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

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.

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.

so thats tha trick !! thx

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...

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.

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?

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

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.

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