Varying Install Sizes

Discussion in 'Mac OS X Lion (10.7)' started by jschmitt, Jul 8, 2011.

  1. jschmitt macrumors member


    Jul 8, 2011
    Any ideas on this one?

    Early 2010 MBP (15 inch) HDD Clean Lion Install uses ~ 9.9 GB of disk space
    Mid 2010 MBP (17 inch) SSD Clean Lion install uses ~ 14.5 GB of disk space

    Pretty big discrepancy - any thoughts?

  2. jschmitt thread starter macrumors member


    Jul 8, 2011
    Mystery Solved ....

    The 17in MBP has 8GB RAM, whereas the 15in only 4GB RAM

    /private/var/vm/sleepimage is the culprit!

    install creates a file too match your configured RAM, hence the discrepancy between the size of the footprints of the 2 fresh installs!


  3. NazgulRR macrumors 6502

    Oct 4, 2010
    I have a different question that could use a thread with the same/similar name:

    SL install DVD is cca. 7GB and Lion (GM) install image is cca 4GB. Why the difference of 3GB? Obviously, you can use both for a clean installation. Is the Lion missing anything that SL had? Some drivers maybe?
  4. robbieduncan Moderator emeritus


    Jul 24, 2002
    Rosetta subsystem?

    Edit to add: I thought I read somewhere months ago that Lion did not have Printer Drivers and downloaded them on demand?
  5. Steve's Barber macrumors 6502a

    Jul 5, 2011
    Good question. But I do recall that after installing GM it took up an additional 800mb(?) in space. (When compared to a fresh and up to date SL install I have on another partition).
  6. Jerome Morrow macrumors 6502a

    Jerome Morrow

    Jun 13, 2011
    United Kingdom
    That's Xcode. With Lion Apple doesn't ship Xcode. That's your extra 3 GB or so.

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