ThinkPad P52 boot issue

[asma]

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!!

[RealBlackStuff]

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

[asma]

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.

[asma]

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 ..

[RealBlackStuff]

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

[asma]

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!

[niteshapte]

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?

[farmall]

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.