Re: I HAD Win 10...now I don't. You can't get there from here.
Have you tried Linux tools like Boot Repair or Grub Customizer? If you can't get into your Linux installation, you can install and run them from a live CD/DVD/USB session. You may need to add the associated PPAs (I don't know them offhand, but a quick search should turn them up), but there is no problem "installing" them in the live session's RAMdisk and using them there. I've done it to fix GRUB before too.
Biting the hand that feeds IT
