muntroot prompt during FreeBSD 8.1 booting

[linuxunix]

I have a FreeBSD 8.1 installed on R610 hardware with H700 PERC card. Now I changed the card to H200 as per my requirement. While booting FreeBSD on it, it threw me to mountroot> prompt saying:

FAILED TO MOUNT ROOT:
Possible solution could be set vfs.root.mountfrom.options=rw
and then remove invalid options from /etc/fstab

Loader variables:

vfs.root.mountfrom=ufs:/dev/mfid0s1a
vfs.root.mountfrom.options=rw

Manual root filesystem specification:
<fstype>:<device> Mount using filesystem
eg: ufs:/dev/da0s1a
?     List valid disk boot devices
<empty line>  Abort manual input

I tried running

vfs.root.mountfrom=ufs:/dev/mfid0s1a
vfs.root.mountfrom.options=rw

but it dint work.

How to get this fixed?

Just to give you insight into what I did with the machine earlier:

FreeBSD Driver Installation

Updating the driver on an existing FreeBSD system:
In this case the kernel image has to be updated the new driver module. Following are the steps to update the kernel with new driver.

1. Make sure that kernel source has been installed on the system. If the kernel sources have been installed then there will be /usr/src/sys directory.
2. Move to the arch/conf directory and copy the GENERIC configuration file to the name you want to give your kernel. For example:
   [cmd=]# cd /usr/src/sys/i386/conf[/cmd]
   For 64 bit the path is
   [cmd=]# /usr/src/sys/amd64/conf[/cmd]
   [cmd=]# cp GENERIC MYKERNEL[/cmd]
3. Perform the following steps.
   a) Comment the following line in the file MYKERNEL by placing # at the beginning of the line.
   

        device     cbb    #cardbus (yenta) bridge

   b) Add the following line to the file /usr/src/sys/conf/files
   

       dev/mfi/mfi_syspd.c optional mfi

   (Note add this line next to the line which has dev/mfi/mfi_cam.c optional mfi)
4. Copy the zip (mfi.zip) file under the path /usr/src/sys/dev (Before proceeding to next step make sure that the directory with name “mfi” does not exist under path /usr/src/sys/dev/. If already a directory with name “mfi” exists, move it to some other folder. For example type, mv /usr/src/sys/dev/mfi /root/mfibackup).
5. Go to the directory /usr/src/sys/dev and run the following command to unzip the source.
   [cmd=]tar –x –f mfi.zip[/cmd]
6. To compile the kernel go to /usr/src directory and type
   [cmd=]make buildkernel KERNCONF=MYKERNEL[/cmd]
7. To install the new kernel type
   [cmd=]make installkernel KERNCONF=MYKERNEL[/cmd]
8. The new kernel will be copied to the /boot/kernel directory as /boot/kernel/kernel and the old kernel will be moved to /boot/kernel.old/kernel. Reboot the system to use the new kernel, which has the latest driver.

I was following the above doc and compiled the new kernel for mfi. I did tried this too:

Went to boot optoin 6:
boot ata
boot atapci
boot geom_bsd
boot geom_usb
boot mfi
enable-module mfi
mfi will be loaded
more /etc/fstab
<the above command shows me valid /dev/mfid0s1a and other mount points..donno if it really detected the disk>