Mac OS Booting Problem

Mac OS Booting Problem:
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Try the following commands to fix the booting problem in Mac OS X


Command + R       (Recovery Mode)

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Command + Shift + V

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Command + Option + P + R

hey!, try this method then 1.Shut down the computer. 2.Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4. 3.Turn on the computer. 4.Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears. 5.Hold the keys down until the computer restarts and you hear the startup sound for the second time. 6.Release the keys and it should boot:)

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Hey I repair macbook's, i get this problems some times, to fix this you just got to hold command + s then you get a black screen just wait until you see: root.
Then type /sbin/mount -uw /
Then type chmod 775 /
Then type logout and then it will boot after that, shut down your mac and then hold command + v and let it do it's work!

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