True Capacity of new Nano?

Discussion in 'iPod' started by jersey10, Sep 15, 2006.

1. jersey10 macrumors regular

Joined:
Jan 20, 2004
#1
I just got the 8GB new Nano (the black one). Out of the box, before any songs are added, it displays an actual capacity of only 7.45 GB. I assume this is correct for the 8GB model, but wanted to make sure and find out why.

Let me know. Thanks.

2. gauchogolfer macrumors 603

Joined:
Jan 28, 2005
Location:
American Riviera
#2
Yes this is perfectly normal. The 8GB on the box is calculated using 1000 bytes as a kilobyte. The computer calculates a kilobyte as 1024 bytes. When multiplied up to 8 gigs, this is where the discrepancy comes from.

3. Chundles macrumors G4

Joined:
Jul 4, 2005
#3
Computers use the wrong term for storage. GB is an SI unit referring to 10^9 bytes but computers apply the same term to 2^30 bytes. They should say GiB.

You bought 8,000,000,000 bytes:

Divided by 1024 = 7812500 KiB
Divided by 1024 = 7629.4 MiB
Divided by 1024 = 7.45 GiB

So there you go - you get the full 8 billion bytes but because computers incorrectly use an SI prefix for what is a binary measure of capacity it will show an apparent loss of ~7% of the advertised HDD space although you don't actually lose any space.

Usually, for an blank 8GB HDD the computer will report a little less than 7.45GiB - this is the space lost to formatting and it is usually very little. On an iPod it's a little more because of the iPod's OS, built in software and resources.

Joined:
Jun 21, 2004
Location:
ct, us