Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.sys.mac.system > #72653 > unrolled thread

Upgrading Snow Leopard to Yosemite: Gotchas? Risks?

Back to article view | Back to comp.sys.mac.system

Contents

  Upgrading Snow Leopard to Yosemite: Gotchas? Risks? "Auric__" <not.my.real@email.address> - 2015-04-05 03:43 +0000
    Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Michelle Steiner <michelle@michelle.org> - 2015-04-04 21:02 -0700
    Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Your Name <YourName@YourISP.com> - 2015-04-05 16:03 +1200
      Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Me, myself and I <baiheli.pip.li@xs4all.nl> - 2015-04-05 12:12 +0200
    Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? sctvguy1 <sctvguy1@invalid.net> - 2015-04-05 04:33 +0000
      Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Michael Vilain <vilain@NOspamcop.net> - 2015-04-05 14:57 -0700
        Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? sctvguy1 <sctvguy1@invalid.net> - 2015-04-05 22:57 +0000
          Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Your Name <YourName@YourISP.com> - 2015-04-06 11:57 +1200
            Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? sctvguy1 <sctvguy1@invalid.net> - 2015-04-06 03:57 +0000
              Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Your Name <YourName@YourISP.com> - 2015-04-06 16:33 +1200
                Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? sctvguy1 <sctvguy1@invalid.net> - 2015-04-06 04:56 +0000
                Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2015-04-06 01:00 -0400
                  Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Your Name <YourName@YourISP.com> - 2015-04-06 17:43 +1200
                  Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? sctvguy1 <sctvguy1@invalid.net> - 2015-04-06 15:53 +0000
              Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Michael Vilain <vilain@NOspamcop.net> - 2015-04-06 05:21 -0700
                Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Warren Oates <warren.oates@gmail.com> - 2015-04-06 09:10 -0400
                  Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? sctvguy1 <sctvguy1@invalid.net> - 2015-04-06 15:51 +0000
                  Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Michael Vilain <vilain@NOspamcop.net> - 2015-04-06 20:38 -0700
                Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2015-04-06 13:25 +0000
                  Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2015-04-07 02:25 +0000
                Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? sctvguy1 <sctvguy1@invalid.net> - 2015-04-06 15:47 +0000
              Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Alan Browne <alan.browne@freelunchvideotron.ca> - 2015-04-06 10:01 -0400
    Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? dorayme <do_ray_me@bigpond.com> - 2015-04-05 14:56 +1100
    Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2015-04-05 01:31 -0400
      Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Savageduck <savageduck1@{REMOVESPAM}me.com> - 2015-04-04 22:45 -0700
        Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2015-04-05 04:13 -0400
      Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Jolly Roger <jollyroger@pobox.com> - 2015-04-05 13:47 +0000
    Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? me@home.spamsucks.ca (Király) - 2015-04-05 15:59 +0000
      Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Jolly Roger <jollyroger@pobox.com> - 2015-04-05 16:15 +0000
    Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Warren Oates <warren.oates@gmail.com> - 2015-04-05 12:59 -0400
    Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Jolly Roger <jollyroger@pobox.com> - 2015-04-05 17:22 +0000
    Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Paul Magnussen <magiconinc@earthlink.net> - 2015-04-05 14:08 -0700
      Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Electric Comet <electric-comet@mail.invalid> - 2015-04-06 13:49 -0700
        Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Tim Streater <timstreater@greenbee.net> - 2015-04-06 21:55 +0000
          Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2015-04-06 23:51 -0400
            Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? nospam <nospam@nospam.invalid> - 2015-04-06 23:54 -0400
              Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2015-04-08 09:53 +0000
            Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? dempson@actrix.gen.nz (David Empson) - 2015-04-07 18:08 +1200
              Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2015-04-07 03:38 -0400
                Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Warren Oates <warren.oates@gmail.com> - 2015-04-07 09:35 -0400
        Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Your Name <YourName@YourISP.com> - 2015-04-07 13:25 +1200
          Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? dempson@actrix.gen.nz (David Empson) - 2015-04-07 18:08 +1200
            Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Electric Comet <electric-comet@mail.invalid> - 2015-04-07 09:06 -0700
    Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Electric Comet <electric-comet@mail.invalid> - 2015-04-06 13:52 -0700
    Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? John Albert <j.albert@snet.net> - 2015-04-08 21:00 -0400
      Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2015-04-09 12:48 +0000
        Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? John Albert <j.albert@snet.net> - 2015-04-10 22:23 -0400
          Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Your Name <YourName@YourISP.com> - 2015-04-11 14:49 +1200
          Re: Upgrading Snow Leopard to Yosemite: Gotchas? Risks? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2015-04-11 12:17 +0000

