On 10/12/10 17:17, Ritika Garg wrote: > Whenever the system boots there is sound ( beep ). Is there any way to > disable it? > Depends on if it is an OS or hardware thing. If it's an OS thing, the easiest way is to do: [root at centos:~ #] modprobe -r pcspkr Or to make this permanent, add the following line to /etc/modprobe.d/blacklist blacklist pcspkr kind regards, David Sommerseth