After updating to Lion 10.7.2 System now hangs on boot

For what it's worth my system hung also when it went to restart after installing the 10.7.2 Combo Updater. The computer after restarting would just hang at the white screen after the chimes. I called Apple Care and they told me the usual fix for that problem was to reset the PRAM which I did and it Solved the problem. My machine now boots fine. To reset the PRAM, start your computer from off and immdediately press and hold the Option-Command-P-R keys until the computer Restarts and chimes a second time. Then release the keys. My computer, after initially resetting the PRAM, took about 5 minutes to boot up, which I was told is normal. Now it boots normaly.

Hope this helps 🙂

Reinstalling Lion on top of itself will not harm your data or your applications. It just installs the OS on top of the OS. You should do a backup if you can as a precaution before you reinstall.

I have the same problem. Downloaded and installed Lion 10.7.2 update. The system rebooted but now the only thing i get is the apple logo with the status simbol pinning, but thats it. The only way to acess the mac HD is to boot from an external drive with a Lion bootable partition.

- How can i get my address book files to backup and restore later if needed ?

- How can i get my calendar files to backup and restore later if needed ?

- How can i get my mail folder and smart folders to backup and restore later if needed ?

thank you,

Paulo

Reinstalling Lion on top of itself will not harm your data or your applications. It just installs the OS on top of the OS. You should do a backup if you can as a precaution before you reinstall.

Can yo help me on how to do this reinstallation? I have the installation img on an external hard drive partition.

Thank You,

Paulo Guedes

Unless you have a bootable Mac OS X Lion install DVD or thumb drive, I'm not sure how you would execute the install image you say you have on an external hard drive unless you can boot from it and it was used when creating your installer in place of a DVD or thumb drive.

The only other way would be to boot into the Recovery HD by pressing COMMAND - R when you hear the startup chime; then reinstall from there.

1 - by pressing COMMAND - R when you hear the startup chime does not take any further. The only thing i get is the apple logo with the status simbol pinning.

2 - I have a bootable Mac OS X Lion install external HD partition.

Thank You,

Paulo

Ok, then try booting from the external HD you have and reinstall Lion that way. Press the OPTION key when you hear the startup chime then select your bootable external HD.

By the way Paulo, you really should have started your own discussion thread instead of using this one. 🙂

1 - i did not know about this code of conduct to "started your own discussion thread instead of using this one". Sorry.

2 - The reinstallation will not will not harm my data or applications? Do i need to choose any option during installation?

3 -

- How can i get my address book files to backup and restore later if needed ?

- How can i get my calendar files to backup and restore later if needed ?

- How can i get my mail folder and smart folders to backup and restore later if needed ?

Thank You,

Paulo

I had a similar problem, I solved mine, by booting from an external drive and installing 10.7.2 combo update on internal drive. Since applying combo update, my system boots and operates fine.

Can you help me on how to "... installing 10.7.2 combo update on internal drive..."

Thank You,

Paulo

Had similar problems, it appeared in verbose mode, that there were still some remainders of PGP WDE used during boottime. After removing them using commandline (in recovery mode), the system booted correctly.

My source was: https://discussions.apple.com/thread/3374161?answerId=16338722022#16338722022&tstart=0#16338722?tstart=0

Sure, Here is a more detailed list of steps that I performed.

1) Prior to issue, I had a bootable external drive with MacOS 10.7 on it. It was not connected during upgrade.

2) After apply 10.7.2 upgrade on my internal drive, unable to boot post upgrade

3) Plugged external drive into Mac, rebooted Mac, holding down Option key for list of boot drives, selected external drive

4) From OS running on external drive, launched safari, went to apple support, downloads, macos, and downloaded 10.7.2 combo updater.

5) After download completed, mounted Combo Update disk image, double click update installer

6) Agree to license, selected internal drive as target for installation

7) After combo upgrade install finished, started control panel, selected startup disk, selected internal drive and clicked reboot.

8) System boot fine from internal drive.

After successful update, starting my Mac Pro gives me a blank grey screen.Turn off the computer,restart holding down option key and selecting Macintosh HD starts up fine.

Didn't have this problem prior to the update, any clues? Verified start up disk, used Onyx and DiskWarrior off an external drive, but the problem still persists. It is a 10.7.2 introduced problem.

Let's hope Apple moves quickly to set things right.

I've a wireless keyboard and seems that it doesn't work do you suggest any other way for?

Ciao

Renato

Had the exact same issue with my White 2006 MB. Had to reboot into Lion Recovery Mode and load a Time Machine backup to get the Mac up and running again, on 10.7.1. Tried to update twice with similar results.

Any luck getting around this issue anyone?