can't find RAMDISK initialized
I am trying to config the RAM disk on CentOS 5.5
/etc/grub.conf
title CentOS (2.6.18-194.el5)
root (hd0,0)
kernel /vmlinuz-2.6.18-194.el5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet ramdisk_size=2048000
initrd /initrd-2.6.18-194.el5.img
#reboot
root@dl360-157# ls -al /dev/ram*
lrwxrwxrwx 1 root root 4 Sep 30 15:02 /dev/ram -> ram1
brw-r----- 1 root disk 1, 0 Sep 30 15:02 /dev/ram0
brw-r----- 1 root disk 1, 1 Sep 30 15:02 /dev/ram1
brw-r----- 1 root disk 1, 10 Sep 30 15:02 /dev/ram10
brw-r----- 1 root disk 1, 11 Sep 30 15:02 /dev/ram11
brw-r----- 1 root disk 1, 12 Sep 30 15:02 /dev/ram12
brw-r----- 1 root disk 1, 13 Sep 30 15:02 /dev/ram13
brw-r----- 1 root disk 1, 14 Sep 30 15:02 /dev/ram14
brw-r----- 1 root disk 1, 15 Sep 30 15:02 /dev/ram15
brw-r----- 1 root disk 1, 2 Sep 30 15:02 /dev/ram2
brw-r----- 1 root disk 1, 3 Sep 30 15:02 /dev/ram3
brw-r----- 1 root disk 1, 4 Sep 30 15:02 /dev/ram4
brw-r----- 1 root disk 1, 5 Sep 30 15:02 /dev/ram5
brw-r----- 1 root disk 1, 6 Sep 30 15:02 /dev/ram6
brw-r----- 1 root disk 1, 7 Sep 30 15:02 /dev/ram7
brw-r----- 1 root disk 1, 8 Sep 30 15:02 /dev/ram8
brw-r----- 1 root disk 1, 9 Sep 30 15:02 /dev/ram9
lrwxrwxrwx 1 root root 4 Sep 30 15:02 /dev/ramdisk -> ram0
root@dl360-157# dmesg | grep RAMDISK
root@dl360-157# <nothing like RAMDISK driver initialized shows>
what steps are missing ?
thanks
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