Displaying a custom logo during bootup of HP commercial notebook systems - Technical white paper

Image requirements

The image must meet the following requirements:

• .bmp file format for systems using BIOS 08

• .jpg file format for systems using BIOS 09 or BIOS 2011

• Resolution range between 424 x 320 pixels and 1024 x 768 pixels

• File size maximum of 32 kilobytes

• Maximum of 16 million colors

Command-line switches

The EREPLOGO.EXE utility accepts multiple input parameters, identified by a command line switch. It uses the following

syntax: EREPLOGO.EXE [/<Option><parameter>] as shown in Table 2.

Table 2: Command-line syntax for the EREPLOGO.EXE utility

Command

option

Valid values Description

/e None Erases current logo in Flash ROM

/fFilename ASCII Text Command to specify the .bmp or .jpg image file

used as the logo displayed during POST.

If you enter no parameters or enter invalid parameters, the utility displays a usage statement similar to the following:

HPQ EFI BIOS Logo Replace - Version 1.00

Usage: EREPLOGO [/e] /fFilename

/e: Erase the current logo in the EFI BIOS

/fFilename: Bitmap or JPEG file created to be used as the logo

Command-line examples

The following examples were run on an HP Elitebook 2730p notebook with an HP logo.

Using the “/f” option to replace the existing logo

This example replaces the existing logo in the Flash ROM device with a new logo file.

C:\> EREPLOGO /fHPLOGO.JPG

HPQ EFI BIOS Logo Replace - Version 1.01

Logo File Size: 21878 bytes

Flash Logo Programming Successful

Done.

Using the “/e” option to erase the logo in the Flash ROM

The following example shows how to use the erase /e option to erase an existing logo and return the display to the

default HP logo.