Dell D28M, Service Manual

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About this task
NOTE: If BitLocker is enabled, it must be suspended prior to updating the system BIOS, and then re-enabled after the
BIOS update is completed.
Steps
1. Restart the computer.
2. Go to
Dell.com/support .
• Enter the Service Tag or Express Service Code and click Submit .
• Click Detect Product and follow the instructions on screen.
3. If you are unable to detect or find the Service Tag, click Choose from all products .
4. Choose the Products category from the list.
NOTE: Choose the appropriate category to reach the product page
5. Select your computer model and the Product Support page of your computer appears.
6. Click Get drivers and click Drivers and Downloads .
The Drivers and Downloads section opens.
7. Click Find it myself .
8. Click BIOS to view the BIOS versions.
9. Identify the latest BIOS file and click Download .
10. Select your preferred download method in the Please select your download method below window, click Download File .
The File Download window appears.
11. Click Save to save the file on your computer.
12. Click Run to install the updated BIOS settings on your computer.
Follow the instructions on the screen.
Updating BIOS on systems with BitLocker enabled
CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the system it will not
recognize the BitLocker key. You will then be prompted to enter the recovery key to progress and the system will ask for
this on each reboot. If the recovery key is not known this can result in data loss or an unnecessary operating system
reinstall. For more information about this subject, see Knowledge Article:
https://www.dell.com/support/article/
sln153694
Updating your system BIOS using a USB flash drive
About this task
If the system cannot load into Windows but there is still a need to update the BIOS, download the BIOS file using another system and save
it to a bootable USB Flash Drive.
NOTE: You will need to use a bootable USB Flash drive. Please refer to the following article for further details: https://
www.dell.com/support/article/sln143196/
Steps
1. Download the BIOS update .EXE file to another system.
2. Copy the file e.g. O9010A12.EXE onto the bootable USB Flash drive.
3. Insert the USB Flash drive into the system that requires the BIOS update.
4. Restart the system and press F12 when the Dell Splash logo appears to display the One Time Boot Menu.
5. Using arrow keys, select
USB Storage Device and click Return.
6. The system will boot to a Diag C:\> prompt.
7. Run the file by typing the full filename e.g. O9010A12.exe and press Return.
8. The BIOS Update Utility will load, follow the instructions on screen.
System setup 79