السلام عليكم ورحمة الله وبركاته ... سأحاول معك خطوات متعددة لحل مشكلتك ... وإن شاء الله تحل .. ولكن ملاحظة : لست خبيرا في الماك ولكن أحب التعلم والبحث عن حلول للمشاكل ( يعني فضولي ) ..
بحثت في إحدي الكتب فوجدت التالي :
Troubleshooting the Startup Sequence
:Start Up Computer in Safe Mode - 1:
Hold down Shift at startup - a special way to start Mac OS X when troubleshooting. Starting up into Safe Mode simplifes the startup and operation of your computer in the following ways: 1- It forces a directory check of the startup volume. 2- It loads only required kernel extensions. 3- It runs only startup items in /System/Library/StarupItems.
Starting up in Safe Mode is useful when you are trying to isolate the cause of a problem.
Remove Corrupted Preferences in Single-User Mode - 2:
Corrupted system, loginwindow, or directory services preferences can cause long delays and possibly stop the machine from completely starting up.
1- Reboot the machine, and after the startup chime, press Cmd-S start in single-user mode.
2- Run a disk check by typing:
fsck -y -f
3- Mount the files system as read/write by typing:
mount -um / make sure you type it right
4- Navigate to the login window and directory Services preferences by typing:
cd/Library/Preferences
5- Move the com.apple.loginwindow.plist to a backup file by typing:
mv com.apple.loginwindow.plist com.apple.loginwindow.plist.backup
6- Move the DirectoryService directory to a backup derectory by typing :
mv DirectoryService DirectoryService.backup
7- Navigate to the SystemConfiguration preferences folder by typing:
cd SystemConfiguration
8- Move the preferences.plist file to a backup file by typing:
mv preferences.plist preferences.plist.backup
9- Restart the machine by typing:
reboot
10- Log in as Apple Admin
11- Navigate to /Library/Preferences in the Finder.
12- Verify that the com.apple.loginwindow.plist file and the DirectoryService directory were re-created.
13- Navigate to /Library/Preferences/SystemConfiguration. Notice that preferences.plist has not been re-created. It will be re-created as prefernces are set in System Preferences.
14- Open System Preferences.
15- Click Sharing. Notice that Computer Name is blank.
16- In the Computer Name field, enter your name.
17- In the Finder, close and re-open the /Library/Preferences/SystemConfiguration folder.
The preferences.plist file ahs been re-created.
At this point, your computer is functional, and you could reconfigure all of the preferences back to their settings before what we did. However, since you made a backup of the preferences.plist file, you can use that file to restore the preferences setting.
1- Reboot the machine, and after the startup chime, press the Cmd-S to start in single-user mode
2- Run a disk check by typing:
fsck -y -f
3- Mount the file system as read/write by typing:
mount -um / make sure you type it right again
4- Navigate to the SystemConfiguration preferences folder by typing:
cd/Library/Preferences/SystemConfiguration
5- Restore the preferences.plist file from the backup file by typing:
mv preferences.plist.backup preferences.plist
6- Restart the machine by typing
reboot
وبالتوفيق ......
|