Re: Upgrade from 10.4 to 10.5
- From: dempson@xxxxxxxxxxxxx (David Empson)
- Date: Wed, 12 Nov 2008 09:38:43 +1300
Raff <N@xxxxxxxxxx> wrote:
I have a PowerBook with OS 10.4 currently installed. I am planning on
upgrading to Leopard 10.5 and just want to confirm that if I do the install
over the current OS that it will retain all of my files and programs and
just upgrade the OS.
Anything else to be aware of?
I agree with everyone else's major advice (complete system backup first,
use the default "upgrade" option, do some initial research if you have
any software which modifies fundamental behaviour of the operating
system, such as Application Enhancer).
In general, it is a good idea to check compatibility with all your
applications, especially if you are running older versions of some. You
may find that some older applications don't work properly (or at all)
after upgrading to 10.5.
In particular, 10.5 doesn't support the Classic environment, so all Mac
OS 9 applications will stop working.
Most Mac OS X native applications will work fine, but some may need free
updates or paid upgrades to work well with 10.5. If you tend to keep
your applications up to date and have updated them any time this year,
you are less likely to encounter problems.
Utilities are particularly likely to have compatibility problems,
because they are more dependent than most on operating system version
dependent issues.
Macintouch has a Leopard Compatibility page which lists a few
application versions with known problems.
http://www.macintouch.com/leopard/compat.html
Nobody else mentioned it yet, but it would be a good idea to confirm
your system meets the requirements for 10.5.
If you have an Aluminium PowerBook G4, it will meet the minimum
requirement for CPU speed and type.
If you have a Titanium PowerBook G4 (15"), only some of the very late
models in that series are fast enough to run 10.5. The computer must be
867 MHz or faster. (It is possible to hack around this limit, but not
straightforward.)
For all models, you must have a minimum of 512 MB of memory. I'd
recommend a lot more than that or your 10.5 experience will be
uncomfortable. 1 GB is OK, but more is better. If your system was
relying on virtual memory paging under 10.4, it will be worse in 10.5
for the same set of applications running at the same time, unless you
install more memory.
Your hard drive must have a minimum of 10 GB of free space before you
install 10.5. If you are doing an "upgrade" install, the system
components of 10.4 will be replaced, and you will end up with somewhat
less free space than before, but the installer temporarily needs close
to 10 GB. If you do an "archive and install", the old system remains on
the drive and you will have significantly less free space until you
clean up by deleting it.
--
David Empson
dempson@xxxxxxxxxxxxx
.
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