Lenovo Thinkcentre M92P When booting to USB installer disk installation proceeds as expected 1962 no operating system found When booting into preview mode all disks load without issue, so its not the cable Secure Boot option either not present or disabled Last time I fixed this by adding a fake line to the boot loader from instructions on the web Got a warning during installation about UEFI mode Windows Fast Startup disabled here's a list of prerequisites to run pc in uefi mode, like: 1) GPT partitioned disk (holds true if you want to run both win and linux) 2) efi partition with bootloaders 3) Bios is set to boot in uefi mode 4) efi vars are programmed https://forums.lenovo.com/t5/Other-Linux-Discussions/ThinkCentre-M92p-Linux-Boot-Problem/td-p/871891 UEFI vs Legacy https://askubuntu.com/questions/647303/uefi-or-legacy-which-is-advised-and-why http://www.daossoft.com/bios-tips/how-to-switch-from-uefi-to-legacy-on-lenovo.html [SOLVED] UEFI BIOS not recognizing Linux EFI Bootloader (Dual Boot) https://www.linuxquestions.org/questions/linux-newbie-8/uefi-bios-not-recognizing-linux-efi-bootloader-dual-boot-4175619918/ https://www.lifewire.com/change-the-efi-boot-order-efibootmgr-4028027 https://itsfoss.com/no-grub-windows-linux/ bcdedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi HERE IS THE MAGIC LINK https://forums.lenovo.com/t5/ThinkStation/UEFI-Mode-installation-of-Linux-distributions-on-Thinkstation/td-p/1018555 It appears that, prior to to following the BootOrder specified in the UEFI Boot Manager, the Lenovo BIOS first checks the UEFI Boot Manager configuration for an entry labelled "Windows Boot Manager".[1] More in the series of bizarre UEFI bugs https://mjg59.dreamwidth.org/20187.html How to install Linux on UEFI systems where GRUB fail to install? https://forums.lenovo.com/t5/Linux-Discussion/How-to-install-Linux-on-UEFI-systems-where-GRUB-fail-to-install/td-p/674103 Delete EFI entry https://unix.stackexchange.com/questions/223581/remove-windows-boot-manager Using BootRepair https://help.ubuntu.com/community/RecoveringUbuntuAfterInstallingWindows Kernel boot https://wiki.ubuntu.com/DebuggingKernelBoot