Mark's first-gen Core Duo iMac is an A1174 20 inch (model identifier iMac4,1).
If youre going to attempt this, wed recommend installing Lion on a separate partition, and be sure to have a recent backup of your Mac hard drive just in case something goes wrong.
Open terminal and then delete the following file Volumes/ 'name of your new lion partition' step 11: Reboot your machine into Lion.MacBook 1,1 13 Mid-2006, macBook Pro 1,1 15 A1150 2006.The oldest iMac system generation supported by the Mountain Lion Installer is iMac7,1 - A1224/A1225, the mid-2007 first aluminum generation.Mount volume, then: System Library CoreServices ist.One suggestion I would make (as with all upgrades) is one of two routes prior to any upgrades: Install the new OS to a separate partition, so there is always a roll-back or escape lane should (god forbid) anything go awry).Ensure you have a full backup of your OS before installing / upgrading, using Time Machine to an external drive.MacRumors Forums, thanks for the submission Eric!Name: LionInstaller, size: 6 GB (or bigger format: Mac Oxtended.Step 1: Create a new partition for the installer (I suggest you use an 8Gb usb stick).Your machine will refuse to boot into the Lion you've just installed because a file needs to be deleted before it'll work.It mounts as 'Mac Onstall ESD'.Obviously backup any files you want to keep london 2012 olympics pc game full version to another partition first though!).Processors Apple will officially support Mac OS.7 Lion on are: Any Core 2 Duo processor, any Xeon Dual Core or better processor.Step 3: Mount the Base System image.Very often, the Installer is what's doing the system check, rather than the OS itself.
Encryption: none, partitions: Single partition - Apple Partition Map.
One of these hidden files is g which will be used to boot the system.
As soon as these are removed (from Software Update and the like then the solution will falter.A few peeps have been having some issues following the Video guide and steps needed posted previously, here's a step-by-step guide for installing Lion on any coreduo mac upgraded with a core2duo.Now, not being one to give up on these things lightly, a little investigation reveals a simple method of getting the installer to run and upgrade this hardware.The Lion installer image contains some hidden files, to get to them you'll need to use the terminal or in Pathfinder (which is easier for newbies) choose 'Show Invisible Files' from the View menu.It's inside the 'Install Mac Oion' app in the SharedSupport folder.Even if t racks 3 keygen you can get a later OS onto this box, there's a good reason.8 wasn't supposed to be installed.Sudo rm sudo cp -R Volumes/Mac Onstall ESD/Packages The copy (cp) command will take a few minutes since it's copying.2Gb of data to your LionInstaller partition.This solution works, as long as binaries included with the OS include 32-bit.