Select Next One-Time Boot --> set 'Boot Next Value' as 'F1 Setup'. Save Settings. Under clie nt, open putty and set as below: Select 'Serial' in 'Connection Type' Change 'Speed' to '115200' Navigate to Connection, Serial and change 'Flow control' to 'None' Click 'open'. Restart system and boot into UEFI setup menu. " />
UEFI debug messages printed in setup - Lenovo NeXtScale nx360 M5, NeXtScale nx360 M5 DWC - Lenovo Support HK