6 Replies Latest reply: Jan 26, 2013 11:16 AM by Gazbo
Gazbo Level 1 (0 points)

I fitted a 2nd drive to my 2006 Mac Pro in anticipation of dual booting Windows (not done yet). The dive is FAT formatted but is empty. Why does the Mac Pro try to boot up from that drive every time I start it up, despite having set the startup disc as OS X in the System Prefs?! Getting sick of seeing the flashing folder with the question mark evry time I start it up.

Mac Pro, Mac OS X (10.6.8), 1.1 2.66 GHz Quad Core 2x500GB 8GB
  • Kappy Level 10 (266,058 points)

    Be sure the blank drive is not in the first slot (leftmost.) Move it to another slot; be sure the boot drive is in the first slot.

  • Gazbo Level 1 (0 points)

    New drive in the second slot. Original drive left untouched.

  • Kappy Level 10 (266,058 points)

    I might be inclined to think the problem is really on your startup drive. You might try reinstalling Snow Leopard.


    Also, try:


    Resetting your Mac's PRAM and NVRAM



    Reinstall OS X without erasing the drive


    Do the following:


    1. Repair the Hard Drive and Permissions


    Boot from your Snow Leopard 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 Utilities menu. 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.


    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. Reinstall Snow Leopard


    If the drive is OK then quit DU and return to the installer.  Proceed with reinstalling OS X.  Note that the Snow Leopard installer will not erase your drive or disturb your files.  After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.


    Download and install the Combo Updater for the version you prefer from support.apple.com/downloads/.

  • Gazbo Level 1 (0 points)

    Seems good now. Permissions repaired and starts up much faster! Thanks.

  • Gazbo Level 1 (0 points)

    I take it back, it's messing about again. I ran the Disck Utility again and there are tons of different permissions again. Can't understand what's going on. It was fine until the second drive went in!

  • Gazbo Level 1 (0 points)

    There are also a couple of things I've noticed. Not all the permissions seem to be able to be repaired and when starting up using the DVD the Disc Utility shows the second drive as 3.6TB! It's not, it's only 500GB.