[ltp] No OS found on x121e after loading default settings in BIOS

Evgeni Golov linux-thinkpad@linux-thinkpad.org
Sun, 17 Jan 2016 19:34:30 +0100

Hi Frank,

On Sat, Jan 16, 2016 at 04:50:38PM +0100, Frank Baumeister wrote:

> I have an Thinkpad x121e running Ubuntu 15.10. Yesterday I had some issues
> with a hard lock of the bluetooth. I loaded the BIOS defaults and now there
> is no OS found.
> Is this a problem of UEFI or something else? Any ideas how to fix it?

Yeah, this could be UEFI vs Legacy Boot.

No idea how the x121e setup is structured, but you should somewhere find a
"boot mode" entry, or something similar. You should be able to switch between
"both", "UEFI" and "legacy/CSM", try if any change helps here.

Some background: UEFI and "legacy" (BIOS) boot is structured totally different.
While there is no need to use legacy boot these days, it may be that your
Ubuntu is installed in that way and the reset flipped to UEFI boot again.