This article describes how to create custom XPM background images for the Symantec Drive Encryption BootGuard (preboot) login screens using GIMP.
If using Symantec Drive Encryption in a Symantec Encryption Management Server-managed environment, an administrator can customize the Symantec Drive Encryption BootGuard screen to include additional text or a custom image such as an organization's logo.
Custom background images created for the Symantec Drive Encrypt on screen must meet the following specifications:
- XPM files only.
- Image size of 640 by 480.
- Palette of 15 colors only, including black (one color is reserved for fonts). You do not have to use all 15 colors in the image.
- 8-bit RGB only (cannot be 16-bit RGB). You can verify you are using 8 bit by looking at the XPM header using a text editor: 8-bit values appear as #285A83 (one hex triplet), 16-bit values appear as #28285A5A8383 (two hex triplets).
- UEFI is not being used as the boot mode on the system. Custom XPM images are not currently supported at Preboot using UEFI (TECH214989).
This article provides some general guidelines on how to use GIMP to create a customized BootGuard image. GIMP is a freely distributed image/photo editing software that can be downloaded here.
To create a customized BootGuard image
- Install GIMP on your system.
- Open GIMP.
- Click File>New.
- For the Image Size, select 640x480 from the Template dropdown and click OK.
- Click File>Open As Layers and browse to your image file.
- Select your file and click Open.
- On the menu bar, click Image>Mode>Indexed.
- Change the Maximum number of colors: from 255 to 15.
- Click Convert.
- Click on Image>Mode>RGB
- Click File>Save As, specify a name for your image and save it as a .xpm file.
- Select Merge Visible Layers then click Export.
For environments which have Symatnec Encryption Management Server, this image can be uploaded to individual Consumer Policies. For more information on Consumer Policies in managed environments, please consult the product documentation:
|Note: Graphics applications that support the XPM file format include Graphic Converter on Mac OS X, GIMP on Mac OS X/FreeBSD, and UNIX/Linux, and the Convert command on Linux.|
Note: There are also online services which allow the conversion of image files to XPM format. Although these conversion services are useful, they may not guarantee the sizing and resolution requirements are fulfilled.