Page 3 of 3 — ← Prev page 1 2 [3]

#72752

In article <mfuri0$8lc$1@dont-email.me>, Electric Comet
<electric-comet@mail.invalid> wrote:
> On Sun, 05 Apr 2015 14:08:08 -0700
> Paul Magnussen <magiconinc@earthlink.net> wrote:
> > 
> > You know old PowerPC apps won't work any more, right?
> 
> Not even via emulation?

They will work on separate emulator software like SheepShaver ...
assuming you can get SheepShaver to run the appropriate version of OS X
the application needs.

They won't run directly in newer Mac OS X versions because Apple
removed the Rosetta translation software. (Some people claim to have
got it working by copying system files from older versions of Mac OS X
into a Rosetta-less version.)

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

#72775

Your Name <YourName@YourISP.com> wrote:

> In article <mfuri0$8lc$1@dont-email.me>, Electric Comet
> <electric-comet@mail.invalid> wrote:
> > On Sun, 05 Apr 2015 14:08:08 -0700
> > Paul Magnussen <magiconinc@earthlink.net> wrote:
> > > 
> > > You know old PowerPC apps won't work any more, right?
> > 
> > Not even via emulation?

What you can do is run a copy of Leopard Server or Snow Leopard Server
in virtualisation software (VMware Fusion, Parallels Desktop or
VirtualBox) on a later version of Mac OS X. Rosetta and therefore most
Mac OS X PowerPC apps work in the virtualised OS.

The non-server versions of Leopard and Snow Leopard are not supported by
VM software (due to licensing issues) but can be made to work in some
cases through various hacks. Since Apple reduced the price of Snow
Leopard Server to the same as the non-server version, there isn't much
point hacking around the restrictions to get the non-server version
working.

> They will work on separate emulator software like SheepShaver ...
> assuming you can get SheepShaver to run the appropriate version of OS X
> the application needs.

SheepShaver emulates a Mac running System 7.5.2 through 9.0.4 but
doesn't work properly with Mac OS 9.1 or later, and a Mac OS X guest is
not supported at all. Therefore Mac OS X PowerPC applications won't work
in SheepShaver, unless they happen to be old enough to also run in Mac
OS 9.0.4.

> They won't run directly in newer Mac OS X versions because Apple
> removed the Rosetta translation software. (Some people claim to have
> got it working by copying system files from older versions of Mac OS X
> into a Rosetta-less version.)

Cite? I didn't spot any such claim from various Google searches, just
some early attempts with little progress.

Rosetta is more than just a few files: getting it working in Lion or
later would require a recompiled kernel with PowerPC code enabled, plus
a large number of system libraries and frameworks with PowerPC code,
because PowerPC applications running under Rosetta require PowerPC
versions of all code called within their process.

Simply copying the libraries and frameworks from an older system would
almost certainly result in a broken system, because of mutual
incompatibilities between the older libraries/frameworks and other parts
of the system which have changed.

A more complex merge of just the PowerPC code from an earlier system,
leaving the Intel code alone, might result in the Intel parts of the
system still working, but the copied PowerPC code would still have
incompatibilities. (Any such merging of code would break code signing in
recent OS X versions, also resulting in a broken system.)

Doing this without breaking the system would require the source code to
all the libraries and frameworks, so updated PowerPC versions can be
built from source. Most of them are closed source, and Apple isn't going
to provide access to the source code.

