Apple Mac OS X Recovery Ideas

Date: October 10th, 2007   No comments

Mac OS X startup key commands:
1. Start up in Open Firmware: Command-Option-O-F
2. Reset parameter RAM: Command-Option-P-R
3. Bypass startup volume: Command-Option-Shift-Delete
4. Open the Startup Manager: Option
5. Force Mac OS X startup: X or Command-X
6. Start up from an optical disc: C
7. Eject optical disc: hold down mouse or trackpad button
8. Start up from a network server: N
9. Reset PowerBook screen: R
10. Start up in Target Disk mode: T
11. Start up in Safe mode: Shift
12. Start up in Verbose mode: Command-V
13. Start up in Single-User mode: Command-S


When in trouble make sure you refer to the source (Apple) before attempting any of these procedures. Disclaimer: Under no circumstances shall i be liable to you for any amount. Use at your own risk.

The next group of recovery ideas are not in a particular order.

  
Repair Permissions with Disk Utility
  
Create a New User (with Admin Privilege), Login as New User and evaluate 
  
Use Target Disk Mode to verify disk with either Disk Utility or Disk Warrior
  
PMU/SMU Reset

    unplug power

    hold computer startup button

    plug in power

  let go of button and turn on computer
  
PRAM Reset

    startup machine holding down the command-option-p-r until you hear two chimes

  
  
NVRAM Reset

    startup machine holding down the command-option-o-f

    at prompt enter: reset-nvram

    at prompt enter: reset-all

    at prompt enter: reboot
  
Startup holding down the Command and S key (Single User Mode)

    at prompt enter: /usr/sbin fsck

    at prompt enter: reboot
  
Delete all cache files

    Boot computer holding down the Shift key (Safe Mode)

    Locate and delete these cache files:

    /System/Library/Cache/com.apple.kernel*

    /System/Library/Extensions.kextcache

    /System/Library/Extensions.mkext

	/Library/Preferences/com.apple.loginwindow.plist

    /Library/Caches/com.apple.LaunchServices