GRUB menuentry for OpenWrt [solved]

[balanga]

I've copied OpenWrt to a partition on a hard disk, but can't figure out the correct GRUB menuentry to boot up correctly. That is, it starts up and a screenful of msgs wizz pass which end with...

Rebooting in 1 second.

Is there any way to get this saved anywhere so I can see what is missing?

It may be that I have the UUID wrong. If so can I just specify 'root=hd0,gpt7' or somesuch?

Blockquote

[d687r02j8g]

This might be useful

How to install OpenWrt as a new os in the grub menu?

menuentry "OpenWRT" { linux /boot/vmlinuz root=PARTUUID=b3ade79d-02 rootfstype=ext4 rootwait console=tty0 console=ttyS0,115200n8 noinitrd } menuentry "OpenWRT (failsafe)" { linux /boot/vmlinuz failsafe=true root=PARTUUID=b3ade79d-02 rootfstype=ext4 rootwait console=tty0 console=ttyS0,115200n8 noinitrd } the root= value will probably be incorrect, you'll need to adjust it. And you'll need to redirect the boot to sdb, since it's where you put OpenWRT.

[balanga]

How do I get the correct PARTUUID?

Should 'file -s /dev/sda7' provide this?

[frollic]

you can replace it with root=/dev/sda7 or use blkid /dev/sda7

[balanga]

Many thanks root=/dev/sda7 worked fine.