Disk size ?

[komoornik]

I've installed Win 7 via Bootcamp. Divided SSD - Mac OS X told be it would be 23 GB for it and over 97 GB for Bootcamp ( which would be ~120 GB, that's fine for a 128GB SSD ).

But i don't why Windows 7 says the Bootcamp partition got 90,7 GB and Mac OS X got 21,4 GB ?

 

[simsaladimbamba]

I've installed Win 7 via Bootcamp. Divided SSD - Mac OS X told be it would be 23 GB for it and over 97 GB for Bootcamp ( which would be ~120 GB, that's fine for a 128GB SSD ).

But i don't why Windows 7 says the Bootcamp partition got 90,7 GB and Mac OS X got 21,4 GB ?

Mac OS X uses base 10 figures to show file sizes, meaning 128 billion bytes are shown as 128GB, while Windows still uses the base 2 system, thus 128 billion bytes divided by 1024^3 is 119.2GB.

 

[komoornik]

I think you don't understand.

Mac OS X shows me the four partitions:
200 MB efi, 650 MB recovery, 97 GB Bootcamp and 23 GB OS X

It says SSD size is ~121 GB, which I know would be correct for a "128 GB" drive.

On windows:
90.78 GB ( bootcamp ) + 21,42 GB ( Mac OS X ) + 200 MB ( efi ) + 620 MB ( recovery ) and that's about 113 GB.

So I'm missing more then 6 GB ?

 

[simsaladimbamba]

I think you don't understand.

Mac OS X shows me the four partitions:
200 MB efi, 650 MB recovery, 97 GB Bootcamp and 23 GB OS X

It says SSD size is ~121 GB, which I know would be correct for a "128 GB" drive.

On windows:
90.78 GB ( bootcamp ) + 21,42 GB ( Mac OS X ) + 200 MB ( efi ) + 620 MB ( recovery ) and that's about 113 GB.

So I'm missing more then 6 GB ?

Lets assume Mac OS X uses base 10 to show the disk size, meaning that the 121GB SSD would have 121 billion bytes to store things, but in Windows the base 2 is used to show disk and file sizes, meaning going from 1KB to 1MB uses 1024 as multiplicator instead of the 1000 Mac OS X now uses. Thus 121 billion bytes would be 112.7GB in Windows.

 

[komoornik]

So this means the actual usable size is ~121 GB ?

So rest of the space is probably reserved by controller?

 

[simsaladimbamba]

So this means the actual usable size is ~121 GB ?

So rest of the space is probably reserved by controller?

The available capacity is less than the 128GB it says it has. I have a 64GB SSD, but only 60GB is available. AFAIK the rest is used for garbage control and such shenanigans.