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grub-install cannot find device VolGroup on a ext4 partition

I have a VMwave image with CentOS 5.7 installed. The first partition (/dev/sda1) was /boot and the second was a logical volume (/dev/sda2). I have decided to remove the logical volume and combine the 2 partitions.
I setup a new VMware hard drive and formatted as a single partition (/dev/sdb1). Next I booted Ubuntu live CD and mounted the new partition and the partitions with the logical volume and then the boot partition inside as follows:

Code:

mount /dev/sda2 /media/hd1

mount /dev/sda1 /media/hd1/boot

mount /dev/sdb1 /media/hd2

I copied all files from hd1 to hd2 using:

Code:

cp -avf /media/hd1/* /media/hd2

Next I connected the dev and proc directories to the new partition:

Code:

mount --bind /dev /media/hd2/dev

mount --bind /proc /media/hd2/proc

I run

Code:

grub-install --recheck /dev/sdb

but it gives me an error.

At this point I thought it should be almost done, I just need to reinstall grub, but grub-install tells me that

Code:

could not find device for /dev/mapper/VolGroup00-LogVol00

could not find device for /dev/mapper/VolGroup00-LogVol00

could not find device for /dev/mapper/VolGroup00-LogVol00

/dev/mapper/VolGroup00-LogVol00: Not found or not a block device.

What am I doing wrong?

I changed Ubuntu Live CD to CentOS 5.7 dvd in rescue mode, but it is doing the same thing.

The reason for removing the logical volume in the VMware is to reduce the virtual disk space and remove the more complicated to manage (for me) logical volume.

Try running grub-install from a chroot environment.

Code:

chroot /media/hd2 grub-install --recheck /dev/sda

If you still get the error, edit /media/hd2/boot/grub/device.map:

Code:

hd0 /dev/sda

and run grub-install from the chroot environment:

Code:

chroot /media/hd2 grub-install /dev/sda

Hope it helps.

Yes, I forgot to mention that I did use

Code:

chroot /media/hd2

I checked the device.map and I made sure that it contains the entry

Code:

hd0 /dev/sda

but still I get the same error.

I think I got little further by binding also the sys directory

Code:

mount --bind /sys /media/hd2/sys

I rebuild the mtab file using

Code:

grep -v rootfs /proc/mounts > /etc/mtab

Now, grub-install gives me:

Code:

df: cannot read table of mounted file systems

Thanks though, I am going to restart from scratch since I have the original VMware drive.