0

I try to set up windows+linux on lenvo p50. Installation:

  1. windows installation, installer also made 100mb efi partition
  2. ubuntu installation, same disk

After that I would like to choose boot from "Windows Boot Loader" and "Ubuntu/Grub". However from the uefi I can only choose "Windows Boot Loader".

To overcome this I tried:

Did I made correct assumption that uefi can have both grub and windows boot loader entries to choose? Did anyone had similar problem?

Michal Kurtys
  • 1
  • Chances are your UEFI firmware is bugged that boot entry cannot be added "manually" (as opposed to "discovered"; i.e., relying on standard and Windows-specific fallback path). Are you sure that you have installed Ubuntu in UEFI mode though? Check whether there's e.g. an ubuntu directory under /EFI of the EFI partition, assuming you only have one on that drive. – Tom Yan Nov 15 '23 at 15:35
  • @TomYan I've got ubuntu dir in /EFI – Michal Kurtys Nov 15 '23 at 15:57
  • Lets see details: Please copy & paste the pastebin link to the BootInfo summary report ( do not post report), do not run the auto fix till reviewed. Use often updated ppa version over somewhat older ISO with your USB installer or any working install. https://help.ubuntu.com/community/Boot-Repair & https://sourceforge.net/p/boot-repair/home/Home/ Can you manually add entry from UEFI settings? https://askubuntu.com/questions/1492536/how-do-i-add-ubuntu-to-my-bios?noredirect=1#comment2615076_1492536 – oldfred Nov 15 '23 at 16:09
  • So have you checked whether your attempts of creating a boot entry has any persistent effect? I mean like do you see any new entry listed by efibootmgr right after your attempt, and also, whether the new entry vanish after a reboot? – Tom Yan Nov 15 '23 at 16:10
  • @TomYan they actualy do not vanish, however the boot order does not work and added entries to efibootmgr do not appear in UEFI menu – Michal Kurtys Nov 15 '23 at 17:04
  • @oldfred report https://pastebin.com/tzjBej4i and I could not resist trying repair (with no success) https://pastebin.com/jjLX2vSz – Michal Kurtys Nov 15 '23 at 17:25
  • and bcdedit enum result: https://pastebin.com/QcMmXR7F – Michal Kurtys Nov 15 '23 at 17:28
  • You show two entries, ubu & ubuntu for booting Ubuntu in efibootmgr, see lines 91 & 92/ Do those not show in UEFI one time boot menu? Some Lenovo have a locked UEFI, locked boot order, or Device Guard that prevents updates to UEFI. Do you have that setting in UEFI? You may need to review manual to see settings. – oldfred Nov 15 '23 at 17:54
  • There are something strange. First of all, Boot0001 and Boot0002 are indeed NOT in BootOrder, while they are apparently considered "active" (*). Some "inactive" boot entries are somehow in BootOrder. On the other hand, Boot0000 points to the the/some second partition (2) instead the first one of the/some drive. (While it's weird anyway, you could have been relying on Boot0019 to boot Windows.) – Tom Yan Nov 15 '23 at 19:12
  • Not sure what's really going on here, but I would try deleting all the boot entries or at least BootOrder with efibootmgr if I were you. I do NOT guarantee it is safe (They should all come back after a reboot. Except the Ubuntu / manual ones of course. The Windows one (Boot0000) should also come back after you boot Windows once. You'll need to make sure /EFI/Boot/bootx64.efi is a duplicate of /EFI/Microsoft/Boot/bootmgfw.efi beforehand though, which should allows you to use the "(NVMe) drive entry" to boot to Windows before it comes back, assuming you can see it on the boot menu. – Tom Yan Nov 15 '23 at 19:21
  • Or you may check first whether you can use BootNext to boot to Ubuntu. (efibootmgr -n 0001 or efibootmgr -n 0002) – Tom Yan Nov 15 '23 at 19:22

1 Answers1

0

Finally I reset the BIOS to default settings (and changed default legacy+uefi to uefi only boot) and finally all boot options listed by efibootmgr and bcdedit finally appeared as boot options at startup. After that I realised that there is "Boot Order Lock" option in UEFI BIOS - I don't know if it was enabled or disabled beforehand - I am pretty sure that I had checked all UEFI boot options (Secure boot, etc...) Anyway, everything is working fine now. Thank you all for very helpful advises!

One thing I am curious about - is it possible to add linux/grub option to windows boot manager - I tried this solution as aworkaround but it didn't work.

Michal Kurtys
  • 1