Apple has issued iMac Hard Drive Firmware Update 1.0. The firmware update fixes a hard drive issue that may prevent some iMac (21.5-inch and 27-inch, Mid 2010) systems from booting properly. The update requires Mac OS X 10.6.7 or later and weighs in at 767 KB. You can download it by running Software Update or via Apple's support site here.Apple issues iMac Hard Drive Firmware Update 1.0 originally appeared on TUAW