Late Monday, Apple released its Hard Drive Firmware Update 1.0 for the 21.5″ and 27″ mid-2010 iMac desktops. The update, an 819 kilobyte download, fixes a hard drive issue that may prevent some iMac (21.5-inch and 27-inch, Mid 2010) systems from booting properly.

Users will need an Intel-based iMac running Mac OS X 10.6.7 or later to install and run the update.

If you’ve tried the update and have any feedback to offer, let us know.