Answer Posted / aakash mishra

this error is just due to prblem in grub.conf and or system
is unable to root filesystem. if the prob is due ti
grub.conf go in resue mode and open grub.conf which reside
in /boot/grub/grub.conf and make the entry given below!

default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Red Hat Enterprise Linux Server (2.6.18-53.el5)
root (hd0,0)
kernel /vmlinuz-<version> ro root=<root mount drive
ie. /dev/hda2> rhgb quiet
initrd /initrd-<version.img>
you can check your root mount drive by e2label utility!
#e2label /dev/sdan , where n is the no of ur partition.

what are different ways the context switch happens from user to kernel space or vice-versa ?

2128

What are system calls used for process management in linux?

574

I would like to know whether Simado and Setu products are they EPBX or not ?

1922

Explain process management system calls in linux?

536