Installing OSX (SL) from a .dmg from an external HD / Flash Drive
Hi... Please Help!!!
My copy of snow leopard is badly scratched so I made a .dmg of it onto an external HD. Now I need to reinstall it onto my MacBookPro, and I cannot figure out how to do it. I own a Mac Pro and am wondering if I can launch the Macbook Pro holding down the "T" key and (seeing it as a firewire device) and have the Mac Pro install the software. Or do I need to make the external HD a bootable drive?
When I launch the .dmg it says that I need to burn a disk image to a DVD... but it is bigger than the 4.7 gigs....augh!
Please help!
I found this on the web.... and now I am really stuck.... The MacBookPro appears to have Snow Leopard installed, but now it has a question mark flashing when I try to launch the MBP... It seems it cannot find the software I have just installed..... below is what I have done thus far from the internet....
Hook what ever Mac you need up via FW target disk mode.
Open the dmg file
open terminal and type/cut and paste
open "/Volumes/Mac OS X Install DVD/System/Installation/Packages/"
this will open the installer package. Look for the file OSinstall.mpkg
double click it to open the installer, which will now run from the server mac and install onto whatever mac you have attached. Much faster than using a dvd and less prone to getting scratched.
Note the re are a couple of restricitions. You need to be running 10.5 to install 10.5, but 10.5 will install 10.4.
You need an intel mac to install onto an intel mac as it needs a GUID partition map
You need a PPC mac to install onto a PPC Mac
You can also install OSX onto an external FW drive plus the dmg files you need and then boot your mac from the external drive.
Mac OS-OTHER, Mac OS X (10.6.7)