December 3, 2011
A clean install of Mac OS X Lion
Lion is not designed to be installed standalone. You could only upgrade from Snow Leopard.
My system was also upgraded from Snow Leopard; but the system became really slow after upgrading. So I decided to perform a clean installation. But I don’t want to re-install Snow Leopard and then upgrade.
After research, I found it not that hard to install Lion directly.
First you need a 8Gb flash drive or SD card. (I used SD card.)
Make a bootable drive from the DMG file you have. Please refer to
http://osxdaily.com/2011/07/08/make-a-bootable-mac-os-x-10-7-lion-installer-from-a-usb-flash-drive/
Reboot your system and hold option key. Boot from your flash drive.
Use Disk Utility to erase your HD.
Install Lion.
That’s it!
Enjoy your clean Lion.