-- 
David Empson
dempson@actrix.gen.nz

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

#72792

On Tue, 7 Apr 2015 18:08:46 +1200
dempson@actrix.gen.nz (David Empson) wrote:

> What you can do is run a copy of Leopard Server or Snow Leopard Server
> in virtualisation software (VMware Fusion, Parallels Desktop or
> VirtualBox) on a later version of Mac OS X. Rosetta and therefore most
> Mac OS X PowerPC apps work in the virtualised OS.

Interestin
this is useful info to consider










 




 

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

#72734

On Sun, 5 Apr 2015 03:43:53 +0000 (UTC)
"Auric__" <not.my.real@email.address> wrote:



> My (used) iMac came with Snow Leopard (10.6.8). Coming from the Linux
> & Windows world, I've been very hesitant to upgrade the system...
> especially since what I already have *WORKS*.

There is an issue for subscribers of snow leopard
Search for "Folder Action Dispatcher"

seems to only be a problem for snow leopard subscribers that have
folder actions defined


can't get more info from aapple since their bugbase is secretive
















 

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

#72892

On 4/4/15 11:43 PM, Auric__ wrote:
> My (used) iMac came with Snow Leopard (10.6.8). Coming from the Linux &
> Windows world, I've been very hesitant to upgrade the system... especially
> since what I already have *WORKS*.
>
> But now, there is a program that I want, which says that it needs at least
> Lion (and recommends Mountain Lion or newer). So, with the store offering the
> free upgrade to Yosemite, I'm strongly considering going through with it.

My opinions only.

To go from 10.6.8 to 10.8.5 shouldn't be a problem, but...

... to go to 10.10.3, you're probably going to want an SSD (rather than 
a platter-based hard drive).
Yosemite will "run" fine from an SSD.
But it will seem more like "walking" booting and operating from a 
platter-based drive.

If I'm not mistaken, you must also be aware that once you "move beyond" 
10.6.8, you lose Rosetta so you'll no longer be able to run apps that 
are still in PPC code. This may or may not be a hurdle for you.

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

#72921

In message <5525ceea$0$11853$2c56edd9@usenetrocket.com> 
  John Albert <j.albert@snet.net> wrote:
> On 4/4/15 11:43 PM, Auric__ wrote:
>> My (used) iMac came with Snow Leopard (10.6.8). Coming from the Linux &
>> Windows world, I've been very hesitant to upgrade the system... especially
>> since what I already have *WORKS*.
>>
>> But now, there is a program that I want, which says that it needs at least
>> Lion (and recommends Mountain Lion or newer). So, with the store offering the
>> free upgrade to Yosemite, I'm strongly considering going through with it.

> My opinions only.

> To go from 10.6.8 to 10.8.5 shouldn't be a problem, but...

> ... to go to 10.10.3, you're probably going to want an SSD (rather than 
> a platter-based hard drive).
> Yosemite will "run" fine from an SSD.
> But it will seem more like "walking" booting and operating from a 
> platter-based drive.

Nothing about taht is true. Yosemite runs jsut as well from an spinning
drive. Yes, it runs better from an SSD. So will 10.8. And 10.5. And 10.0
Public Beta. And Windows 3.11. And ProDOS. and System V.

That said, there is no reason to install 10.7-10.9 at this point on any
machine that can run 10.10.

-- 
C code. C code run. Run, code, run.

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

#73044

On 4/9/15 8:48 AM, Lewis wrote:
> Nothing about taht is true. Yosemite runs jsut as well from an spinning
> drive.

I suggest you trying running it from a 4200rpm drive in a firewire400 
enclosure... ;)    (I did)

There have been numerous reports (at places like forums.macrumors.com 
and macintouch.com) about the sluggishness of Yosemite on a 
platter-based drive. Even Ric Ford, who runs macintouch, complained 
about it and remarked how much of an improvement he experienced simply 
by changing from a platter based drive to an SSD.

