OS X Recovery Disk Assistant v1.0 and USB flash ?

Discussion in 'Mac Basics and Help' started by tanventure, May 16, 2013.

  1. macrumors newbie

    Jan 17, 2013

    I am trying to ran Recovery Disk Assistant (RDA) on my iMac to make a USB flash driver bootable, the USB flash has been used for other purposes. Got error message, just saying failed in making a recovery disk:(

    Do I need to first delete all files, then make it a Mac format before running RDA?

    Thanks for your kind help ;)
  2. macrumors P6


    Jan 23, 2005
    Try opening Disk Utility and click the drive itself (not a volume below the drive) and format to Mac OS Extended. This will of course erase any data on the USB key.

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