3.6.2.9 NVMe Configuration
3.6.2.10 CSM Configuration
Item
CSM Support
GateA20 Active
Options
Disabled[Default],
Enabled
Upon Request[Default]
Always
OFT-15W33 Quick Reference Guide 77
Quick Reference Guide
Description
Enable/Disable CSM Support.
UPON REQUEST – GA20 can be disabled
using BIOS services. ALWAYS – do not
allow disabling GA20; this option is useful
when any RT code is executed above 1MB.