Mac Thread, How to install an OS from a .dmg without burning it? in Technical; I have a .dmg image of OSX Server I want to install, but I dont have a dual layer DVD-R ...
18th April 2008, 11:19 AM #1
How to install an OS from a .dmg without burning it?
I have a .dmg image of OSX Server I want to install, but I dont have a dual layer DVD-R to burn it to
Theres a few suggestions here
which seem to say that if you put the .dmg on another partition or extract it there, you can boot from that partition as if its a CD
How do I do that?
Ive tried just copying the image to the partition, and also mounting it in OSX and then copying it to the partition, but when I boot and hold the option key, the only partition it lets me boot from is the one with OSX on it, not the one with the .dmg
Is this possible? What am I doing wrong?
18th April 2008, 12:00 PM #2
Doubt that this will help but if you already have a mac server floating around you should be able to make it boot the image over the network:
There may be a way to do this from another mac as well but I don't know.
18th April 2008, 12:02 PM #3
I suspect it is possible but I don't know how to do it so not going to attempt advice google might tell you.... Might be easier just to buy a blank dvd?
18th April 2008, 12:03 PM #4
This a way to configure a Linux server to support netboot.
Edit: Had a better look at this, it is very involved, I'd buy the DVD-DL as opposed to this option.
Last edited by SYNACK; 18th April 2008 at 12:13 PM.
18th April 2008, 12:25 PM #5
You need to use disk utility to burn the dmg as a partition to an external drive (eg ipod), copying/mounting the file will not work. I have done this for leopard but it should be the same for Server. Its pretty easy, think of it like burning an iso to a DVD
Installing Leopard From DMG gWHIZ
Last edited by somabc; 18th April 2008 at 12:38 PM.
18th April 2008, 12:52 PM #6
If you have a DMG image of OS X Server then you can *restore* this image using Disk Utility to a partition on an external drive that is set as a GUID Partition (in other words an Intel Mac can boot from it). There is a good process for doing this in easy steps here:
Originally Posted by sidewinder
How to Install Leopard from External Firewire Hard Drive at iUseApple
18th April 2008, 03:20 PM #7
Sorted now, installing as we speak
restored it to a partition on a firewire disk
I love Macs for stuff like this, makes it much easier
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