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 Post subject: Dual Booting
Unread postPosted: Sun Jan 17, 2010 4:21 pm 
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Is it possible to dual boot Mac OS 8.5 and 9 on a G3 B&W?


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 Post subject: Re: Dual Booting
Unread postPosted: Sun Jan 17, 2010 7:46 pm 
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Dead easy. You install two IDE drives. Then use "Startup" in the control panel to switch between.

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 Post subject: Re: Dual Booting
Unread postPosted: Sun Jan 17, 2010 8:27 pm 
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porter wrote:
Dead easy. You install two IDE drives. Then use "Startup" in the control panel to switch between.

Agreed, but can't you also create two partitions on a single drive, or is there something special about that model?


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 Post subject: Re: Dual Booting
Unread postPosted: Mon Jan 18, 2010 12:06 am 
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josehill wrote:
Agreed, but can't you also create two partitions on a single drive, or is there something special about that model?


You can have multiple partitions but classic MacOS can only have one HFS partition per physical disk.

My B+W G3 multiples boots Classic 9, Darwin 7, Darwin 8 and Tiger, but only has one HFS+ partition for Classic 9.

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 Post subject: Re: Dual Booting
Unread postPosted: Mon Jan 18, 2010 2:24 am 
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porter wrote:
josehill wrote:
Agreed, but can't you also create two partitions on a single drive, or is there something special about that model?


You can have multiple partitions but classic MacOS can only have one HFS partition per physical disk.

Am I misunderstanding something? For example, I have a PowerBook 1400 that dual boots OS 8.6 and 9.1 using a single drive with two HFS+ partitions. Also, I'm certain that my old SE/30 had no problem with multiple HFS-formatted partitions on single drives under System 7.


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 Post subject: Re: Dual Booting
Unread postPosted: Mon Jan 18, 2010 5:13 am 
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porter wrote:
Dead easy. You install two IDE drives. Then use "Startup" in the control panel to switch between.


This is what I was thinking about do, but I didn't know if it works or not. Thanks.


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 Post subject: Re: Dual Booting
Unread postPosted: Mon Jan 18, 2010 7:30 am 
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josehill wrote:
For example, I have a PowerBook 1400 that dual boots OS 8.6 and 9.1 using a single drive with two HFS+ partitions.


How do you select between the two? I must be wrong then, perhaps they added that when they added IDE support....

josehill wrote:
Also, I'm certain that my old SE/30 had no problem with multiple HFS-formatted partitions on single drives under System 7.
But was either partition bootable?

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 Post subject: Re: Dual Booting
Unread postPosted: Mon Jan 18, 2010 8:39 am 
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porter wrote:
josehill wrote:
For example, I have a PowerBook 1400 that dual boots OS 8.6 and 9.1 using a single drive with two HFS+ partitions.

How do you select between the two? I must be wrong then, perhaps they added that when they added IDE support....
I use the "Startup" Control Panel to select between the two. (Specifically, I use the MacOS 8.6 Startup Control Panel, regardless of whether MacOS 8.6 or 9.1 is running. There is an obscure, machine-specific bug in the MacOS 9.x Startup Control Panel that causes the control panel to crash when launched on a Powerbook 1400. Apple never bothered to fix it.)

porter wrote:
josehill wrote:
Also, I'm certain that my old SE/30 had no problem with multiple HFS-formatted partitions on single drives under System 7.
But was either partition bootable?
99% certain of it, but I'll need to replace the PRAM battery on my old SE/30 to verify it. Perhaps you are thinking of the restriction against having more than one System Folder on a single partition?


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 Post subject: Re: Dual Booting
Unread postPosted: Mon Jan 18, 2010 7:13 pm 
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No problem having multiple partitions AFAIK, I've had partitioned drives in many of my macs.

It's also possible, though not supported to have multiple System Folders. You can change the name of them or throw them into other folders. The problem becomes "blessing" the System Folder. You can use 3rd party utilities, I think the one I used a lot was "System Picker." You can also do tricks like move the "System" file out of the current System Folder and then open the System Folder you want to use (just open it like any other folder in the Finder) and it usually becomes the System Folder.

If you go the route of multiple System Folders on one partition use a 3rd party utility and expect something to go weird once in a while, but I had reasonably good luck in the old days.

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 Post subject: Re: Dual Booting
Unread postPosted: Mon Jan 18, 2010 8:23 pm 
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japes wrote:
It's also possible, though not supported to have multiple System Folders. You can change the name of them or throw them into other folders. The problem becomes "blessing" the System Folder. You can use 3rd party utilities, I think the one I used a lot was "System Picker." You can also do tricks like move the "System" file out of the current System Folder and then open the System Folder you want to use (just open it like any other folder in the Finder) and it usually becomes the System Folder.

Yep - that's correct.

I remember those old tools. I wish I knew half as much about current systems as I remember about 10-20 year old systems. :?


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 Post subject: Re: Dual Booting
Unread postPosted: Tue Jan 19, 2010 4:59 pm 
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josehill wrote:
Yep - that's correct.

I remember those old tools. I wish I knew half as much about current systems as I remember about 10-20 year old systems. :?



You're not the only one. I just fired up my Mac Plus an hour ago. The little machine is still kicking butt after all these years. 7 second boot up with 4mb Ram, and System 6 on an external Rodime20 hd. Played some Shufflepuck before putting the little beast away.

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 Post subject: Re: Dual Booting
Unread postPosted: Tue Jan 19, 2010 5:42 pm 
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VintageApollo735user wrote:
I just fired up my Mac Plus an hour ago. The little machine is still kicking butt after all these years. 7 second boot up with 4mb Ram, and System 6 on an external Rodime20 hd. Played some Shufflepuck before putting the little beast away.

Nice machine! Shufflepuck! That brings back some memories!


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