Solved

Running OS X and OS 9 on same Mac

Posted on 2004-10-05
9
986 Views
Last Modified: 2013-11-17
Is there any problem running OS 9.1 and OS X side by side on the same iMac (which has 500 Mhz processor speed)? I find it easier to use OS 9 for my older apps as Classic seems a bit unreliable. Any issues I should be aware of? And do I need more memory than if I was running OS X alone?

Thanks!
0
Comment
Question by:clareturpin
  • 5
  • 3
9 Comments
 
LVL 30

Assisted Solution

by:weed
weed earned 25 total points
ID: 12230174
No, no problems. You don't need any more memory either. You boot to either os 9 or os x, and so theres no extra overhead.
0
 
LVL 2

Accepted Solution

by:
jonkreisler earned 60 total points
ID: 12236951
If your hard disk has only one partition and you're running both OS 9 and OS X, as separately bootable OS's, be careful about running disk utilities while booted in OS 9. Some older versions, especially Disk Doctor, can cause problems for the OS X flle stuctures. Make sure you have the latest versions.
0
 

Author Comment

by:clareturpin
ID: 12238013
Thanks for these answers - v. helpful. Can you tell me how to find out whether my hard disk has one partition or more?
0
DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

 
LVL 2

Expert Comment

by:jonkreisler
ID: 12238502
Each partition would show up on the desktop as a separate disk icon. If you have more than one partition, you can easily see them.
0
 
LVL 2

Expert Comment

by:jonkreisler
ID: 12238571
Actually, I should rephrase my original comment.
If you are booting into OS 9, you should not run old versions of disk repair utilities on any OS X disks. The older versions can just as easily clobber files on different partitions or physical disks.
0
 
LVL 2

Expert Comment

by:jonkreisler
ID: 12238622
While I'm thinking about it, booting into OS 9 allows you unlimited access to all files on OS X disks. The file protections of OS X are meaningless to OS 9. When working in OS 9 you must be careful of how you handle any OS X disks and files.
0
 

Author Comment

by:clareturpin
ID: 12247178
Thanks. All worth knowing. In view of what you say, would you recommend using Classic for OS 9 apps, rather than switching between operating systems?
0
 
LVL 2

Expert Comment

by:jonkreisler
ID: 12248438
I have mixed feelings about Classic vs. booting OS 9.
Personally, I use both methods depending on the Mac I use at the time.
On a Mac that had been running OS 9 already, I prefer to boot OS 9. This way I avoid problems, since I tend to use a lot of utilities that add Control Panels and Extensions. These type of applications are a nightmare for Classic, since Classic doesn't support unlimited mucking with the low levels of the OS. Just try to avoid disk utilities that would affect OS X files while running  OS 9. Using disk utilities while booted in OS X to affect OS 9 files would not be a problem.
On a Mac that cannot boot OS 9, there is no choice.
On a new dual bootable machine, I prefer to try sticking with Classic. Applications like WordPerfect, Photoshop & Illustrator work nicely with Classic and since they don't need to install Extensions or Control Panels, they do not pose a threat to Classic. (Classic can abort if there are incompatible Extensions or Control Panels.)
One major advantage to OS X and Classic - environment protection. If you set up a non-administrator user and use that id for day-to-day work, you cannot mess up the operating system, file systems or other users.
0
 

Author Comment

by:clareturpin
ID: 12248530
Great! Thanks for all that. I think you just explained why my Mac creashes every time I try to open Classic!

0

Featured Post

Courses: Start Training Online With Pros, Today

Brush up on the basics or master the advanced techniques required to earn essential industry certifications, with Courses. Enroll in a course and start learning today. Training topics range from Android App Dev to the Xen Virtualization Platform.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Software update for MacBook Pro A1278 10 312
Iphone 4S gone suddenly dead 6 66
address book on outlook 2016 mac 7 72
Apple computer tries to connect to WLAN? 2 43
Apple's Mac OS X has become an official member of the malware club. The Flashback Trojan has affected over half million Macs, worldwide. It is behavior that ultimately gets malware onto a person’s computer. Obsolete or out-of-date software helps…
Create a default user profile for Mac OS X 10.7/10.8 Create a user account on OS X that will be a template for every other user of that computer. I usually call it “profile” and make it an administrator account for the time being. 1. Install a…
This video shows how to use Hyena, from SystemTools Software, to bulk import 100 user accounts from an external text file. View in 1080p for best video quality.
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…

776 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question