Grub2 in usb stick

[drimades]

Hi!
I installed GRUB2 on a usb stick with:

sudo grub-install --boot-directory=/mnt/lfs/boot /dev/sdb

down here you can see how is the usb mounted:

/dev/sdb1 on /mnt/lfs type ext2 (rw)

The installation process finished successfully.
Then I edited grub.cfg in /mnt/lfs/boot/grub to the following:

set default=0
set timeout=5

insmod ext2
set root=(hd1,1)

menuentry "LFS test" {
 linux /boot/vmlinuz root=/dev/sdb1 ro
}

When I restart the system booting from usb it results in a blank screen with the cursor blinking after 4-5 empty lines. Any idea why it's not showing the boot menu?

[devils casper]

Try replacing root entries from sdb to sda in grub.cfg

set root=(hd0,1)

linux /boot/vmlinuz root=dev/sda1 ro

[drimades]

I'm trying it right now. The strange thing is that if I enter the grub shell and try to set the root in linux /boot/vmlinuz root=...
it doesnt recognize any sd... device?!

[drimades]

Try replacing root entries from sdb to sda in grub.cfg

set root=(hd0,1)

linux /boot/vmlinuz root=dev/sda1 ro

no results

[drimades]

If I enter the grub shell my usb stick is recognized as (hd1,gpt1) (?), which is quite new naming for me.

[devils casper]

Post the partition structure of stick. Why do you want to manually install GRUB2 in stick. There are a lot of packages available for GRUB install.

[drimades]

I switched to a HDD partition for now. I created a partition in my HDD (/dev/sda3) and trying to boot the system from there. In the grub shell I write

set default=0 
set timeout=5
insmod ext2 
set root=(hd0, msdos3)
linux	/boot/vmlinuz root=/dev ro
boot

The strange things is that in root=/ if I press <tab> it gives me as possibilities only dev and console! Where are the other partitions?
It start decompressing the kernel and it stops after a while with a Kernel panic fatal exception!