Actually, I'm typing this right now while running Yosemite from an 
external Seagate drive (may be 7200rpm, don't know) over a firewire800 
connection on a late-2012 Mac Mini. Runs pretty good, but doesn't match 
the performance of my "regular" OS which is 10.8.5 (booting and running 
from an SSD in a USB3/SATA dock).

There is "plenty of reason" to keep using an older version of the OS if 
you like it or need it. I still use 10.6.8 on a 2010 MacBook Pro. That, 
too, has an SSD in it, and the OS boots up in FIVE seconds from the 
first appearance of the apple to the finder. Good enough for me.

And as I said, I prefer 10.8.5 as my "main OS" on my main Mac, at least 
for now.
I will continue to experiment with Yosemite as an "alternative", for now.

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

#73045

In article <55288574$0$22174$2c56edd9@usenetrocket.com>, John Albert
<j.albert@snet.net> wrote:
> On 4/9/15 8:48 AM, Lewis wrote:
> > 
> > Nothing about taht is true. Yosemite runs jsut as well from an spinning
> > drive.
> 
> I suggest you trying running it from a 4200rpm drive in a firewire400 
> enclosure... ;)    (I did)
> 
> There have been numerous reports (at places like forums.macrumors.com 
> and macintouch.com) about the sluggishness of Yosemite on a 
> platter-based drive. Even Ric Ford, who runs macintouch, complained 
> about it and remarked how much of an improvement he experienced simply 
> by changing from a platter based drive to an SSD.
> 
> Actually, I'm typing this right now while running Yosemite from an 
> external Seagate drive (may be 7200rpm, don't know) over a firewire800 
> connection on a late-2012 Mac Mini. Runs pretty good, but doesn't match 
> the performance of my "regular" OS which is 10.8.5 (booting and running 
> from an SSD in a USB3/SATA dock).
<snip>

Apple and oranges. Of course any OS on a SSD will be faster at booting
and running than any OS on a hard drive - that's the basically the main
point of using an SSD. Try comparing 10.8.5 installed on a hard drive
(and via a Firewire 800 connection) to get a remotely sensible
comparison.

A newer software is also often slower than an older version, simply
because they add more features, drivers, etc. that have to be loaded.
That's partly why Apple and other software companies limit the hardware
requirements to newish computers - often the software would run fine on
an old model, but is considered to be too slow (for example, you can
hack Mac OS X 10.3 to run on a beige PowerMac G3, but Apple considered
it not good enough of an experience, so the minimum system requirement
is a G4).

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

#73064

In message <55288574$0$22174$2c56edd9@usenetrocket.com> 
  John Albert <j.albert@snet.net> wrote:
> On 4/9/15 8:48 AM, Lewis wrote:
>> Nothing about taht is true. Yosemite runs jsut as well from an spinning
>> drive.

> I suggest you trying running it from a 4200rpm drive in a firewire400 
> enclosure... ;)    (I did)

> There have been numerous reports (at places like forums.macrumors.com 
> and macintouch.com) about the sluggishness of Yosemite on a 
> platter-based drive. Even Ric Ford, who runs macintouch, complained 
> about it and remarked how much of an improvement he experienced simply 
> by changing from a platter based drive to an SSD.

Yes. Of course. SSDs are much faster than even the fastest spinning
drives. My 2009 Mac Book Pro is humming along quite well with an SSDs.
SSDs make everything better.

> Actually, I'm typing this right now while running Yosemite from an 
> external Seagate drive (may be 7200rpm, don't know) over a firewire800 
> connection on a late-2012 Mac Mini. Runs pretty good, but doesn't match 
> the performance of my "regular" OS which is 10.8.5 (booting and running 
> from an SSD in a USB3/SATA dock).

Of course not.

But the idea that Yosemite *requires* an SSD is absurd.

-- 
Secondly, the Earth's a Libra

[toc] | [prev] | [standalone]

Page 3 of 3 — ← Prev page 1 2 [3]

Back to top | Article view | comp.sys.mac.system

csiph-web