Trouble after upgrading kernel to 2.4.18-19.8.0

[Leo Uzcategui <leo uzcategui com>]

Any help would be appreciated. I am new to Red Hat Linux.

After installing Red Hat 8.0 successfully from the downloaded CD iso
images, I used the RH notification alert to download and install the
latest versions of all installed packages, including the kernel.

Everything downloaded and installed fine. I then rebooted the system to
get the new kernel loaded but the new kernel fails to initialize. It is
unable to mount the root fs. Here is what I get after selecting new
kernel in GRUB menu:

[previous text deleted]
RAMDISK: compressed image found at block 0
Freeing initrd memory: 125k freed
EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
VFS: Mounted root (ext2 filesystem)
VFS: Cannot open root device "LABEL=/" or 00:00
Please append a correct "root=" boot option
Kernel panic: VFS unable to mount root fs on 00:00
[end of messages]

After the kernel upgrade, grub.conf contains:

default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
title Red Hat Linux (2.4.18-19.8.0)
        root (hd0,0)
        kernel /vmlinuz-2.4.18-19.8.0 ro root=LABEL=/
        initrd /initrd-2.4.18-19.8.0.img
title Red Hat Linux (2.4.18-14)
        root (hd0,0)
        kernel /vmlinuz-2.4.18-14 ro root=LABEL=/
        initrd /initrd-2.4.18-14.img

When I boot the 2.4.18-4 kernel, here is the corresponding kernel
startup log:

RAMDISK: Compressed image found at block 0
Freeing initrd memory: 126k freed
VFS: Mounted root (ext2 filesystem).
Journalled Block Device driver loaded
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Freeing unused kernel memory: 200k freed
usb.c: registered new driver usbdevfs
[... rest of output deleted]

Thanks in advance,
Leo