After installing Sophos SafeGuard Disk Encryption, the sound card no longer functions.

  • Article ID: 109106
  • Updated: 30 Sep 2010

Sophos SafeGuard Disk Encryption 4.60

Client OS

Windows 2000 Professional SP4, Windows XP SP3

Server OS



What can be done to make the sound card working again?


As of Sophos SafeGuard Disk Encryption 4.60.0, you may apply the following setting during installation or update.

In order to address the sound card problem, a property variable called EMEM='offset' needs to be included in the setup routine.

Setup EMEM=1024 advises the Pre-Boot code to pass its parameter block 1024 bytes below the boundary that is indicated in the BIOS.


msiexec /i c:\Install\sde.msi /qn /L*vx C:\Install\SDE_INST.log CFGFILE=C:\Install\Install.cfg ADDLOCAL=SDE,Encryption,SGSAL EMEM=1024

EMEM has a valid range from 1 to 16383 bytes.

* * Please note that you may configure this offset only during installation or update. * *
The value can be found in the registry under the same value name. It serves for information purposes only. Subsequent changes of this value have no effect!

For more information about installing Sophos SafeGuard Disk Encryption using the command line, please refer to the user manual under the chapter titled "Central Installation". The migration process is described in chapter five "update".

Please note that a configuration file (respectively migration file) is necessary to install (respectively update) Sophos SafeGuard Disk Encryption unattended.

If you do not want to install Sophos SafeGuard Disk Encryption unattended, you can use the following process:

Open a CMD windows.
Go to the path where the Sophos SafeGuard Disk Encryption install files are stored.
Type setup.exe EMEM=1024

The Sophos SafeGuard Disk Encryption will go through the normal installation process.

keywords: DELL D830 soundcard SigmaTel mute sde audio msi emen msi installer msiexec /L*VX

If you need more information or guidance, then please contact technical support.

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