How can I reset the open firmware password?

I wanted to installed Mac OS X Lion from scratch on my newly purchased MBP 15,4"
I put the installESD.dmg on a USB pendrive, then I boot on it. I used Disk utility to erase en encrypte my drive, and at the same time I set the Open firmware password.
I launched the installation process, after a while the computer reboot but I got an error:
there was a problem installing mac os x try reinstalling
I google this error and found many people who solved this issue by erasing the PRAM using the shortcut: cmd + opt + P + R. I'm asked to enter the password which I did but it's still keeping asking for the password so I guess its wrong which is weird cause I typed it in few minutes ago, so I might have done twice a typing error or I don't know.
So my question is how can I reset this password to be able to install my OS? (I cannot access to any OS cause the installation process failed).
Thnak you for your help

Yes I did use the disk utility to restore the dmg on my USB drive. The USB drive is perfectly fine, I can boot on it without any problem, well before setting this open firmware password I could do it.
Now the situation is:
No system installed,
Lock with a password
I have the disk to install SL but I cannot boot on the DVD because it is asking me for this password.

Similar Messages

Any one know how to reset the open firmware password?

iBook G4. 1.33ghz. 1GB RAM.30 or 40GB HDD. Running 10.5.8
I got this from a friend, who got it from a friend. And its acting funny. It works. But a lot of options are missing from the System Preferences pane. And another friend said to reset the NVRAM and all the setting in the open firmware. Only no one seems to know the open firmware password. And I can't seem to find how you'd reset all the setting in the open firmware. I'm working on locating the installation disks for this iBook. But will that even help me with this resetting open firmware business?

I did a google search and here is one link that might have some helpful information -
http://www.macforensicslab.com/ProductsAndServices/index.php?mainpage=document_general_info&productsid=69&zenid=74f4076fb96074db45dc274f7de86bc6

HT4314 How can I reset the gem center password without the birthday

Does anyone know how to reset game center password without knowing the birthday. My son setup his own game center account and to logge out and know can't reset the password.

Boot from your recovery partition by holding down the key combination command-R at startup. Release the keys when you see a gray screen with a spinning dial.
When the recovery desktop appears, select Utilities ▹ Terminal from the menu bar.
In the Terminal window, enter “resetpassword” and press return. A Reset Password window opens.
Select your boot volume if not already selected.
Select your username from the menu labeled Select the user account if not already selected.
Follow the prompts to reset the password.
Select  ▹ Restart from the menu bar.
You should now be able to log in with the new password, but you won't be able to unlock the Keychain. If you've forgotten the Keychain password (which is ordinarily the same as your login password), there's no way to recover it. You’ll need to reset your keychain in the preferences of the Keychain Access application.

How can I reset the "open with" dialog?

When I select a file and choose "open with," certain applications are tripled, such as TextEdit, Preview, Quicktime Player, and Safari, while others are doubled, such as ColorSync Utility and others. Some are only listed once. I'm wondering if there is a way to reset this menu so that each applicable application is only listed once.
Thank you,
Henry
Also - I am running OS X 10.4.11, in case that is relevant.

Hello,
Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions...
Reset Launch Services...
http://www.thexlab.com/faqs/resetlaunchservices.html#Anchor-Reset-47857
Reboot.
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.

TA24770 How can I reset the "Open With" menu?

Any help?

Hello,
Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions...
Reset Launch Services...
http://www.thexlab.com/faqs/resetlaunchservices.html#Anchor-Reset-47857
Reboot.
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.

I am having a Startup problem. Someone comes on the screen with Open Firmware to Startup. How can I reset the PRAM myself to solve this problem?

I am having a Startup problem. Someone comes on the screen with Open Firmware to Startup. How can I reset the PRAM myself to solve this problem?

Read these.
http://support.apple.com/kb/HT1431
http://reviews.cnet.com/8301-13727_7-10330118-263.html

HT204085 What is "local items"keychain and its password, how can i reset the password if i forgot the password

What is "local items"keychain and its pasword. how can i reset the password if i forget the password?

I just fixed the same problem. Here's what to do.
Click on the finder, then scroll across to the GO on the top menu bar, but also hold down the option or alt key while you do this.
scroll down the go menu to library and highlight library.
the library folder will open
go to the keychains folder and open it
in the keychains folder, then click and drag the blue folder that has all the letters and numbers for a title like "A2CEEE274-....."
drag this folder to the desktop
now restart your machine
when the machine restarts, you should see the keychains folder still open with a new folder in it that looks just like the one you dragged out onto the desktop
throw the one on the desktop out in the trash
You just reset the keychain folder so the new mavericks update could recognize it correctly, by the way apple customer support mentioned the reason this was happening was due to the update, and this is the standard fix. The apple keychain access pw should be your apple id or logon password.
Good luck!!!
STEVE FARRELL

I have 2 ipod touches. I backed up the new one with old's info. The old one will not unlock with the password I had wrote down and I tried my new ones password. How can I reset the old ipod without affecting the new one and how can I unlock the old one?

