box says...they cheat and use the 1000K method.

[duhu]

so thats tha trick !! thx

[KamiQuazi]

shouldn't that be labeled as false advertisement? I mean the companies knows that it is 1024kb per 1mb not 1000kb per 1mb... they are using their slip-ups for their montary gain...

[I_Broke_My_MHZ]

Just because Windows says 1024kb = 1mb doesn't mean everyone else has to! To me it makes a lot more sense that 1000kb = 1mb being that a mega is 1000 kilos.

[Wolf_Demon]

Just because Windows says 1024kb = 1mb doesn't mean everyone else has to! To me it makes a lot more sense that 1000kb = 1mb being that a mega is 1000 kilos.

yeah but it is based on binary. and in binary, 1024kb = 1mb. it's just like time, it's based on 60, but it would make more sense to be based on 100 wouldn't it?

[Fox Mulder]

duhu, I can write 4482MB on my movie backups in DVD+Rs... where have your remaining 92MB gone?

[nmX.Memnoch]

Just because Windows says 1024kb = 1mb doesn't mean everyone else has to! To me it makes a lot more sense that 1000kb = 1mb being that a mega is 1000 kilos.

Notice I said "less in the OS", not "less in Windows". As was mentioned, it's based on binary...not "because Microsoft says so". This is one case where they actually follow the standard.

[suryad]

And also I think the space is taken up by the file system itself to remember where and what bits are located.