Results 1 to 4 of 4
  1. #1

    Member Since
    Aug 28, 2009
    New Macbook Pro Missing ~15 GB Hard drive
    Hi, I recently bought a new 13" MBP that came with 160GB. After adding my documents, pictures, and music from my old ibook G4 to the MBP, I noticed there was some "available GB" missing. I added up my GB used and there is about 15 GB total that I cannot account for. Here is what I can account for:

    Personal Folder: 2.5 GB
    Applications: 4.21 GB
    Library: 7.34 GB
    System: 4.28 GB
    Users: 29.68 GB

    Total used: 48
    Available GB: 96.03
    Missing: 16
    Stock: 160

    Any idea where the 16 GB are, or if this is normal, or a problem? Thanks very much for any help you can offer.

  2. #2

  3. #3

    Member Since
    Feb 25, 2009
    Late 2013 rMBP, i7, 750m gpu, OSX versions 10.9.3, 10.10

    Welcome to the forums!
    First thing to discuss is had drive sizes. HD manufacturers reports sizes based on actual amount of bytes, so if for a simple example, if a hard drive specified it stored 1K (for simplicities sake), it would store 1000 bytes. Software and computers relate the size of a drive based upon a power of 2, ie: 1024 bytes = 1K, so the software would say the drive is smaller then the box just because of a conversion factor. As a simple example - my hard drive is a "250 Gig HD" in my macbook. Disk Utilities shows me the total capacity in both raw bytes (250,059,350,016) and the equivalent Gigabytes (232.9) I've not lost anything, it's just a difference in representation. It'd be nice if the HD manufacturers followed base 2 convention since that is how computers display the size of drives - but they tend to like to make the HD look as big as possible, even if it isn't reported that big because of the conversion to base 2

    Now the other factors that take place:

    1) When you format a drive, some of it is lost in the formatting process to reserved space. The amount of reserved space is dependent on the filesystem used (since NTFS reserves space differently then Linux EXT or OSXs HFS+).

    2) What you see to add up is not necessarily all there is - especially if you're pulling those numbers from the finder. The finder hides a lot of system files that Apple has deemed as not to be touched areas so they don't show them to you.

    It doesn't sound like you're missing any real space.
    My Macs: Late 2013 rMBP w/ 750m, 16Gig ram; 2013 Mac Pro 6 core w/ D700, 16Gig Ram; Mac mini G4, 1.25 GHz, 512m ram (server); Late 2011 11" MBA, 1.8GHz i7, 4Gig Ram, 256Gig SSD, HD3000; Powerbook 12" G4 1.33GHz running Linux; Apple TV (1080p version)

  4. #4

    Member Since
    Aug 28, 2009
    Nethfel, thanks very much for taking the time to explain that!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Files missing after upgrading hard drive to SSD on Macbook
    By tiko45 in forum macOS - Operating System
    Replies: 1
    Last Post: 02-10-2015, 09:13 PM
  2. Macbook Pro with a Mac Pro hard drive?
    By Mike6158 in forum Apple Notebooks
    Replies: 5
    Last Post: 11-16-2013, 01:42 PM
  3. Hard drive question! Macbook pro/mac pro
    By EvanLopez in forum Other Hardware and Peripherals
    Replies: 5
    Last Post: 05-04-2013, 07:53 PM
  4. Replies: 2
    Last Post: 07-26-2011, 08:39 PM
  5. External hard drive for Final Cut Pro & Macbook pro
    By Sany in forum Other Hardware and Peripherals
    Replies: 5
    Last Post: 06-13-2008, 01:38 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts