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Groups > comp.sys.mac.system > #107318 > unrolled thread

old iMac OS upgrade advice

Started bydyera@not.freeshell.org.invalid
First post2017-05-30 14:02 +0000
Last post2017-06-03 05:42 +0000
Articles 18 on this page of 38 — 14 participants

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Contents

  old iMac OS upgrade advice dyera@not.freeshell.org.invalid - 2017-05-30 14:02 +0000
    Re: old iMac OS upgrade advice nj_kruse@me.com (Niels Jørgen Kruse) - 2017-05-30 16:29 +0200
      Re: old iMac OS upgrade advice dyera@not.freeshell.org.invalid - 2017-05-30 16:14 +0000
        Re: old iMac OS upgrade advice nospam <nospam@nospam.invalid> - 2017-05-30 12:26 -0400
        Re: old iMac OS upgrade advice Davoud <star@sky.net> - 2017-05-30 15:56 -0400
          Re: old iMac OS upgrade advice JF Mezei <jfmezei.spamnot@vaxination.ca> - 2017-05-30 16:08 -0400
    Re: old iMac OS upgrade advice Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-05-30 11:34 -0400
      Re: old iMac OS upgrade advice christian170401@ghanart.org (Christian) - 2017-05-30 18:20 +0200
        Re: old iMac OS upgrade advice Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-05-30 13:30 -0400
      Re: old iMac OS upgrade advice dyera@not.freeshell.org.invalid - 2017-05-30 16:19 +0000
        Re: old iMac OS upgrade advice nospam <nospam@nospam.invalid> - 2017-05-30 12:26 -0400
          Re: old iMac OS upgrade advice Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-06-03 05:49 +0000
        Re: old iMac OS upgrade advice Jolly Roger <jollyroger@pobox.com> - 2017-05-30 17:14 +0000
          Re: old iMac OS upgrade advice Alan Baker <alangbaker@telus.net> - 2017-05-30 10:17 -0700
            Re: old iMac OS upgrade advice Jolly Roger <jollyroger@pobox.com> - 2017-05-30 17:27 +0000
              Re: old iMac OS upgrade advice Alan Baker <alangbaker@telus.net> - 2017-05-30 10:32 -0700
                Re: old iMac OS upgrade advice dyera@not.freeshell.org.invalid - 2017-05-31 13:41 +0000
                  Re: old iMac OS upgrade advice nospam <nospam@nospam.invalid> - 2017-05-31 10:08 -0400
                    Re: old iMac OS upgrade advice Barry Margolin <barmar@alum.mit.edu> - 2017-05-31 11:32 -0400
                      Re: old iMac OS upgrade advice nospam <nospam@nospam.invalid> - 2017-05-31 11:41 -0400
                        Re: old iMac OS upgrade advice Barry Margolin <barmar@alum.mit.edu> - 2017-06-02 11:38 -0400
                          Re: old iMac OS upgrade advice nospam <nospam@nospam.invalid> - 2017-06-02 12:34 -0400
                    Re: old iMac OS upgrade advice Andreas Rutishauser <andreas@macandreas.ch> - 2017-06-01 07:01 +0200
                  Re: old iMac OS upgrade advice dempson@actrix.gen.nz (David Empson) - 2017-06-01 09:49 +1200
                  Re: old iMac OS upgrade advice "John Varela" <newlamps@verizon.net> - 2017-06-02 01:17 +0000
                  Re: old iMac OS upgrade advice Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-06-03 05:47 +0000
          Re: old iMac OS upgrade advice Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-05-30 13:37 -0400
        Re: old iMac OS upgrade advice Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-05-30 13:28 -0400
          Re: old iMac OS upgrade advice dyera@not.freeshell.org.invalid - 2017-05-30 18:42 +0000
          Re: old iMac OS upgrade advice Andreas Rutishauser <andreas@macandreas.ch> - 2017-05-31 06:44 +0200
            Re: old iMac OS upgrade advice Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-05-31 08:47 -0400
      Re: old iMac OS upgrade advice Jolly Roger <jollyroger@pobox.com> - 2017-05-30 17:13 +0000
      Re: old iMac OS upgrade advice Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-06-03 05:45 +0000
        Re: old iMac OS upgrade advice Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-06-03 09:21 -0400
        Re: old iMac OS upgrade advice JF Mezei <jfmezei.spamnot@vaxination.ca> - 2017-06-03 12:55 -0400
          Re: old iMac OS upgrade advice Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-06-03 16:02 -0400
    Re: old iMac OS upgrade advice "John Varela" <newlamps@verizon.net> - 2017-06-02 01:15 +0000
    Re: old iMac OS upgrade advice Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-06-03 05:42 +0000

Page 2 of 2 — ← Prev page 1 [2]


#107413

FromBarry Margolin <barmar@alum.mit.edu>
Date2017-06-02 11:38 -0400
Message-ID<barmar-9822BE.11385002062017@88-209-239-213.giganet.hu>
In reply to#107390
In article <310520171141505585%nospam@nospam.invalid>,
 nospam <nospam@nospam.invalid> wrote:

> In article <barmar-6F1DA5.11323931052017@88-209-239-213.giganet.hu>,
> Barry Margolin <barmar@alum.mit.edu> wrote:
> 
> > > > If I went to the trouble of downloading el Capitan last year, should I 
> > > > install that and upgrade from there, or just scrap it and download 
> > > > Sierra 
> > > > instead?
> > > 
> > > there is no need to upgrade to el capitan if you're going to be
> > > upgrading to sierra. you can upgrade to sierra directly.
> > 
> > I don't think so. When I was trying to upgrade one of my iMacs, it said 
> > I had to go to El Cap first.
> 
> what system did it have?

Snow Leopard.

-- 
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***

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#107414

Fromnospam <nospam@nospam.invalid>
Date2017-06-02 12:34 -0400
Message-ID<020620171234518145%nospam@nospam.invalid>
In reply to#107413
In article <barmar-9822BE.11385002062017@88-209-239-213.giganet.hu>,
Barry Margolin <barmar@alum.mit.edu> wrote:

> > > > > If I went to the trouble of downloading el Capitan last year, should
> > > > > I install that and upgrade from there, or just scrap it and download 
> > > > > Sierra instead?
> > > > 
> > > > there is no need to upgrade to el capitan if you're going to be
> > > > upgrading to sierra. you can upgrade to sierra directly.
> > > 
> > > I don't think so. When I was trying to upgrade one of my iMacs, it said 
> > > I had to go to El Cap first.
> > 
> > what system did it have?
> 
> Snow Leopard.

that's why. the other versions do not need the interim step.

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#107393

FromAndreas Rutishauser <andreas@macandreas.ch>
Date2017-06-01 07:01 +0200
Message-ID<andreas-786955.07011801062017@news.individual.de>
In reply to#107388
In article <310520171008245282%nospam@nospam.invalid>,
 nospam <nospam@nospam.invalid> wrote:

> In article <ogmh5l$bt9$1@odin.sdf-eu.org>,
> <dyera@not.freeshell.org.invalid> wrote:
> 
> > Follow up question:
> > If I went to the trouble of downloading el Capitan last year, should I 
> > install that and upgrade from there, or just scrap it and download Sierra 
> > instead?
> 
> there is no need to upgrade to el capitan if you're going to be
> upgrading to sierra. you can upgrade to sierra directly.

not from Snow Leopard. You can't even download the Sierra installer from 
a 10.6.8 App Store (Version1.0.2 (63.1))

-- 
MacAndreas Rutishauser, <http://www.MacAndreas.ch> 
EDV-Dienstleistungen, Hard- und Software, Internet und Netzwerk
Beratung, Unterstuetzung und Schulung
<mailto:andreas@MacAndreas.ch>, Fon: 044 / 721 36 47

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#107392

Fromdempson@actrix.gen.nz (David Empson)
Date2017-06-01 09:49 +1200
Message-ID<1n6xpny.10v18kl1kaq1y9N%dempson@actrix.gen.nz>
In reply to#107386
<dyera@not.freeshell.org.invalid> wrote:

> Follow up question:
> If I went to the trouble of downloading el Capitan last year, should I
> install that and upgrade from there, or just scrap it and download Sierra
> instead?

If your system is currently running Snow Leopard (10.6.x), you cannot
upgrade it directly to Sierra (10.12.x), because the Sierra installer
requires Lion (10.7.x) as a minimum to upgrade an existing system.

You can't even download the Sierra installer from a Snow Leopard system.

If you were going to do an erase and clean install, you could install
Sierra (e.g. from a bootable installer set up using a Mac running a
newer OS version), but the resulting installation of Sierra would not be
able to migrate from a backup of your Snow Leopard system, because
Sierra's migration/setup assistant also has Lion as a minimum for the
source of the migration.

Therefore it is easiest to use the El Capitan (10.11.x) installer you
already have to upgrade from Snow Leopard to El Capitan, and from there
you will be able to upgrade to Sierra.

-- 
David Empson
dempson@actrix.gen.nz

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#107406

From"John Varela" <newlamps@verizon.net>
Date2017-06-02 01:17 +0000
Message-ID<51W5y0sPNk52-pn2-6C1YGlyOkNdz@localhost>
In reply to#107386
On Wed, 31 May 2017 13:41:09 UTC, dyera@not.freeshell.org.invalid 
wrote:

> Follow up question:
> If I went to the trouble of downloading el Capitan last year, should I 
> install that and upgrade from there, or just scrap it and download Sierra 
> instead?

If you buy your new drive at an Apple Store they will load Sierra on
it.

-- 
John Varela

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#107420

FromLewis <g.kreme@gmail.com.dontsendmecopies>
Date2017-06-03 05:47 +0000
Message-ID<slrnoj4jih.85p.g.kreme@snow.local>
In reply to#107386
In message <ogmh5l$bt9$1@odin.sdf-eu.org> dyera@not.freeshell.org.invalid <dyera@not.freeshell.org.invalid> wrote:
> Follow up question:
> If I went to the trouble of downloading el Capitan last year, should I 
> install that and upgrade from there, or just scrap it and download Sierra 
> instead?

If you have a thumb drive install for Sierra, install Sierra. If you
want to update, taht's more complicated.


-- 
My little brother got his arm stuck in the microwave. So my mom had to
take him to the hospital. My grandma dropped acid this morning, and she
freaked out. She hijacked a busload of penguins. So it's sort of a
family crisis. Bye!

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#107338

FromAlan Browne <alan.browne@freelunchvideotron.ca>
Date2017-05-30 13:37 -0400
Message-ID<ArudnUtuCox3MLDEnZ2dnUU7-bmdnZ2d@giganews.com>
In reply to#107331
On 2017-05-30 13:14, Jolly Roger wrote:
> On 2017-05-30, dyera@not.freeshell.org.invalid <dyera@not.freeshell.org.invalid> wrote:
>> On 2017-05-30, Alan Browne <alan.browne@freelunchvideotron.ca> wrote in <DcidnbCq6ZSfDLDEnZ2dnUU7-fnNnZ2d@giganews.com>:
>>> On 2017-05-30 10:02, dyera@not.freeshell.org.invalid wrote:
>> <snip>
>>>>
>>>> This is "iMac10,1" with Intel Core 2 Duo 3.06 GHz.
>>>
>>> Sierra should install.
>>>
>>> SSD will certainly give it a boost and I'd suggest that you bump the
>>> memory to at least 16 GB if not already there or beyond.
>>>
>> My upgrade parts were a Christmas gift, so I am not sure if I got any
>> memory or just the SSD swapping kit.
>
> You can easily tell how much RAM is installed by choosing About This Mac
> from the Apple menu at the top of the screen.

With a dead machine probably easier to just pop the mem sticks and add 
them up.

-- 
"If war is God's way of teaching Americans geography, then
recession is His way of teaching everyone a little economics."
   ..Raj Patel, The Value of Nothing.

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#107335

FromAlan Browne <alan.browne@freelunchvideotron.ca>
Date2017-05-30 13:28 -0400
Message-ID<ArudnUluCoxJNrDEnZ2dnUU7-bnNnZ2d@giganews.com>
In reply to#107326
On 2017-05-30 12:19, dyera@not.freeshell.org.invalid wrote:
> On 2017-05-30, Alan Browne <alan.browne@freelunchvideotron.ca> wrote in <DcidnbCq6ZSfDLDEnZ2dnUU7-fnNnZ2d@giganews.com>:
>> On 2017-05-30 10:02, dyera@not.freeshell.org.invalid wrote:
> <snip>
>>>
>>> This is "iMac10,1" with Intel Core 2 Duo 3.06 GHz.
>>
>> Sierra should install.
>>
>> SSD will certainly give it a boost and I'd suggest that you bump the
>> memory to at least 16 GB if not already there or beyond.
>>
>> So if 8 GB over 2 slots is installed, then simply add 16 GB for 24 GB total.
>>
>> Or if you have 8 GB installed over 4 slots, then remove 4 GB (2 x 2) and
>> add 16 GB (2 x 8) for a total of 20 GB.
>>
>> Consider even going whole hog (4 x 8) for a total of 32 GB.
>>
>> With more memory installed the OS takes up more room ans swaps less
>> often which will make the machine PDQ.
>>
> My upgrade parts were a Christmas gift, so I am not sure if I got any
> memory or just the SSD swapping kit.
>
> I've been nervous about taking an iMac apart ever since I apparently
> killed my Cube with an excess of modifications.

It's not a hard change, but it takes time and care.  Assuming you have 
all the small torx screwdrivers that you'll need, allocate 1 hour for 
the job.  (Can be done in less than 30 minutes if you've done it before.

If not sure, then order a screwdriver kit from iFixIt.

Be very careful of the small wires around the camera/microphone.

The screws are of different sizes, so get a few cups to hold them.  Use 
a piece of paper to record where the different ones go.

Do look at the teardown sequence for your model at iFixIt.

-- 
"If war is God's way of teaching Americans geography, then
recession is His way of teaching everyone a little economics."
   ..Raj Patel, The Value of Nothing.

[toc] | [prev] | [next] | [standalone]


#107340

Fromdyera@not.freeshell.org.invalid
Date2017-05-30 18:42 +0000
Message-ID<ogkee1$ol4$1@odin.sdf-eu.org>
In reply to#107335
On 2017-05-30, Alan Browne <alan.browne@freelunchvideotron.ca> wrote in <ArudnUluCoxJNrDEnZ2dnUU7-bnNnZ2d@giganews.com>:
> On 2017-05-30 12:19, dyera@not.freeshell.org.invalid wrote:
<snip>
>> My upgrade parts were a Christmas gift, so I am not sure if I got any
>> memory or just the SSD swapping kit.
>>
>> I've been nervous about taking an iMac apart ever since I apparently
>> killed my Cube with an excess of modifications.
>
> It's not a hard change, but it takes time and care.  Assuming you have 
> all the small torx screwdrivers that you'll need, allocate 1 hour for 
> the job.  (Can be done in less than 30 minutes if you've done it before.
>
> If not sure, then order a screwdriver kit from iFixIt.
>
> Be very careful of the small wires around the camera/microphone.
>
> The screws are of different sizes, so get a few cups to hold them.  Use 
> a piece of paper to record where the different ones go.
>
> Do look at the teardown sequence for your model at iFixIt.
>

I like the idea of having a few different containers to segregate screws. 
Getting smudges and fuzz into the display has made me nervous but I'm sure 
I can do this.

Hopefully an adequate amount of memory was included in my Christmas gift.

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#107379

FromAndreas Rutishauser <andreas@macandreas.ch>
Date2017-05-31 06:44 +0200
Message-ID<andreas-026311.06444031052017@news.individual.de>
In reply to#107335
In article <ArudnUluCoxJNrDEnZ2dnUU7-bnNnZ2d@giganews.com>,
 Alan Browne <alan.browne@freelunchvideotron.ca> wrote:

> On 2017-05-30 12:19, dyera@not.freeshell.org.invalid wrote:
> > On 2017-05-30, Alan Browne <alan.browne@freelunchvideotron.ca> wrote in 
> > <DcidnbCq6ZSfDLDEnZ2dnUU7-fnNnZ2d@giganews.com>:
> >> On 2017-05-30 10:02, dyera@not.freeshell.org.invalid wrote:
> > <snip>
> >>>
> >>> This is "iMac10,1" with Intel Core 2 Duo 3.06 GHz.
> >>
> >> Sierra should install.
> >>
> >> SSD will certainly give it a boost and I'd suggest that you bump the
> >> memory to at least 16 GB if not already there or beyond.
> >>
> >> So if 8 GB over 2 slots is installed, then simply add 16 GB for 24 GB 
> >> total.
> >>
> >> Or if you have 8 GB installed over 4 slots, then remove 4 GB (2 x 2) and
> >> add 16 GB (2 x 8) for a total of 20 GB.
> >>
> >> Consider even going whole hog (4 x 8) for a total of 32 GB.

iMac10,1 will take a maximum of 16GB.

> >>
> >> With more memory installed the OS takes up more room ans swaps less
> >> often which will make the machine PDQ.
> >>
> > My upgrade parts were a Christmas gift, so I am not sure if I got any
> > memory or just the SSD swapping kit.
> >
> > I've been nervous about taking an iMac apart ever since I apparently
> > killed my Cube with an excess of modifications.
> 
> It's not a hard change, but it takes time and care.  Assuming you have 
> all the small torx screwdrivers that you'll need, allocate 1 hour for 
> the job.  (Can be done in less than 30 minutes if you've done it before.

Exactly 2 Torx screwdrivers are needed: a T8 and a T10
> 
> If not sure, then order a screwdriver kit from iFixIt.

Maybe they are already included in the parts from OWC.
> 
> Be very careful of the small wires around the camera/microphone.

You must be writing sbout a different iMac model...

What has to be taken care of with iMac10,1 (and aother 2009/2010 iMacs), 
is the disk thermal sensor. i.e. OWC is selling such a thing:
<https://eshop.macsales.com/item/OWC/DIDIMACHDD09/>

Cheers
Andreas

-- 
MacAndreas Rutishauser, <http://www.MacAndreas.ch> 
EDV-Dienstleistungen, Hard- und Software, Internet und Netzwerk
Beratung, Unterstuetzung und Schulung
<mailto:andreas@MacAndreas.ch>, Fon: 044 / 721 36 47

[toc] | [prev] | [next] | [standalone]


#107384

FromAlan Browne <alan.browne@freelunchvideotron.ca>
Date2017-05-31 08:47 -0400
Message-ID<0bydnTJ5_criJrPEnZ2dnUU7-bHNnZ2d@giganews.com>
In reply to#107379
On 2017-05-31 00:44, Andreas Rutishauser wrote:
> In article <ArudnUluCoxJNrDEnZ2dnUU7-bnNnZ2d@giganews.com>,
>  Alan Browne <alan.browne@freelunchvideotron.ca> wrote:
>
>> On 2017-05-30 12:19, dyera@not.freeshell.org.invalid wrote:
>>> On 2017-05-30, Alan Browne <alan.browne@freelunchvideotron.ca> wrote in
>>> <DcidnbCq6ZSfDLDEnZ2dnUU7-fnNnZ2d@giganews.com>:
>>>> On 2017-05-30 10:02, dyera@not.freeshell.org.invalid wrote:
>>> <snip>
>>>>>
>>>>> This is "iMac10,1" with Intel Core 2 Duo 3.06 GHz.
>>>>
>>>> Sierra should install.
>>>>
>>>> SSD will certainly give it a boost and I'd suggest that you bump the
>>>> memory to at least 16 GB if not already there or beyond.
>>>>
>>>> So if 8 GB over 2 slots is installed, then simply add 16 GB for 24 GB
>>>> total.
>>>>
>>>> Or if you have 8 GB installed over 4 slots, then remove 4 GB (2 x 2) and
>>>> add 16 GB (2 x 8) for a total of 20 GB.
>>>>
>>>> Consider even going whole hog (4 x 8) for a total of 32 GB.
>
> iMac10,1 will take a maximum of 16GB.


You're correct.  I was spec'ing for the i5/i7 version.

>
>>>>
>>>> With more memory installed the OS takes up more room ans swaps less
>>>> often which will make the machine PDQ.
>>>>
>>> My upgrade parts were a Christmas gift, so I am not sure if I got any
>>> memory or just the SSD swapping kit.
>>>
>>> I've been nervous about taking an iMac apart ever since I apparently
>>> killed my Cube with an excess of modifications.
>>
>> It's not a hard change, but it takes time and care.  Assuming you have
>> all the small torx screwdrivers that you'll need, allocate 1 hour for
>> the job.  (Can be done in less than 30 minutes if you've done it before.
>
> Exactly 2 Torx screwdrivers are needed: a T8 and a T10
>>
>> If not sure, then order a screwdriver kit from iFixIt.
>
> Maybe they are already included in the parts from OWC.
>>
>> Be very careful of the small wires around the camera/microphone.
>
> You must be writing sbout a different iMac model...
>
> What has to be taken care of with iMac10,1 (and aother 2009/2010 iMacs),
> is the disk thermal sensor. i.e. OWC is selling such a thing:
> <https://eshop.macsales.com/item/OWC/DIDIMACHDD09/>

True enough.  Still easy enough to do and he should have that if the kit 
he received was for that model.


-- 
"If war is God's way of teaching Americans geography, then
recession is His way of teaching everyone a little economics."
   ..Raj Patel, The Value of Nothing.

[toc] | [prev] | [next] | [standalone]


#107330

FromJolly Roger <jollyroger@pobox.com>
Date2017-05-30 17:13 +0000
Message-ID<ep5nhqFd713U2@mid.individual.net>
In reply to#107320
On 2017-05-30, Alan Browne <alan.browne@freelunchvideotron.ca> wrote:
> On 2017-05-30 10:02, dyera@not.freeshell.org.invalid wrote:
>> My iMac hard disk died, so I have parts on hand from OWC to install SSD
>> and bring the iMac back to life. It has been dead since my wedding last
>> fall so I'm anxious to get it running and look at wedding photos on its
>> nice display!
>>
>> It was all backed up to an external disk.
>>
>> As much as I'd love to stick with Snow Leopard, it is time to put a newer
>> OS on it. (After all I could always use my SL backup when I want old
>> softward)
>>
>> Therefore, I ask for opinions about how current I can make this old iMac
>> and have tolerable performance.
>>
>> This is "iMac10,1" with Intel Core 2 Duo 3.06 GHz.
>
> Sierra should install.
>
> SSD will certainly give it a boost and I'd suggest that you bump the 
> memory to at least 16 GB if not already there or beyond.

8 GB is sufficient for Sierra for most use cases. More RAM is always
better, of course; but unless you are doing memory-intensive work, 8 GB
will do just fine.

-- 
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.

JR

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#107419

FromLewis <g.kreme@gmail.com.dontsendmecopies>
Date2017-06-03 05:45 +0000
Message-ID<slrnoj4jf2.85p.g.kreme@snow.local>
In reply to#107320
In message <DcidnbCq6ZSfDLDEnZ2dnUU7-fnNnZ2d@giganews.com> Alan Browne <alan.browne@freelunchvideotron.ca> wrote:
> So if 8 GB over 2 slots is installed, then simply add 16 GB for 24 GB total.

> Or if you have 8 GB installed over 4 slots, then remove 4 GB (2 x 2) and 
> add 16 GB (2 x 8) for a total of 20 GB.

> Consider even going whole hog (4 x 8) for a total of 32 GB.

Only the 27" will take 32GB. The 21.5" is limited to 16GB.

-- 
The more you tighten your grip, Tarkin, the more star systems will slip
through your fingers.

[toc] | [prev] | [next] | [standalone]


#107425

FromAlan Browne <alan.browne@freelunchvideotron.ca>
Date2017-06-03 09:21 -0400
Message-ID<5Oadnf06PbBsKq_EnZ2dnUU7-KudnZ2d@giganews.com>
In reply to#107419
On 2017-06-03 01:45, Lewis wrote:
> In message <DcidnbCq6ZSfDLDEnZ2dnUU7-fnNnZ2d@giganews.com> Alan Browne <alan.browne@freelunchvideotron.ca> wrote:
>> So if 8 GB over 2 slots is installed, then simply add 16 GB for 24 GB total.
>
>> Or if you have 8 GB installed over 4 slots, then remove 4 GB (2 x 2) and
>> add 16 GB (2 x 8) for a total of 20 GB.
>
>> Consider even going whole hog (4 x 8) for a total of 32 GB.
>
> Only the 27" will take 32GB. The 21.5" is limited to 16GB.
>

Not only that, as Andreas pointed out 3 days ago, the Core 2 Duo is also 
limited to 16 GB (incl. 27").


-- 
"If war is God's way of teaching Americans geography, then
recession is His way of teaching everyone a little economics."
   ..Raj Patel, The Value of Nothing.

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#107426

FromJF Mezei <jfmezei.spamnot@vaxination.ca>
Date2017-06-03 12:55 -0400
Message-ID<5932ea05$0$57957$c3e8da3$c8b7d2e6@news.astraweb.com>
In reply to#107419
On 2017-06-03 01:45, Lewis wrote:

> Only the 27" will take 32GB. The 21.5" is limited to 16GB.

Are these the Apple "official" limits or the real world limits as tested
by outfits that sell memory?

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#107432

FromAlan Browne <alan.browne@freelunchvideotron.ca>
Date2017-06-03 16:02 -0400
Message-ID<StadneBTc6tFiK7EnZ2dnUU7-XnNnZ2d@giganews.com>
In reply to#107426
On 2017-06-03 12:55, JF Mezei wrote:
> On 2017-06-03 01:45, Lewis wrote:
>
>> Only the 27" will take 32GB. The 21.5" is limited to 16GB.
>
> Are these the Apple "official" limits or the real world limits as tested
> by outfits that sell memory?
>

The iMac in question goes to 16 GB with Core 2 Duo or up 32 GB with 
i5/i7 if it's 27".

The later being real world, not Apple spec.

-- 
"If war is God's way of teaching Americans geography, then
recession is His way of teaching everyone a little economics."
   ..Raj Patel, The Value of Nothing.

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#107405

From"John Varela" <newlamps@verizon.net>
Date2017-06-02 01:15 +0000
Message-ID<51W5y0sPNk52-pn2-3jcTD4VuOOx9@localhost>
In reply to#107318
On Tue, 30 May 2017 14:02:43 UTC, dyera@not.freeshell.org.invalid 
wrote:

> My iMac hard disk died, so I have parts on hand from OWC to install SSD 
> and bring the iMac back to life. It has been dead since my wedding last 
> fall so I'm anxious to get it running and look at wedding photos on its 
> nice display!
> 
> It was all backed up to an external disk.
> 
> As much as I'd love to stick with Snow Leopard, it is time to put a newer 
> OS on it. (After all I could always use my SL backup when I want old 
> softward)
> 
> Therefore, I ask for opinions about how current I can make this old iMac 
> and have tolerable performance.
> 
> This is "iMac10,1" with Intel Core 2 Duo 3.06 GHz.
 
I am typing this on an identical iMac 10,1 running Sierra. I expect 
that Sierra is the last version that this machine will be able to 
run.

-- 
John Varela

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#107418

FromLewis <g.kreme@gmail.com.dontsendmecopies>
Date2017-06-03 05:42 +0000
Message-ID<slrnoj4j98.85p.g.kreme@snow.local>
In reply to#107318
In message <ogju23$4v5$1@odin.sdf-eu.org> dyera@not.freeshell.org.invalid <dyera@not.freeshell.org.invalid> wrote:
> My iMac hard disk died, so I have parts on hand from OWC to install SSD 
> and bring the iMac back to life. It has been dead since my wedding last 
> fall so I'm anxious to get it running and look at wedding photos on its 
> nice display!

> It was all backed up to an external disk.

> As much as I'd love to stick with Snow Leopard, it is time to put a newer 
> OS on it. (After all I could always use my SL backup when I want old 
> softward)

> Therefore, I ask for opinions about how current I can make this old iMac 
> and have tolerable performance.

> This is "iMac10,1" with Intel Core 2 Duo 3.06 GHz.

Put the max RAM 916GB) in it and install Sierra.


-- 
"Give a man a fire and he's warm for a day, but set fire to him an he's
warm for the rest of his life."

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