5 Replies Latest reply: Aug 17, 2010 5:33 PM by Kappy
kcdogg550 Level 1 Level 1 (0 points)
I am trying to use Boot Camp to get my recently purchased Windows 7 running but I was having issues with it. After doing some research I found out that it's because I need to format my HDD and the easiest free way to do this is to reinstall Mac OS X. So I used time machine to back up my HDD, and I was wondering how I go about reinstalling Mac OS X. My other question is should I use time machine to restore my info before I use Boot Camp or after?

Thanks for all help! =D

20" iMac, Mac OS X (10.5.8), 4GB RAM 2.0GHz 250GB Hard Drive
  • Kappy Level 10 Level 10 (251,085 points)
    Exactly what issues? Why do you think it's necessary to reformat the drive? That's a pretty extreme solution that should only be required if you've hosed the hard drive or don't have enough contiguous free space to accommodate the size of the Boot Camp partition you requested.

    Maybe you could explain matters in full detail.
  • kcdogg550 Level 1 Level 1 (0 points)
    I am trying to partition 50GB for Windows 7, but whenever I try to do this I get an error saying that Boot Camp cant move some of the files. After doing some research, I have come to the conclusion that I either need to buy a program that defrags my Mac and reformats it or reinstall Mac OS X. Since there is no freeware that does this I decided to go with the option that saves me some money and I am just going to reinstall Mac OS X.

    And yes I have heard it all about how there is no need to defrag your Mac or anything but looking at this picture I beg to differ:

    http://img208.imageshack.us/f/picture3dp.png/

    =P

    My HDD is 200GB, and I have ~100GB free, so I was planning on splitting that in half with Windows 7.

    So back to my original question, does anyone know how to reinstall Mac OS X, and/or should I restore my original files before or after I partition Windows? Thanks!

    Edit: I have tried partitioning smaller amounts, as low as 20GB, but that still doesn't work.

    Message was edited by: KenCochran
  • Kappy Level 10 Level 10 (251,085 points)
    The error from Boot Camp means that it cannot find 50 GBs of contiguous space at the end of the drive in which to place the partition.

    If it cannot, then the only solution is to defragment the drive. A simple solution if you have an external drive your can use:

    1. Repairing the Hard Drive and Permissions

    Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger, Leopard or Snow Leopard.) After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer. Now restart normally.

    If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.

    2. Clone using Restore Option of Disk Utility

    1. Open Disk Utility from the Utilities folder.
    2. Select the destination volume from the left side list.
    3. Click on the Restore tab in the DU main window.
    4.Check the box labeled Erase destination.
    5. Select the destination volume from the left side list and drag it to the Destination entry field.
    6. Select the source volume from the left side list and drag it to the Source entry field.
    7. Double-check you got it right, then click on the Restore button.

    Destination means the external backup drive.
    Source means the internal startup drive.


    3. *Boot from the external drive*: Restart the computer and after the chime press and hold down the OPTION button until the boot manager appears. Select the icon for the external drive then click on the downward pointing arrow button. The computer should boot from the external drive.

    4. Restore the Clone

    1. Open Disk Utility from the Utilities folder.
    2. Select the destination volume from the left side list.
    3. Click on the Restore tab in the DU main window.
    4.Check the box labeled Erase destination.
    5. Select the destination volume from the left side list and drag it to the Destination entry field.
    6. Select the source volume from the left side list and drag it to the Source entry field.
    7. Double-check you got it right, then click on the Restore button.

    Source means the external backup drive.
    Destination means the internal startup drive.


    Shut down the computer, disconnect the external drive, then restart. The computer will start from the internal drive with your old system all intact and the hard will be defragmented. Boot Camp Assistant should be able to make the 50 GB partition you want.
  • kcdogg550 Level 1 Level 1 (0 points)
    Thank you so much for your help. I just have 1 more question.

    Right this second I am repairing my permissions, and when its done, should I use time machine to back up my External HD, or is step #2, clone, mean that it will back it up onto my External HD?

    Thanks again!
  • Kappy Level 10 Level 10 (251,085 points)
    Cloning involves using Disk Utility, not Time Machine. You will have to erase the external drive prior to cloning.

    Just follow what I outlined.