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Apple Computing Products:
macOS - Operating System
Which OS 9 for OSX?
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<blockquote data-quote="Brown Study" data-source="post: 546284" data-attributes="member: 3889"><p>You should be able to install OS 9 onto the same disk that has OS X on it, but I wouldn't recommend it.</p><p></p><p>You should make every effort to back up all your OS X data then reformat the disk into at least two partitions, one for OS 9 and one for OS X. Doing so will allow you to run third-party OS 9 repair programs, such as Norton Disk Doctor and Disk Warrior for OS 9. It's a gold-plated certainty you'll need one or both when OS 9 takes a dive, and it will. But you can't fix OS 9 with either of those repair apps when OS X is on the same partition. The repair apps will destroy OS X.</p><p></p><p>I have a G4 running 9 and X, and I kept 9 because I, too, am running QuarkXpress for 9 — two versions, 3.2 and 4.1. But the disk is partitioned into three, so I can fix my main 9 partition with the repair apps residing on the other, small, 9 partition. All three partitions are bootable.</p><p></p><p>When everything is working properly, and whether you partition your drive or not, you should be able to choose the startup system from the Startup Disk control panel in OS 9 and its equivalent in X. Or you can hold down the Option key when starting the machine until a choice of systems appears on the screen. You need 9.1 because it can be updated to 9.2.2, needed for integration with X. Photoshop 7, for instance, will run on 9 if it's loaded onto X, and will run in X if it's loaded onto the 9 partition.</p><p></p><p>I've tried to run Quark through System X's Classic mode, but it's awful. Pages won't redraw properly, the cursor disappears, type and picture boxes don't show up until the page is window-shaded then opened again, and even Quark's libraries cause problems. There are a couple of free Quark extensions available that mitigate these problems, but neither work very well. That's why I run OS 9 when I need Quark.</p><p></p><p><strong>Edited to add:</strong> Once you have 9 installed, you don't need the install disk. You can back it all up (all 9's guts are in the System folder) to a DVD or whatever, and never look at the install disk again.</p></blockquote><p></p>
[QUOTE="Brown Study, post: 546284, member: 3889"] You should be able to install OS 9 onto the same disk that has OS X on it, but I wouldn't recommend it. You should make every effort to back up all your OS X data then reformat the disk into at least two partitions, one for OS 9 and one for OS X. Doing so will allow you to run third-party OS 9 repair programs, such as Norton Disk Doctor and Disk Warrior for OS 9. It's a gold-plated certainty you'll need one or both when OS 9 takes a dive, and it will. But you can't fix OS 9 with either of those repair apps when OS X is on the same partition. The repair apps will destroy OS X. I have a G4 running 9 and X, and I kept 9 because I, too, am running QuarkXpress for 9 — two versions, 3.2 and 4.1. But the disk is partitioned into three, so I can fix my main 9 partition with the repair apps residing on the other, small, 9 partition. All three partitions are bootable. When everything is working properly, and whether you partition your drive or not, you should be able to choose the startup system from the Startup Disk control panel in OS 9 and its equivalent in X. Or you can hold down the Option key when starting the machine until a choice of systems appears on the screen. You need 9.1 because it can be updated to 9.2.2, needed for integration with X. Photoshop 7, for instance, will run on 9 if it's loaded onto X, and will run in X if it's loaded onto the 9 partition. I've tried to run Quark through System X's Classic mode, but it's awful. Pages won't redraw properly, the cursor disappears, type and picture boxes don't show up until the page is window-shaded then opened again, and even Quark's libraries cause problems. There are a couple of free Quark extensions available that mitigate these problems, but neither work very well. That's why I run OS 9 when I need Quark. [B]Edited to add:[/B] Once you have 9 installed, you don't need the install disk. You can back it all up (all 9's guts are in the System folder) to a DVD or whatever, and never look at the install disk again. [/QUOTE]
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Apple Computing Products:
macOS - Operating System
Which OS 9 for OSX?
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