I have 2 ipod touches. I backed up the new one with old's info. The old one will not unlock with the password I had wrote down and I tried my new ones password. How can I reset the old ipod without affecting the new one and how can I unlock the old one?

Place the iOS device in Recovery Mode and then connect to your computer and restore via iTunes. The iPod will be erased.
iOS: Wrong passcode results in red disabled screen
If recovery mode does not work try DFU mode.
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
For how to restore:
iTunes: Restoring iOS software

I'm using Premiere Elements 11, which automatically opens in a project window for HD. I want to reset the default for SD. How can I reset the defaul for opening a project?

I'm using Premiere Elements 11, which automatically opens in a project window for HD. I want to reset the default for SD. How can I reset the default for opening a project?

scottypet
For Premiere Elements 11 and 12, you cannot change its default project preset from NTSC AVCHD Full HD1080i30 or its PAL counterpart PAL AVCHD Full HD1080i25 to something else.
For each project, you can set the project preset manually if you do not want the program to take over setting the project preset based
on the properties of the first drag to the Timeline.
To set the project preset manually, open the project to the Expert workspace, go to File Menu/New/Project and Change Settings.
In the Change Settings area, change the project preset. Before you exit that area, be sure to have a check mark next to "Force Selected Project Setting on This Project" in the new project dialog.
Then you import your source media, using the appropriate Add Media choice.
ATR Premiere Elements Troubleshooting: PE11: Accuracy of Automatic Project Preset (New Project Dialog) Setting
If you want a version of Premiere Elements that uses the default project preset of NTSC DV Standard or its PAL counterpart PAL DV Standard, then you need to look to a version of Premiere Elements earlier than 11.
Please let me know if you have any further questions on this or need clarification.
Thank you.
ATR

I have a situation where the administrator password is rejected when attempting a software update. I think this happened because of syncing a iPad to the iMac. How can I reset the Software Update back to the administrator password?

I have a situation where the administrator password is rejected when attempting a software update. I think this happened because of syncing an iPad to the iMac. How can I reset the Software Update back to the administrator password?

You can reset the password with the install disk.

I bought a used Macbook that came with the OS 10.7 upgrade, How can I reset the admin password?

How can I reset the admin password I don't have the old password. I bought it used and the disk's it came with are OS 10.5 how can i get this password reset without losing any of the upgrades or files?

Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
When the menubar appears select Terminal from the Utilities menu. Enter resetpassword at the prompt and press RETURN. Follow instructions in the dialog window that will appear.
Or see Reset a Mac OS X 10.7 Lion Password and OS X Lion- Apple ID can be used to reset your user account password.

How can I reset the apple Id security passwords?

How can I reset the apple Id security passwords?

The Three Best Alternatives for Security Questions and Rescue Mail
    1. Use Apple's Express Lane.
          Go to https://expresslane.apple.com ; click 'See all products and services' at the
          bottom of the page. In the next page click 'More Products and Services, then
          'Apple ID'. In the next page select 'Other Apple ID Topics' then 'Forgotten Apple
          ID security questions' and click 'Continue'.
     2. Call Apple Support in your country: Customer Service: Contact Apple support.
     3. Rescue email address and how to reset Apple ID security questions.
A substitute for using the security questions is to use 2-step verification:
Two-step verification FAQ Get answers to frequently asked questions about two-step verification for Apple ID.

HT201363 Hi dear sir/Madam i have my apple id & its password but i forgot the answers of the security questions and i have no rescue email pls help me how can i reset the security questions?

Hi dear sir/Madam i have my apple id & its password but i forgot the answers of the security questions and i have no rescue email pls help me how can i reset the security questions? as i have some credit in my account i can not creat a new apple id.

You need to ask Apple to reset your security questions; ways of contacting them include phoning AppleCare and asking for the Account Security team, clicking here and picking a method for your country, and filling out and submitting this form.
They wouldn't be security questions if they could be bypassed without Apple verifying your identity.
(105243)

How can i reset my Apple ID password if i forgot the answers to my security questions and my rescue email no longer exists?

how can i reset my Apple ID password if i forgot the answers to my security questions adn my rescue email no longer exists?

You will need to contact Support in your country to get the password and security questions reset : http://support.apple.com/kb/HT5699
When it's been reset you can then use the steps on this page to update your rescue email address for potential future use : http://support.apple.com/kb/HT5620

Cant remember my password for my mac air.. how can i reset the password?

cant remember my password for my mac air.. how can i reset the password?

Start it up from the software reinstall drive or Mac OS X DVD and use the reset password function. If needed, restart with the Option key held down.
(59271)

How can I reset the open firmware password?

Similar Messages

Maybe you are looking for