mirror of
https://github.com/mbirth/wiki.git
synced 2024-11-14 14:06:46 +00:00
51 lines
2.1 KiB
Markdown
51 lines
2.1 KiB
Markdown
---
|
|
title: DELL Latitude series
|
|
layout: default
|
|
created: 2008-07-20 22:26:53 +0200
|
|
updated: 2008-07-20 22:25:53 +0200
|
|
toc: false
|
|
tags:
|
|
- know-how
|
|
- hacking
|
|
- hardware
|
|
- bios
|
|
- passwords
|
|
- dell
|
|
- latitude
|
|
---
|
|
These ones are something different. DELL notebooks save their BIOS password in an EEPROM-chip so it isn't deleted when
|
|
you short-circuit the BIOS battery or something like that.
|
|
|
|
Also there's no jumper/DIP-switch which disables the password. Nevertheless, there are three different ways to get such
|
|
things fixed:
|
|
|
|
1. Solder out the EEPROM and replace it with an empty one (this will result in service tag loss), or
|
|
1. Generate an universal password for this device (only works for tags ending with `-D35B` for now), or
|
|
1. Short pin 6 or 7 of the EEPROM to ground. See [General strategy]({% post_url 2009-10-30-bios-passwords %}#dell_notebooks) for more info.
|
|
|
|
I will describe the second one here.
|
|
|
|
|
|
Service tags ending with -D35B
|
|
==============================
|
|
|
|
Switch on the notebook until you get the password-entry screen, which should look like this one:
|
|
|
|
|
|
Notice the service tag number **8WG030J-D35B** which is the key to the password. Now hack this number into the nice tool ([Latitude_MasterPW.exe]({{ site.url }}/assets/latitude.zip),
|
|
there is another tool included for Latitude XPi) and generate your master password.
|
|
|
|
Enter the service tag **EXACTLY** as it appears in the BIOS (all upper case letters) and get your master password
|
|
("jgnijfyj" in this case).
|
|
|
|
Now enter this master password on the password prompt (Remember that on German keyboards, z ⇔ y!), **hold down the
|
|
<kbd>Ctrl</kbd>-key and press <kbd>Enter</kbd> twice**. Et voilà!
|
|
|
|
I don't know why, but somehow, my service tag changed to **8WG030J-595B** (either it was because of this password
|
|
breach or because of a BIOS upgrade). The generated universal password doesn't work with this new service tag.
|
|
|
|
Also read the DELL-section under [General strategies]({% post_url 2009-10-30-bios-passwords %}#dell_notebooks).
|
|
|
|
|
|
[Back to overview.]({% post_url 2009-10-30-bios-passwords %})
|