[SOLVED] Want to Try OpenSUSE 15.1, but I Can't

I'd like to just blow up this HP Envy laptop. While experimenting with different distros; by mistake, I put the regular OpenSUSE installation DVD in the optical drive I'd like to try Open SUSE with, and I ejected it. Big mistake, I now get "Error ...grub-core/kern/disck.c:258:no such partition." I tried entering "LS," and "Boot," but they both returned, "No such command." grub rescue

I have a OpenSuse 15.1 live DVD in the external DVD drive. The internal optical drive is empty.

The last system that worked is a live DVD of Fedora 31; again, this was in the external optical drive.

Is there a way to reboot the laptop from this error screen?

Did you start an install and not complete it? I don't see how using a LiveCD would change anything. Also did you remove the LiveCD from the external drive and then reboot? If not it's probably detecting it and trying to boot from the CD.

I started to laptop from the installation DVD, and ejected the installation DVD after seeing the install images, it was then that I realized I was NOT using the live DVD. I ejected the DVD, put the live DVD in the same drive, and tried rebooting from that same live DVD; now, I see the grub error.

I'm thinking that it could be looking for the install DVD, but I'd rather try it live, I'm not sure that I want to install this, I want to try more live DVDs first.

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Whoa!Boot Repair did the trick. I can now install OpenSuse, Fedora, or any distro I wish.

This was a HUGE help. :-)