FRED JOHNSON Posted March 3, 2009 Share Posted March 3, 2009 I have an old macbook which was upgraded to OS 10 +, now I wish to "downgrade" it back to OS 9 (which was what it came with) to use some older software. I have the original restore CD but I don't know exactly how to do the downgrade. Any help would be appreciated. Quote Link to comment
islandmon Posted March 3, 2009 Share Posted March 3, 2009 Did you know that you may be able to run Classic along with your current version of OSX. Which version is installed ? Quote Link to comment
FRED JOHNSON Posted March 3, 2009 Author Share Posted March 3, 2009 No need to run anything OSX on this computer. Just 1 or 2 OS9 compatible programs only. Quote Link to comment
D Wood Posted March 3, 2009 Share Posted March 3, 2009 Fred You should really go to the Mac forums, but OS9 (Classic) should be on the second of the Macbook original installation disks - you just insert the disk and install it, and it should run alongside whatever OS is also on there. Further to Islandmon's post though, OS 9 will not run on Intel Macs running 10.5. I have an iBook with OS 10.4 & OS 9 installed so I can still access ClarisCAD files for that very reason. A signature with your system specs would be helpful. Quote Link to comment
FRED JOHNSON Posted March 4, 2009 Author Share Posted March 4, 2009 I used the OS9 install disc to boot the mac at startup with the "c" key depressed, then did a clean install of OS 9.2. After a restart I used the OSX system preferences to have the mac start up with OS9. Everything seems fine, so far and I loaded one OS9 program just to check. System profiler shows that OSX is still there although I don't know how to activate it if I wanted to. This excercise was to allow me to use my older and highly customized version of VW Architect 1 at remote locations, such as a client's house and to continue to use my specification writing software, also highly customized, running an older, and better version (IMHO)of MS Word. Thanks Islandman & David for your help. Fred Quote Link to comment
islandmon Posted March 5, 2009 Share Posted March 5, 2009 OSX=Preferences ( OS9=Control Panel ) >Startup Disk Selects the Boot partition. Then restart. OSX will run Classic OS9.2 as an application so you can have both going at the same time. Quote Link to comment
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