- #Bios master password generator dell how to#
- #Bios master password generator dell full#
It can also be run in the full Windows OS or in WinPE. The script can be run as a standalone script in Windows, or as a part of a Configuration Manager task sequence. Note that the log file path will always be set to _SMSTSLogPath when run during a task sequence. The log file name and path can be changed using the LogFile parameter. Otherwise, the log file will be located in ProgramData\ConfigJonScripts\Dell. If the script is being run during a task sequence, the log file will be located in the _SMSTSLogPath. By default, this log file will be named Manage-DellBiosPasswords-WMI.Log. When the script runs, it will write to a log file.
ContinueOnError – Ignore any errors caused by changing or clearing passwords. NoUserPrompt – Suppress all user prompts. However, if you want the script to be completely silent, there are a few parameters that can be set. This can be useful in a task sequence scenario where you may not want a system to continue with the task sequence if the BIOS password is not set correctly. Multiple old passwords can be specified (separated by a comma).īy default, if the script fails to perform any of these actions, it will display a message box on the screen and exit with an error code. OldSystemPassword – The old system password(s) to be changed. SystemPassword – The current system password or password to be set. Multiple old passwords can be specified (separated by a comma). OldAdminPassword – The old admin password(s) to be changed. AdminPassword – The current admin password or password to be set. 
There are also parameters that are used to specify the new and old BIOS passwords.
SystemClear – Clear an existing system password. SystemSet – Set a new system password or change an existing system password. AdminClear – Clear an existing admin password. AdminSet – Set a new admin password or change an existing admin password. The script accepts parameters that tell it which actions to perform. This script takes the basic commands we just looked at and adds logic to allow for a more automated password management process. Status Codesįor reference, when calling the SetNewPassword method, the possible status codes are:įor more detailed information on the Dell WMI interface, refer to the official documentation. The type of text is 1 (plain text), the length of the byte array is set to $Bytes.Length, and the byte array is $Bytes. When a password is set, these arguments are set to 1,$Bytes.Length,$Bytes. The type of text is 0 (None), the length of the byte array is 0, and the byte array itself is 0. When no password is set, these arguments are set to 0,0,0. The byte array containing the encoded password. $Encoder = New-Object 8EncodingĮach of the methods used to modify BIOS settings starts with 3 arguments. This class is used to return the current BIOS password status. It is located in the root\dcim\sysman\wmisecurity namespace. This script uses 2 of the Dell provided WMI classes. This means that we can use PowerShell to directly view and edit BIOS settings without the need for a vendor specific program. The script can be downloaded from my GitHub: Dell, WMI, and PowerShellĭell provides a WMI interface that can be used for querying and modifying BIOS settings on their hardware models (only applies to models released after calendar year 2018). Because of this, older Dell hardware will still require the use of the DellBIOSProvider PowerShell module. One caveat for this new method is the WMI classes are only supported on Dell hardware released to market after calendar year 2018. This allowed me to create a new version of the Dell BIOS Settings Management script that does not require any additional content to function. Thankfully, Dell recently released a technical whitepaper documenting WMI classes that can be used to directly modify BIOS settings without needing an outside program or PowerShell module. This method works, but I was not completely satisfied with it, as the PowerShell module needs to be downloaded and installed on every system the script runs on. The method described in that post uses the DellBIOSProvider PowerShell module. #Bios master password generator dell how to#
Earlier this year, I wrote about how to manage Dell BIOS password s using PowerShell.
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