Hi Nizar,
If you have access to the LOC-2700 you can disable the GRUB password by running the setup.sh script at:
/opt/locserver/setup/setup.sh
When you get the question about the GRUB password you can disable using the option "D":
GRUB password is not currently configured.
Configure GRUB password (Y)es/(D)isable/(S)kip/(U)se default [Skip]: D
This is documented here:
http://www.cisco.com/en/US/docs/wireless/location/2700/quick/guide/la_gsg_main.html#wp1040488
In case you set that password and you forgot it, there's no recovery mechanism for it and you would need to replace the hardware (RMA).
I hope this helps.
Regards,
Federico
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