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6. Mac OS 9 Programs—and Windows Programs > Classic: Mac OS 9 on Mac OS X

Classic: Mac OS 9 on Mac OS X

If you still harbor the notion, propagated by certain old Mac books, that it’s bad form to have two System folders on the same hard drive, welcome to the 21st century. When you use Mac OS X, it’s not only a good idea to have two System folders, it’s almost a requirement. You should have one copy of Mac OS X, and at least one copy of Mac OS 9. (Appendix A describes various ways to set all this up.)

It’s easy to spot the Mac OS 9 System Folder on your drive, as shown in Figure 6-1.

When you’re running Mac OS X, the System Folder that contains Mac OS 9 is clearly marked by the golden 9. Only one System Folder per disk may bear this logo, which indicates that it’s the only one officially recognized by the Mac. (As the programmers say, it’s the “blessed” System Folder.)

Figure 6-1. When you’re running Mac OS X, the System Folder that contains Mac OS 9 is clearly marked by the golden 9. Only one System Folder per disk may bear this logo, which indicates that it’s the only one officially recognized by the Mac. (As the programmers say, it’s the “blessed” System Folder.)


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