New To Mac-Forums?

Welcome to our community! Join the discussion today by registering your FREE account. If you have any problems with the registration process, please contact us!

Get your questions answered by community gurus Advice and insight from world-class Apple enthusiasts Exclusive access to members-only contests, giveaways and deals

Join today!

 
Start a Discussion
 

Mac-Forums Brief

Subscribe to Mac-Forums Brief to receive special offers from Mac-Forums partners and sponsors

Join the conversation RSS
OS X - Operating System General OS operation information and support

MacBook - HD File Space/Capacity Question


Post Reply New Thread Subscribe

 
Thread Tools
rydo2000

 
Member Since: Sep 14, 2007
Posts: 35
rydo2000 is on a distinguished road

rydo2000 is offline
Hi

I bought a Macbook 13" that comes with 120GB.

It arrived yesterday and when I click on Macintosh HD on the desktop it says on the bar below "94GB available" - or approximately that number.

Why does it not say 120GB?
QUOTE Thanks
Verted

 
Verted's Avatar
 
Member Since: Aug 18, 2006
Location: London, England
Posts: 79
Verted is on a distinguished road
Mac Specs: MacBook 13" Core Duo, White, 512mb RAM

Verted is offline
Because it has OS X and other applications pre-installed that take up some of the space. Also the drive probably isnt 120gb.120gb is just an approximate, so it was probably more like 115gb to start with.

--
Thanks,
- Verted

http://verted.net
QUOTE Thanks
KoDorSean

 
KoDorSean's Avatar
 
Member Since: Jun 03, 2006
Location: Denver Colorado
Posts: 2,374
KoDorSean has a brilliant futureKoDorSean has a brilliant futureKoDorSean has a brilliant futureKoDorSean has a brilliant futureKoDorSean has a brilliant futureKoDorSean has a brilliant futureKoDorSean has a brilliant futureKoDorSean has a brilliant futureKoDorSean has a brilliant futureKoDorSean has a brilliant futureKoDorSean has a brilliant future
Mac Specs: 2.4 GHz intel core 2 duo MBP, iPhone 5, iPad 3

KoDorSean is offline
"Mac OS X reports hard drive capacity in binary math, hard drive manufacturers report capacity in base 10 math"

"Modern operating systems such as Mac OS X use binary mathematics to define the total capacity of a hard drive. Using binary math, an 80-gigabyte (GB) hard drive reports approximately 74.51 GB of available space.

In binary math, 1 GB is equal to 1,073,741,824 bytes, whereas conventional (or base 10) mathematics instead calculate 1 GB as exactly 1,000,000,000 bytes.

This numerical discrepancy (73,741,824 bytes per gigabyte) represents a difference between the physical “base 10” specification used by hard drive manufacturers and Mac OS X’s binary measurement of available capacity. The 80 GB and 74.51 GB values represent two methods of mathematical measurement that describe a hard drive with approximately 80 billion bytes.

This is normal behavior, and there is no hard disk space missing. Regardless of which method is used to measure total capacity, the storage capacity in bytes of the hard drive is the same. Previous operating systems (including Mac OS 9 and earlier versions) also demonstrate this mathematical difference.

Other factors, such as the system software, applications, updates, and your files and data use part of the available disk capacity, meaning a new Macintosh computer will not show the total capacity listed as available for use. The amount of hard disk drive space required for normal operation of a Macintosh computer will vary widely, depending on configuration, model, and personal requirements.

Note: Hard disk manufacturers may also round off decimal places when stating storage specifications, such as approximately "39.5 GB" instead of "39.49 GB". "

http://docs.info.apple.com/article.html?artnum=30065


I was on the M-F honor roll for month : May 2007
QUOTE Thanks
kutrack1

 
Member Since: Mar 02, 2007
Posts: 22
kutrack1 is on a distinguished road

kutrack1 is offline
plus anytime after "formatting" a harddrive there is always going to be less than allotted, then throw in all the preloaded software.
QUOTE Thanks

Post Reply New Thread Subscribe


« OS X 10.3 won't boot | cleaning up cookies ect.. »
Thread Tools

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off
Forum Jump

Similar Threads
Thread
Thread Starter
Forum
Replies
Last Post
The QUESTION Game ToddG Schweb's Lounge 159 08-15-2007 06:25 PM
File Icons & Associations confusion markwm OS X - Operating System 1 03-04-2006 11:38 PM
Show Item Info inflexion OS X - Operating System 15 10-24-2005 11:34 PM
File browsing / moving question... Aptmunich OS X - Operating System 2 09-02-2004 08:56 AM
Mpeg file question pintayl Switcher Hangout 1 12-22-2003 03:18 PM

All times are GMT -4. The time now is 11:08 PM.

Powered by vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
X

Welcome to Mac-Forums.com

Create your username to jump into the discussion!

New members like you have made this community the ultimate source for your Mac since 2003!


(4 digit year)

Already a member?