Mike Bombish m'a envoyé cette til d'apple :
http://docs.info.apple.com/article.html?artnum=106639
Pour moi j'ai essayé cela ne change rien toujours le même message d'erreur....
Symptom
An alert box with one of the following messages appears, and Classic does not start up:
"To start Classic, you need Mac OS 9.1 or later installed. See your documentation for instructions on installing this software."
"You are running Classic without superuser (root privileges). Ensure that TruBluEnvironment is setuid and owned by root, or reinstall your Mac OS X System Software."
Note: This document applies to Mac OS X 10.1. If you see the second message when using Mac OS X 10.0, see technical document 106278: 'Mac OS X 10.0: You are running Classic without superuser (root) Privileges' Message"
Products affected
* Mac OS X 10.1
Solution
1. Open System Preferences.
2. Click Startup Disk.
3. Select your Mac OS 9 System Folder in the Startup Disk pane.
4. Choose Show All from the View menu.
5. Click Classic.
6. Select your Classic startup volume (the one that contains your Mac OS 9 System Folder).
7. Click Start. Classic should now start up as expected.
8. Choose Show All from the View menu.
9. Click Startup Disk.
10. Select your Mac OS X System Folder in the Startup Disk window.
11. Close the System Preferences window.
If the issue persists, start up from Mac OS 9, then restart from Mac OS X 10.1 using the Startup Disk control panel included with Mac OS 9.
For best results, do not install multiple versions of Mac OS 9 on your Classic startup volume.
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