iPod Video ssd wrong size

[arty6669]

128GB SSD drive shows 111GB in windows 8.1 and iPod video 5Th gen

[gevaerts]

There are two competing definitions for GB. One uses 1024 bytes per kilobyte, 1024 kilobytes per megabyte, and so on. The other one uses 1000 all the way through. These days you're supposed to use "GiB" for the first definition, but almost nobody does that.

Historically most software has used the 1024 based definition, and hard drive (and ssd) manufacturers prefer the 1000 based one, because that gives bigger numbers which are good for marketing.

[arty6669]

Thank You so much your the best.

[arty6669]

But i thought a 128GB would be 119gib and a 120 would be 120 GB ==> 111.75 GiB.  I hope that is right, I don't want to fell stupid.  I`m real bad in grammar please forgive me.  And what can i do to change that.

[arty6669]

So by the first definition mead the first partition of the drive  I better quit while i am  ahead lol.

[gevaerts]

But i thought a 128GB would be 119gib and a 120 would be 120 GB ==> 111.75 GiB.

Hmm, good point. Maybe filesystem overhead?

[Frankenpod]

Don't SSDs (in particular) reserve/hide a bit of space for reallocating sectors that go bad?  Though, then again, I guess they normally allow for that in the stated capacity, hence saying 120Gb rather than 128Gb in the first place?

Pity the Gib term never caught on - it seems like people have been writing puzzled letters to computer magazine help pages over the issue since long before the web existed ("why is my hard drive smaller than it should be?").