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HT1578: How to create a password-protected (encrypted) disk image

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HT1578 Disk Utility says there's no room on disk when "info" says there is

1048 Views 1 Reply Latest reply: Sep 22, 2012 10:19 PM by BDAqua RSS
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Sep 22, 2012 8:36 PM

I wanted to create a password-protected 498 GB disk image on a new 500 GB external hard drive. So I successfully created the disk image but I forgot to ask for encryption so the new disk image is unprotected. Realizing this, I erased the drive to start over and the "info" says 498 GB free. But when I try to create a new disk image, Disk Utility keeps saying "cannot create disk image - not enough room."  What can I do?

G5, Mac OS X (10.5.2)
  • BDAqua Level 10 Level 10 (114,745 points)

    Hi , and a warm welcome to the forums!


    Could be many things, we should start with this...


    "Try Disk Utility


    1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.

    2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu at top of the screen. (In Mac OS X 10.4 or later, you must select your language first.)

    *Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*

    3. Click the First Aid tab.

    4. Select your Mac OS X volume.

    5. Click Repair Disk, (not Repair Permissions). Disk Utility checks and repairs the disk."



    Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.


    (Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)


    If perchance you can't find your install Disc, or are running 10.7+, at least try it from the Safe Boot part onward.


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