HI,

I updated my kernel with "yum update kernel" in terminal from 2.6.18-1.2708.fc6 (which works and i am on right now) to 2.6.19-1.2877.fc7

So I restarted my system to boot the new kernel but the boot freezes and this are the last few lines that come up:

Failed To Execute /init
Kernel Panic - Not Syncing: No Init Found. Try Passing Init = Option To Kernel.

I tried to press all kinds of buttons but nothing happed so the only thing i could go was hard shut down and boot back to 2.6.18-1.2708.fc6.

try using

init = 3 (or 4, with X)

Could you post up your grub.conf file - particularly the part which boots the different kernels?

this is what i get when i open up the grub.conf with vi:

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,2)
# kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00
# initrd /initrd-version.img
#boot=/dev/hda
default=0
timeout=5
splashimage=(hd0,2)/grub/splash.xpm.gz
hiddenmenu
title Fedora Core (2.6.19-1.2877.fc7)
root (hd0,2)
kernel /vmlinuz-2.6.19-1.2877.fc7 ro root=/dev/VolGroup00/LogVol00
initrd /initrd-2.6.19-1.2877.fc7.img
title Fedora Core (2.6.18-1.2708.fc6)
root (hd0,2)
kernel /vmlinuz-2.6.18-1.2708.fc6 ro root=/dev/VolGroup00/LogVol00
initrd /initrd-2.6.18-1.2708.fc6.img
title Other
rootnoverify (hd0,0)
chainloader +1

All I can think of is this: your new kernel ends in FC7 and the current release is FC6 (as with your old kernel) so the new one is likely to be a testing kernel. Unless there is something in the new kernel that you particularly need, I would set Grub to boot from the old one and wait for the newer kernel to become stable. (set default=0 to default=1)

Alternatively, uninstall the new one and reinstall it to see if that fixes the problem.

How do I reinstall?

sudo rpm -e rpmname