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Make Your Regular Mac a NetBoot Server!

Step 10Build A NetInstall Image...

Build A NetInstall Image...
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In this step we're going to learn how to use Apple's System Image Utility to build a NetBoot Installer. This process can be used with any or a combination of Installer files.

Note that if you're serving to both PPC and Intel Macs, you'll need to build seperate Images unless the Install file you're using is already a Universal Installer. Also, if you wish to boot the Installer from an Intel Mac, the BootImage must be created on an Intel Mac or from OS X 10.5 or later. This is because the necessary pieces aren't available on a standard PPC install of OS X 10.4.

Here, I'm going to demonstrate creating an Installer for the most recent PPC Combo Updater. I will make notations on what to change for the Intel (i386) variant. We're going to ignore (even override!) the more complex functions of the utility. You're welcome to experiment with those features later. Feel free to post your discoveries!

Since you've rebooted (you did catch that in the last step... Right?), log out and back in as the Root User.

Download the most recent Combo Updater from Apple's website. In this case, it will be the OS X 10.4.10 Combo Updater (PPC). Note that this comes as a disk image file. Double-click it to mount it.

Launch the System Image Utility and note that the New Installer icon is already selected (picture 1). Enter a title for the Installer and give it a unique number under 4096 (I start with 1024). You can give more details in the description. Leave the NFS and Local selected...

Click the Contents tab and set the Image Source pop-up menu to Custom Package Install, the Default Language to <Your Language Here> and finally click the Plus button to locate and select your Installer image from the mounted image (picture 2).

Optionally, you can go to the Installation Options tab and set Enable automated installation to allow the Macs booted from this image to operate without user intervention (picture 3). This is handy if you have a number of Macs on the same network that need the same update. Personally, I leave it off.

Click the Create button and agree to the license (pictures 4 & 5). You will be asked where to save the NetBoot Image (picture 6). Notice the pop-up menu toward the bottom that reads Serve from NetBoot sharepoint on:, select your hard drive from here. This indicates to you that you did, in fact, setup the Sharepoints correctly! Give the image a name without spaces, like Install_10.4.10 and click the Save button.

Wait until it's done... (Go get a coffee, tea lemonade... what-have-you...)

You can now quit the System Image Utility.
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2 comments
Oct 16, 2007. 2:06 PMCaraL says:
This is a great document. Is it possible to deploy a dual boot Intel Mac using Netboot and a regular Mac acting as the Netboot server? I saw a few references to Intel Macs. I'm looking for a way to image machines with both a Mac (dmg) image and an XP (ntfs) image. Thanks for any suggestions.
May 26, 2008. 3:42 PMxsmurf says:
I believe <a rel="nofollow" href="http://bombich.com/">http://bombich.com/</a> may have, at least part, of the answer.<br/>
Feb 25, 2008. 8:13 PMxsmurf says:
I'm thinking it might be necessary to install BootCamp and not install Windows. Possibly have grub or ntloader on a small partition and use that to setup netboot. But I'm speaking through my hat. I'd sure love that! No room on my mactel laptop to install windows, I could use the old Quicksilver or the NetBSD server to netboot the laptop... should be fast enough in gigabit :)
Feb 25, 2008. 8:21 PMxsmurf says:
Oh! On the site of the shareware I posted above....

"EFI Shell Environment 0.3 NetBoot Image http://beanz.nm.land.to/efishell.dmg " I'm not too sure of what it does but the name's intriguing!
Feb 25, 2008. 8:32 PMxsmurf says:
Errr my bad... that's what it's all about http://www2.tba.t-com.ne.jp/beanz/files/honeybee02e.pdf

"Net2USB Boot (Legacy Boot) :
OS which needs BIOS compatibility mode can boot. Bootable disk image is downloading from BootMania. In order to validate BIOS compatibility mode, it boots from a USB memory stick.In NetInstall of Linux, a USB memory stick with about 20 M bytes of capacity is required."

(sorry for the multi-posts)

Oct 28, 2007. 10:25 PM1ski says:
Oddly, though I followed your instructions to a 'T', I have no NetBoot Sharepoints available in System Image Utility. Rather, the Sharepoints only appear when I click the Network icon in the Finder window. However, if I attempt to save my file to one, it tells me that the filename is too long. The only weird thing that I can identify is that the folder /private/tftpboot already existed on my computer. Maybe because of xampp?
Oct 29, 2007. 7:40 AM1ski says:
followed your instructions for the sharepoint links; but it's still not showing up in system image utility

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