Re: Can you have both 10.2 AND 10.4 on same disk?

[Charles Davis]

On Nov 9, 2008, at 5:11 PM, Jonas Lopez wrote:

>
> --- On Sun, 11/9/08, Clark Martin <[EMAIL PROTECTED]> wrote:
>> From: Clark Martin <[EMAIL PROTECTED]>
>> Subject: Re: Can you have both 10.2 AND 10.4 on same disk?
>> To: g3-5-list@googlegroups.com
>> Date: Sunday, November 9, 2008, 9:48 AM
>> Bruce Johnson wrote:
>>>
>>> On Nov 9, 2008, at 6:24 AM, Charles Davis wrote:
>>>
>>>>
>>>> On Nov 8, 2008, at 10:55 PM, Jonas Lopez wrote:
>>>>
>>>>> Can you have both 10.2 AND 10.4 on same disk?
>>>> YES   ---> use separate partitions!
>>
>>
>>>>> Do all 10s require you to be in the first 4GB
>> of the disk?
>>>> NO  [I think it's a 'hardware
>> dependent' sort of thing. I.E older G3
>>>> & G4 systems primarily.
>>>
>>> NO system ever required OS X to be in the first 4 GB
>> of a disk.

### NOTE BELOW SECTION  
###
>>>
>>> Beige G3's, the Wallstreet Powerbook G3, and the
>> first-gen iMacs, AND
>>> ONLY THOSE SYSTEMS required OSX (version 10.1 and
>> 10.2) to be
>>> installed in a maximum 8 Gb boot volume, which had to
>> be the first
>>> partition on the boot device.
## NOTE ABOVE  

>>
>> The specific requirement is that the boot volume (and thus
>> it's
>> partition) must be completely in the first 8Gb.  That's
>> actually the
>> requirement of the installer.  The real hardware limitation
>> is that
>> files used in the boot process up to some point must be
>> within the first
>> 8Gb.
>>
>> Basically the boot firmware doesn't know how to access
>> files beyond 8Gb.
>>
>> You could build a system on a disk partition larger than
>> 8Gb using a
>> different computer and then boot it on one of the above
>> machines.  But
>> if any critical file got moved above 8Gb it won't boot.
>> Clark Martin
>> Redwood City, CA, USA
>> Macintosh / Internet Consulting
>
> I am confused: I have 10.2 on 7.93Gb, which is under 8, yet it works.
> It is the first partition on a 7.93 + 10.71  = 18GB HD I have OS 9  
> on the 10,71, which by the way is 8.81GB available, so the question  
> is can I install 10.4 on the 8.81 partition?

That answer is noted above ---  please read the responses.

Chuck D.
>
>
>
>

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Re: Can you have both 10.2 AND 10.4 on same disk?

[Jonas Lopez]

--- On Sun, 11/9/08, Clark Martin <[EMAIL PROTECTED]> wrote:
> From: Clark Martin <[EMAIL PROTECTED]>
> Subject: Re: Can you have both 10.2 AND 10.4 on same disk?
> To: g3-5-list@googlegroups.com
> Date: Sunday, November 9, 2008, 9:48 AM
> Bruce Johnson wrote:
> > 
> > On Nov 9, 2008, at 6:24 AM, Charles Davis wrote:
> > 
> >>
> >> On Nov 8, 2008, at 10:55 PM, Jonas Lopez wrote:
> >>
> >>> Can you have both 10.2 AND 10.4 on same disk?
> >> YES   ---> use separate partitions!
> 
> 
> >>> Do all 10s require you to be in the first 4GB
> of the disk?
> >> NO  [I think it's a 'hardware
> dependent' sort of thing. I.E older G3
> >> & G4 systems primarily.
> > 
> > NO system ever required OS X to be in the first 4 GB
> of a disk.
> > 
> > Beige G3's, the Wallstreet Powerbook G3, and the
> first-gen iMacs, AND  
> > ONLY THOSE SYSTEMS required OSX (version 10.1 and
> 10.2) to be  
> > installed in a maximum 8 Gb boot volume, which had to
> be the first  
> > partition on the boot device.
> 
> The specific requirement is that the boot volume (and thus
> it's 
> partition) must be completely in the first 8Gb.  That's
> actually the 
> requirement of the installer.  The real hardware limitation
> is that 
> files used in the boot process up to some point must be
> within the first 
> 8Gb.
> 
> Basically the boot firmware doesn't know how to access
> files beyond 8Gb.
> 
> You could build a system on a disk partition larger than
> 8Gb using a 
> different computer and then boot it on one of the above
> machines.  But 
> if any critical file got moved above 8Gb it won't boot.
> Clark Martin
> Redwood City, CA, USA
> Macintosh / Internet Consulting

I am confused: I have 10.2 on 7.93Gb, which is under 8, yet it works. 
It is the first partition on a 7.93 + 10.71  = 18GB HD I have OS 9 on the 
10,71, which by the way is 8.81GB available, so the question is can I install 
10.4 on the 8.81 partition?



  

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Re: Can you have both 10.2 AND 10.4 on same disk?

[Clark Martin]

Bruce Johnson wrote:
> 
> On Nov 9, 2008, at 6:24 AM, Charles Davis wrote:
> 
>>
>> On Nov 8, 2008, at 10:55 PM, Jonas Lopez wrote:
>>
>>> Can you have both 10.2 AND 10.4 on same disk?
>> YES   ---> use separate partitions!


>>> Do all 10s require you to be in the first 4GB of the disk?
>> NO  [I think it's a 'hardware dependent' sort of thing. I.E older G3
>> & G4 systems primarily.
> 
> NO system ever required OS X to be in the first 4 GB of a disk.
> 
> Beige G3's, the Wallstreet Powerbook G3, and the first-gen iMacs, AND  
> ONLY THOSE SYSTEMS required OSX (version 10.1 and 10.2) to be  
> installed in a maximum 8 Gb boot volume, which had to be the first  
> partition on the boot device.

The specific requirement is that the boot volume (and thus it's 
partition) must be completely in the first 8Gb.  That's actually the 
requirement of the installer.  The real hardware limitation is that 
files used in the boot process up to some point must be within the first 
8Gb.

Basically the boot firmware doesn't know how to access files beyond 8Gb.

You could build a system on a disk partition larger than 8Gb using a 
different computer and then boot it on one of the above machines.  But 
if any critical file got moved above 8Gb it won't boot.

-- 
Clark Martin
Redwood City, CA, USA
Macintosh / Internet Consulting

"I'm a designated driver on the Information Super Highway"

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Re: Can you have both 10.2 AND 10.4 on same disk?

[Bruce Johnson]

On Nov 9, 2008, at 6:24 AM, Charles Davis wrote:

>
>
> On Nov 8, 2008, at 10:55 PM, Jonas Lopez wrote:
>
>>
>> Can you have both 10.2 AND 10.4 on same disk?
>
> YES   ---> use separate partitions!

That's how you do it.

>
>>
>> Some programs do not have newer versions, so to run them you need
>> to run older 10.2

Not necessarily. Most programs that run in 10.2 will work in 10.4  
unless they're specific 10.2 utilities and the like. What specific  
programs have you run into like that?

>> just like we did for 8 and 9 long ago. But with 8
>> and 9, the demands were less stringent than those of 10.*.
>>
>> Do all 10s require you to be in the first 4GB of the disk?
>
> NO  [I think it's a 'hardware dependent' sort of thing. I.E older G3
> & G4 systems primarily.

NO system ever required OS X to be in the first 4 GB of a disk.

Beige G3's, the Wallstreet Powerbook G3, and the first-gen iMacs, AND  
ONLY THOSE SYSTEMS required OSX (version 10.1 and 10.2) to be  
installed in a maximum 8 Gb boot volume, which had to be the first  
partition on the boot device.

>
>> How could you then have both 10s working?

You can't, barring running it in a virtual machine, which can be done  
in a limited fashion on Intel Macs ( see a recent MacOSX Hints item on  
doing this)

>> What does 10.4 require?

Official requirements for OS X 10.4 are here 


Note this is official requirements;  the installer will run and Apple  
will support OS X on these systems.

--
Bruce Johnson

"No matter where you go, there you are", B. Banzai


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Re: Can you have both 10.2 AND 10.4 on same disk?

[Charles Davis]

On Nov 8, 2008, at 10:55 PM, Jonas Lopez wrote:

>
> Can you have both 10.2 AND 10.4 on same disk?

YES   ---> use separate partitions!
>
> Some programs do not have newer versions, so to run them you need  
> to run older 10.2 just like we did for 8 and 9 long ago. But with 8  
> and 9, the demands were less stringent than those of 10.*.
>
> Do all 10s require you to be in the first 4GB of the disk?

NO  [I think it's a 'hardware dependent' sort of thing. I.E older G3  
& G4 systems primarily.

BUT --- You won't have both systems working at the same time. You  
will boot one (of the available systems), but can open applications  
on any of the 'OSX' partitions.

HTH

Chuck D.

> How could you then have both 10s working? What does 10.4 require?
>
> JML
>
>

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