PSA: Dell Xps 9360 bios 1.2.5 may break dual boot
After SPECTRE and friends, there was a round of updates, including the 1.2.5 BIOS.
These seemed harmless/unavoidable enough, so I duly updated.
And found I could no longer dual boot.
Dell “new XPS 13” dual booting Windows and Ubuntu Xenial Xerus
setting up the new 9360 to also boot Ubuntu 16.04
Recently, shutting down the machine from Windows seems to trigger a popup from the system claiming the HDD cannot be found. Powering off, then rebooting seems to indicate the machine is fine.
Under 1.2.5 however the Grub menu is gone.
I can’t prove it, but beware of this update.