Re: OS X on my G3
- From: dempson@xxxxxxxxxxxxx (David Empson)
- Date: Thu, 29 Dec 2005 11:21:43 +1300
joeyp770 <joeyporter@xxxxxxxxx> wrote:
> I recently installed OS X on my G3 (333Mhz, 128MR RAM, 6 Gb HDD). The
> install went smooth as silk. The machines boots into OS X with no
> problem.
Which version of Mac OS X did you install? If in doubt: About This Mac
under the Apple menu will indicate the version. Have you installed any
subsequent updates? For example, if you installed Mac OS X 10.2
"Jaguar", you might have started from 10.2 or a slightly later version
such as 10.2.3 on the install CD, but there are updates available from
Apple to take it up to 10.2.8 (plus several security updates).
Probably not relevant, but exactly which Mac model do you have? A "333
MHz G3" might be a PowerMac G3, an iMac G3 or a PowerBook G3.
> The problem I have is with the "utilities" in the "applications" folder.
> The "disk copy" gives an invalid checksum with every .dmg file I try to
> install.
This usually suggests that the method you are using to download the .dmg
files is causing the file to be damaged in some way, e.g. data
corruption or part of the file may be missing.
For example, if you were downloading .dmg files from an FTP server and
your FTP client software was using ASCII mode instead of binary mode,
this is likely to cause data corruption throughout a .dmg file.
Where are you getting these .dmg files and what software are you using
to download them? Are you downloading them directly on the Mac or on
another computer and transferring them to the Mac via floppy or some
other local method?
> If I try to drag the .dmg file in to the "applications" to install it says
> I do not have permisson to change the applications folder.
Dragging a .dmg file into the Applications folder won't achieve much: it
is the installer or application inside the mounted disk image that you
need. The disk image file itself can't be used directly.
The system doesn't care about this - you can drag anything you like into
the Applications folder, even if it isn't an application.
To use a .dmg file correctly, it needs to be double-clicked to mount the
disk image, which appears on the desktop as an additional volume (icon
looks like a floppy drive). If you are getting CRC errors it is
probably in this mounting process. Assuming it is mounted correctly,
the disk image may contain an installer or an application which you can
drag to the applications folder, depending on how the author set it up.
Once you have finished using a disk image, you drag the mounted volume
(floppy drive icon) to the trash to eject it.
A message about not having permission to change the Applications folder
suggests that you have set up your computer with multiple users, and you
are attempting to drag a file into the Applications folder while logged
in as a user which does not have administrative privileges on the
computer.
When you install Mac OS X, it prompts you for details to create the
initial user account on the computer. This account always has
administrative privileges (when created). You can subsequently create
other user accounts via System Preferences, and choose whether each
account you create is also allowed to administer the computer.
(If you create a second admin account, you can log in as the new user
and disable admin privileges on the original account. You must always
have at least one admin user on the computer, and you aren't able to
remove your own administrative privileges.)
Admin users are allowed to modify system preferences, install software
and similar tasks, as well as modify files in most places on the
computer (except for private areas of other users' home folders,
protected areas of the system software, etc.). Non-admin users have
very limited scope for modifying anything outside their "home" folder.
> I have read in some forums that this would normally mean it was a bad
> download. The invalid checksum error message said something about CRC so I
> was going to try and repair the HDD using the "Disk Utility".
CRC is a method used to verify that a file is intact. It is basically a
fancy checksum which is calculated from the file content in such a way
that any change to the file content is likely to prodcue a different CRC
value. If this fails to match the expected value then the file is known
to be damaged.
This has nothing to do with the integrity of the hard drive itself, so
you shouldn't need to repair anything.
> It says that it can not intialize the startup disk.
That's normal. You can't initialize, partition or repair the disk from
which you booted, because it is currently in use by the system software.
In order to do these tasks you have to boot from another volume, such as
the system installation CD.
> If I hold "C" down and boot from the OSX CD, then the "Disk Utility"
> can repair and verify the HDD.
As expected. There is nothing wrong with your hard disk.
It sounds like you are simply suffering from bad disk image files -
either your source has damaged files or your download method is
corrupting them.
The only other possible explanation is that the disk image support
software is not installed correctly on your system and is producing
erroneous results. This is highly unlikely.
--
David Empson
dempson@xxxxxxxxxxxxx
.
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