1 Reply Latest reply: Feb 21, 2015 6:29 AM by Michael Maeder
Bill Carter Level 2 Level 2 (235 points)


I am running Snow Leopard on a Mac Pro.  Trying to create an OCZ SSD bootable toolbox for Mac, with downloaded OCZ instructions and appropriate dmg.  file.. Using a brand new 8Gb USB drive I carefully follow instructions (using Disk Utility) until I get to, (quote):

"Click 'restore' and enter your admin name and password when prompted. Apple again prompts to the next step to 'scan' the image (dmg file), else the utility will not allow you to continue.."

The problem is that after I click ‘restore’ and enter admin name and password,  I get the following error message each time I try..



Could not find any scan information. The source

image needs to be imagescanned before it can be



I click OK on the error message, and the process just comes to an end, without anything being written to the USB drive. There is no system request to ‘scan’ the image, just the error message.  In fact I have no idea what imagescanning means with reference a dmg. file?

Any help gratefully received....thanks...BC

Mac Pro, Mac OS X (10.6.8), Twin 20" Apple cinema displays
  • Michael Maeder Level 1 Level 1 (0 points)

    Had this too:


    What you get on the OCZ website is an ISO, not a DMG.


    Here's the correct download of the firmware-updater:




    And here are the correct instructions:




    Go to page 4:


    Under Mac OS X, do not use any third party utility. To put the required files on your USB flash drive:


    1 Open Disk Utility and insert your USB flash drive.

    2 Select the USB flash drive and click the Erase tab to display it.

    3 Select format MS-DOS (FAT) and click Erase.

    4 Double-click the.ISO file to mount the ISO image.

    5 Use drag-and-drop to copy all the files from the mounted ISO to the USB flash drive.


    Insert the bootable USB flash drive and start up your Mac.


    Immediately after the chime, or when the screen switches on (indicated by the black screen becoming gray), hold down the Option (Alt) key until the bootable drives are listed. When using a USB flash drive, a USB icon (example below) is shown. This can take from several seconds up to several minutes: you must continue to press the Option (Alt) key.