ok, so i have a macbook air.

and the situation was (unbelievable) happening like this:

my girl wants to connect the mighty mouse through bluetooth

she "just" open bluetooth file exchange instead of leaving the bluetooth discoverable something do it as in her macbook (she has a white macbook)

the MBA freezes. Press and hold the power to shut it down and then reboot

Admin Username and password couldn't go thru


I know it sounds really ridiculous but that's how it is and I'm hopeless searching around for a clue.

I "think" that during the keychain pairing the password just got broken or something right? I can't understand why this could happen.

anyone knows a way or backdoor to get back admin privilege? I've deleted the spare User account last night, disable Guest account as well. If not, anyone knows whether macbook air can boot from a 3rd party USB DVD Drive? I ordered a USB cable for 2.5/3.5/sata + IDE and hope to use any DVD+-RW out in the market a while ago and still waiting for it to arrived but now this happens so I think I have to be prepared/.

Looking forward to hearing from you

Thanks all!!!!
Best regards,
Hieu

ok guys

after a while of searching and trying, I've done the recovery successfully without losing data or freshly install Leopard

here is what i found: from http://forums.macrumors.com/showthread.php?t=375901

Step 1: Boot in single user mode (Single user mode bypasses the GUI, which is all the visual stuff, and gives you something called "root access") by pressing Command + S (Apple+S) when the first shade of blue appears on the screen, and holding it down until the screen turns black with white text.

Step 2: Wait for all the code stuff to load. Now, the first thing we need to do in single user mode is mount the hard drive so we can edit it. You enter this command in :



/sbin/mount -uw /



It should say something about removing orphaned unlinked files.

Step 3: We are going to delete a little file that tells your computer every time you start up that you've completed the setup by entering this commmand:



rm /var/db/.applesetupdone



It should just bump down, waiting fotr the next command if it worked.

Step 4: Now type,


reboot



Step 5: It should shut down and reboot. Than, a setup window will appear, asking you what language you want your computer to be in, just like you see when you setup a newly purchased Mac.

WARNING: A welcome video will play after you select the language. It has some pretty cool music, but if your in a room with other people, I'd mute it right after the video starts.

Step 6: Setup the computer. Select "DO NOT TRANSFER MY DATA". Don't worry, all your old stuff will still be there. Choose your internet connection and network, here is where you need your WEP or security password if you have one.

Step 7: Create a new local account to administer that computer. You usually want to enter the name of the computer as the longname, and the shortname what you'll log in as. Say your computer's old name was "Frank's Computer", than just put Frank as the longname, because it will automatically as "'s Computer" at the end. MAKE SURE THAT BOTH USERNAMES ARE DIFFERENT FROM THE EXSISTING ONES, OTHERWISE IT WILL OVERWRITE.

Step 8: Finish the setup, and you should automatically be logged into your new administrator account.

After logging into your admin account, go to system preferences and open the accounts pane. Select your old account and enable it as an admin account. Logout of the one you have just made and re- login using your original account. You now should be an administrator again. You can go back to system preferences and delete the account you made in the exercise.


ps - in step 7 it is really important about the account names. I used BillyGates as mine.
aussie_geek


so, it's done. Mod can remove this or just leave this post here so that someone can run into this and don't have to ask...

peace!!!

Just one trick:

Boot in single user mode;

type:

Code:

/sbin/mount -uw /

passwd your_user

(type new password 2 times)

exit (or reboot)

Cheerz,