Not able to boot when installing Gentoo on a blade server.

[manu_leo]

Hi Experts, I am facing some issue while booting up a new server installed with Gentoo. I am using grub2. I comes up with the below error :-

Could not find the root block device in UUID=5d992e37-7d22-4243-8930-6357e73886a8.
Please specify another value or Press Enter for the same, shell for a shell or q to quit

So I went under the /boot/grub/grub.cfg file and replaced the root=UUID=5d992e37-7d22-4243-8930-6357e73886a8 with the partition name as root=/dev/sda1 . I have just configured 2 partitions - /dev/sda1 as the boot and /dev/sda2 as /home. Now the error that I get is :-

Block device /dev/sda1 is not a valid root device.
Please specify another value or Press Enter for the same, shell for a shell or q to quit.

Appreciate all your help in advance.

Thanks.