Thinkpads Forum

Hello everyone,

I installed linux (ubuntu 18.04) in dual boot with Windows 10 on my ThinkPad P52 laptop.
At the beginning, everything was going well.
Then, I installed NVIDIA drivers and I got some grub issues.
I tried to fix them by changing boot options(Legacy mode/ UEFI mode) and boot order ...
I tried to restore then default options by pressing F9 but
Now, I am not able to access windows and ubuntu.
When I turn on my computer, a repeated message came up in my screen:
--------------------------------------------
Broadcom UNDI PXE-2.1 v11.0.11
Copyright (c) 2000-2008 Broadcom Corporation
Copyright (c) 1997-2000 Intel Corporation
All rights reserved
PXE-E61: Media test failure, check cable
PXE-MOF: Existing Broadcom PXE ROM
-----------------------------------------------------------

And then, the boot menu appear ,
Windows and Ubuntu are not recognised and there is only those two entries:
nvme0 intel and PCI LAN

I tried to boot with a live USB and I verified that Windows and ubuntu partitions are always well installed in the system.

I run then LENOVO Diagnostics and I passed successfully all of them!!

Could you please help me to resolve this issue
Thank you!!

Looks like your main drive is not fitted properly.
Remove power, then take it out and reseat it.
Try again.

So, I tried to reset the laptop;

The following message disappeared
--------------------------------------------
Broadcom UNDI PXE-2.1 v11.0.11
Copyright (c) 2000-2008 Broadcom Corporation
Copyright (c) 1997-2000 Intel Corporation
All rights reserved
PXE-E61: Media test failure, check cable
PXE-MOF: Existing Broadcom PXE ROM
-----------------------------------------------------------

BUT, I cannot access to Windows and Ubuntu, they still don't appear in the boot menu ...
There is only nvme0 intel and PCI LAN.

I am sure that both of Linux and Windows are well installed
but I don't know how to add them in the boot menu.

Finally, I decided to solve the issue by reinstalling Windows from bootable USB,
Windows appear in the boot menu and it works well !!
I tried to reinstall Ubuntu 18.04 as well, but it still not recognized !
There is no grub menu when turn on the laptop,
Windows boot directly !!

Please let me know if you have any suggestions ..

Install a second drive for the second OS.
Or follow this: https://askubuntu.com/questions/826322/ ... clean-wipe

Thanks!

After trying many solutions,I find finally a way to solve that issue !!!!!!

From hard disk partitions in Windows, I deleted the ubuntu partition then extend this old partition with windows.
Again, I create a new empty partition by shrinking windows Volume!
Reinstall ubuntu in that new free partition!!

And that's it!

Unfortunately that didn't work for me.

I have Secure Boot set to Disabled and Boot Option to Both and Legacy First in the BIOS.

What am I missing?

I stopped dual booting off a single hard disk back in the early-2000s because it's much more hassle than running a host OS and virtual machines. I warn people away from dual booting unless their Thinkpad is too ancient to make a usable host.

A P52 has ample power to run VMs which is why I bought mine. Choose a host OS based on what you need to access hardware directly. Most users run Windows hosts but I prefer Linux. Then load all the guest OS you like! VMs are ideal for learning any OS because you can revert to a previous state instead of reinstalling.

Free VMs of most distros: https://www.osboxes.org/

Being able to run two or many OS at once beats dual-booting any day. If a VM no longer interests you, you can remove and replace it without disturbing your host!

Best to perform a clean Windows install and forget dual booting on such a modern machine. Virtual machines are far more flexible and a total backup is easy as copying the file. There are many VM tutorials online. Virtualbox is easy to begin with.