HP ML350G6 won't start with usb disk attached

[Attila Bonaldo]

The ML350G6 server we use won't power on if there is an usb disk attached to it. It tries to power on 3 times, powering vents ecc but then stops, no bios nothing. Front LED2 (health) is red in critical state but no led on mainboard stays amber to identify issue. Unplugging the usb makes the server start normally, no warnings or errors, usb disk works fine after. This issue does not happen with restarting the server only at power up. Any clues?
Thank you

[Jan Soska]

Hmm,
- try firmware update for server, could help.
- check usb setting in bios - maybe trehe is something "wrong"

jan

[Attila Bonaldo]

Did firmware upgrade with offline dvd, some components were updated but nothing changed, the issue stays the same...

[Proliant Watch]

Resolution : In G6 servers, RBSU (BIOS) has an option to disable "Legacy USB". When Legacy USB Disabled is selected, all USB ports are enabled under a USB-aware OS, but USB is not supported during POST or RBSU. Legacy USB Disabled also disables iLO 2 virtual devices.

Boot the server to RBSU
System Option >> USB options >> USB Control >> Legacy USB Disabled.

http://hpproliant.blogspot.com/2010/07/boot-hp-proliant-server-with-usb-hard.html

[Attila Bonaldo]

I have disabled the USB legacy but server still won't boot/post with usb disks attached.Any other suggestions?
Thank you

[Attila Bonaldo]

I still didn't find a solution to this problem, any updates about this matter?