No /boot/loader error on Lattitude E5550 SGN 7.00.2.23

Question

Ok, took a freshly installed Windows 7 machine and installed the latest SGN 7.00.2.23, got the following issue: 
 
 SATA operation mode configured to "RAID on" (BIOS default): 
 Sophos SafeGuard is starting. Please wait ... Invalid slice No /boot/loader 
 Thought this was an old problem... 
 
 -Stephen

Holger · Accepted Answer

You have to switch SATA mode to AHCI in BIOS. The hotfix is no longer needed, but AHCI mode is mandatory. 
Perhaps you have to re-install the operating system and SGN, but is working for sure with AHCI mode.

FormerMember · Answer

Hello Stephen, 
 
We've had no end of problems with those machines, but we do have a hotfix that should resolve the issue for you, please see here: www.sophos.com/.../121787.aspx