How to reset the admin password for Mac OSX 10.5.8

I have a 2008 Macbook Leopard version of the Mac OSX 10.5.8. My DVD optical drive does not open, and I need to reset the admin password because we have forgotten what it is. Wondering if it is possible doing it at home some step by step process I am fine with deleting all the contents saved on the macbook as well.

Not without the optical drive. You would need to insert the install disc to reset the admin password.
But you may be able to do this in single user mode > 10.5: Reset a user's password in single user mode - Mac OS X Hints

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OS X 10.7 Lion, 10.8 MountainLion & 10.9 Mavericks
Reset Password starting from Recovery HD
Start the computer,then press and hold down command and R keys to start into recovery partition.
When you see the Apple logo, release the keys.
Wait until OS X Utilities window shows up.
Move the mouse to the menubar at the top and click "Utilities", then select "Terminal"
from the drop down.
Terminal window will appear.
Type in resetpassword and press enter on the keyboard.
Leave the Terminal window open.
Reset Password Utility window will open with Macintosh HD selected.
Select the user account from the popup menu box.
Enter a new password.
Reenter the new password for the user.
Enter a hint.
Click the "Save" button.
Click  in the menubar and select Restart.
Log in.
If Keychain dialog box appears, select “Create New Keychain”.

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The following link contains directions for resetting your password.
http://support.apple.com/kb/HT1274?viewlocale=en_US

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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.

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and when i logged into the support communities , i've found some codes to write ; like
typing /sbin/fsck -fy
/sbin/mount -uw /
rm /var/db/ .applesetupdone
and that were written to be entered after loging in with the single user mode ( as described ) by pressing the "command" key with the "s" key
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im now writting by using the "command" "r" and selecting safari help
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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.

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OS X 10.7 Lion /10.8 Mountain Lion
Follow the instructions in the first and third boxes.
http://pondini.org/OSX/Password.html

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commit;
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http://support.apple.com/kb/HT5404?viewlocale=en_US&locale=en_US

My Macbook is running on OS 10.5.8. However, I forgot my admin password. I would like to find out if I can use OS 10.6 CD to reset the admin password while upgrading OS? Also, will all my files be still present after upgrade??

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1. Should be possible to do that; go to the Utilities menu and select 'reset password' before starting the installer. (while booted from the DVD of course)
2. Standard installation of SL only replaces system components; applications, user data and preference settings should not be affected.
3. But you do have a backup just in case, don't you?

I just installed the new firefox for Mac OSX 10.6.8 and when I select an image on a site (right click and copy) and paste in Photoshop 5.5, the image lightens. It does not do this in Safari.

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I just installed the new firefox for Mac OSX 10.6.8 and when I select an image on a site (right click and copy) and paste in Photoshop 5.5, the image lightens. It does not do this in Safari.

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Hi,
I'm new to this. The admin userid/password that was successfully used in the past in not being recognized now.
I was trying to log in to Adobe LiveCycle ES ver 8.2 from http://localhost:8080/adminui/login.faces and receive the message "Username and password do not match".
Is there a way for me to reset the userid/password ? I cannot reset a user's password before accessing thie admin account first.
Any help is appreciated.
Thank You.
Yajiv

Some people have had success in LC ES 8.2 with running the following SQL statement on the LiveCycle backend database. It re-sets the password of the 'Super Administrator' user to 'password':
UPDATE adobe.edcprincipallocalaccountentity, adobe.edcprincipaluserentity
SET password = 'TXScDjEEQCzWccUMUdf8wijx/hE=', salt = 'JNIBnmos3d0WE9W8oquFIQ=='
WHERE adobe.edcprincipallocalaccountentity.refuserprincipalid = adobe.edcprincipaluserentity.id and adobe.edcprincipaluserentity.uidstring = 'administrator';
adobe = the schema name
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Hi,
I bought a new Macbook Pro laptop yesterday running OS X Mavericks 10.9.1 and had it been set up in store so when I got home it was ready to use. Did not have to set up anything!
Today I was trying to search for some videos on youtube and apparently i need the latest adobe flash player to play videos, which I have downloaded already but it asks for the admin password? Which i have no idea what it is? I think it has been set up in store and i wasn't told about it? I was told I can change it anytime but is it possible to change it without knowing the original password? And if so how can i do it?
Thanks a lot! x

Welcome to Apple Support Communities
You should have been able to choose your password at the Apple Store. If not, you need to change your password.
You can change your password without knowing the old one. If your Apple ID was set on your Mac, you can try resetting your password with your Apple ID > http://support.apple.com/kb/HT1274
If it does not work, reset your password in OS X Recovery > http://discussions.apple.com/docs/DOC-4101

How to reset the admin password for Mac OSX 10.5.8

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