I have a Macbook2,1
with 4GB RAM
, Intel Core 2 Duo 2GHz
and Leopard 10.5.8
and I need to upgrade it to Lion
. I've downloaded Lion installation dmg file and restored it to a USB disk using Disk Utility
.
But when I restart my MacBook holding option key, it doesn't show the USB disk. it only shows my hard disk. I've tried an external DVD-Drive (since the original DVD-Drive is not functional), same problem. Also I've tried restarting through Startup Disk preferences, same problem.
Any idea?
Best Answer
Thank you all for your help. I finally managed to make it work. It seemed the problem is somehow related to USB boot support of MacBook2,1. This is how it worked for me:
use these 5 steps if you're
upgrading from 10.5.X to 10.7.X
/System/Library/CoreServices/SystemVersion.plist
to desktopTextEdit
)ProductVersion
change10.5.X
to10.6.X
/System/Library/CoreServices/
overwriting the originalSystemVersion.plist
use these 8 steps if you have a problem with
USB boot
.BootCamp
Create a 5GB partitionDisk Utility
DMG
) and click on OpenRestore
ButtonESD
(below the DMG) ontoSource
newly create partition
ontoDestination
Restore
button below DestinationOption
key. Now the partition is available in the boot menu.