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10.4: Install OS X without first rebooting from DVD Install
Tiger only hintI couldn't find this anywhere in the hints and, in fact, I can't believe I never tried it until now. I needed to reinstall Tiger on a drive, but couldn't spare a reboot on any machine so I figured I'd look for the installer package on the DVD.

It turns out (I successfully tested this) you can just run the OSInstall.mpkg located in /System -> Installation -> Packages on the DVD.

Of course, this never worked under earlier versions of the OS, as the installer was split among multiple discs (and I'd assume that's still true for the CD replacement disc set for the Tiger Install Discs).

I just saved myself about a half hour of would-be wasted time.
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10.4: Install OS X without first rebooting from DVD | 19 comments | Create New Account
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10.4: Install OS X without first rebooting from DVD
Authored by: macgizmo on Dec 27, '05 07:31:26AM

Half an hour of wasted time??? It takes my G5 about 40 seconds to boot from the CD.

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10.4: Install OS X without first rebooting from DVD
Authored by: xSmurf on Dec 27, '05 09:09:31AM

I guess you have some sort of magical way of doing things with your machine while booted on the DVD install? Really let us know, even if there was Tetris I think everyone would be happy!

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exaggeration?
Authored by: sjk on Dec 29, '05 10:25:06AM
I have a very hard time believing you can boot a G5 from CD in ~40 seconds. Care to share specific details (hardware, CD media/content) for anyone who'd like to try recreating that claim?

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10.4: Install OS X without first rebooting from DVD
Authored by: skapplin on Dec 27, '05 07:43:22AM

You should point out that this will not work to install Tiger on a startup volume.



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10.4: Install OS X without first rebooting from DVD
Authored by: treshijos on Jan 13, '06 07:49:57AM

So do you handle it when installing on the main volume?



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10.4: Install OS X without first rebooting from DVD
Authored by: Coumerelli on Dec 27, '05 07:52:32AM

so, when you say you did this w/o a reboot - you had zero down time? didn't it require at least a reboot or two once it was on it's way?

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"The best way to accelerate a PC is 9.8 m/s2"



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10.4: Install OS X without first rebooting from DVD
Authored by: Coumerelli on Dec 27, '05 07:54:43AM

After reading skapplin's comment, this makes MUCH more sense - thanks

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"The best way to accelerate a PC is 9.8 m/s2"



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10.4: Install OS X without first rebooting from DVD
Authored by: Angel-fr on Dec 27, '05 07:53:03AM

i dont think you will get a stable system this way



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10.4: Install OS X without first rebooting from DVD
Authored by: avarame on Dec 27, '05 11:30:54AM

Why wouldn't you? Installer.app on the CD is pretty much the same as Installer.app in /Applications/Utilities. All the knowledge needed to install the system is in the pkg files.



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10.4: Install OS X without first rebooting from DVD
Authored by: mcroft on Dec 27, '05 08:36:54AM

This sounds like a good way to install to a G3 B&W, which can't boot from FireWire (and doesn't have an internal DVD). I mounted the G3's drive in a G4 and installed on that machine, which was a big cluster.

Thanks, this could be a big timesaver for me.



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10.4: Install OS X without first rebooting from DVD
Authored by: salsaman on Jan 09, '06 04:56:23PM

B&W G3's will boot target, you just need to update the firmware.

scott morabito



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10.4: Install OS X without first rebooting from DVD
Authored by: dzurn on Dec 27, '05 02:25:11PM

I suppose it would be clearer if the hint title was, "Install OS X on a [non-System] drive without first rebooting from DVD"

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10.4: Install OS X without first rebooting from DVD
Authored by: finne on Dec 28, '05 12:17:59AM
This did work with previous versions of the OS X install discs, but for multiple discs you would have to boot into the half-way installed system and finish of the installation.

I have performed this with 10.2 and 10.3. However, I think in 10.4 the installer became pickier about how it wants to run: when booted in 10.1 I could install 10.2, and from 10.2 I could install 10.3. But when booted from 10.3 I could not install 10.4 on another partition: it seems the 10.4 installer requires 10.4... so in that case you have to boot from the disc first.

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10.4: Install OS X without first rebooting from DVD
Authored by: dotgray on Dec 28, '05 04:23:02PM

Actually, you can also install 10.3 and earlier with multi-disc sets using the OSInstall.mpkg workaround as well. Just create compressed disk images through Disk Utility, mount them all, and then run the OSInstall package. I used this to re-install an iBook via Target disk mode, since it wouldn't boot from the stock 10.3 CD due to system version.

This also seems to work with at least some other multi-disk installers such as the Adobe Creative Suite; besides saving on disk shuffle/inventory hassle, the install is also notably faster than off the original media.



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10.4: Install OS X without first rebooting from DVD
Authored by: dirkstoop on Jan 02, '06 10:44:32AM

If you first create a disk image of your Tiger DVD and keep that handy on a local disk for situations liek this, you'll significantly speed up the installation process..

The nice thing about Tiger is that Tiger's Installer.app will succesfully install Panther from multiple disks/disk images on another drive. (previously you could only install disk 1, reboot from the newly installed volume and be prompted for the next disk(s), now when you run Panther's OSInstall.mpkg you'll be prompted for disk2 and 3 when needed throughout the installation)

If you need to quickly install a clean OS on a couple of macs open OSInstall.mpkg from a disk image on a hard drive is probably the fastest reliable way possible :)



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10.4: Install OS X without first rebooting from DVD
Authored by: mortimersnerd on Feb 22, '06 06:38:13AM

I have used this method successfully many times. It's convenient, fast, and flexible--

--UNTIL NOW:

If I try to install 10.4 to another volume while booted from any volume to which the 10.4.5 update (delta or combo) has already been applied, the installation fails at the very end with "There were errors during the installation...Please try again."

install.log (from Console) reveals that bless is invoking the (undocumented and apparently unavailable) --bootefi option.

Has 10.4.5 been in some way(s) Intel-ified even on PPC machines? (one a QS2002, the other an 8600 with XPostFacto)

Installation while actually booted from the DVD, OR while booted from a volume running any Tiger other than 10.4.5 (i.e. 10.4.4 or earlier), is as successful as it's always been.



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10.4: Install OS X without first rebooting from DVD
Authored by: kirkmc on Feb 22, '06 08:01:00AM

I tried this when I needed to do a test installation recently. I had to bless the volume from the command line; it didn't get blessed during the installation...

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10.4: Install OS X without first rebooting from DVD
Authored by: mortimersnerd on Feb 26, '06 12:57:00PM

Please see my comment above about --bootefi.

Somehow, the installer is asking "bless" to tell the target volume to "bootefi" on a machines that shouldn't know EFI from a hole in the wall.

I wonder what gives?

And aside from that, although I've read the man page for bless many times, the biggest blessing I've ever bestowed upon a volume is to specify the -folder (and/or -folder9 for OS 9)) options. Could you, pretty please, spell it out for this poor beta-geek?



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10.4: Install OS X without first rebooting from DVD
Authored by: bryanus on Feb 20, '07 04:22:57PM

Just tried this trick. Worked fine for me. I installed 10.4 from the DVD onto a Firewire external drive, booted from 10.4.8. Installer completed with no errors. I only installed a base system + X11 (no printer drivers or languages).



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