Ubuntu – How to fix Ubuntu 17.10 BIOS corruption, after uninstalling Ubuntu

17.10biosdual-bootgrub2uefi

I have a Lenovo Y50-70 and apparently I am suffering from this issue https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1734147

The problem is I have recently removed Ubuntu by deleting it's partition using Disk Manager in Windows 10, so I am unable to follow the steps described in the above link, since I don't have Ubuntu anymore.

So I am now stuck with a read-only BIOS and can't even boot from USB.

Is there a way to fix the BIOS corruption from Windows 10 ?

Best Answer

Well, if you can boot into Windows 10, here's the procedure for the fix:

Download the latest Ubuntu 17.10-series release from Canonical. Their build has the fix for the Intel SPI issue above.
Create a bootable USB from your Windows OS. You can use a tool such as etcher.io due to its' simplicity and speed.
With the now bootable USB drive still plugged in, hold down the Shift key and reboot your laptop from the Windows shutdown menu. This will take you to the recovery menu where you can select the option to boot up from a device. Select it and you should be able to boot up the Ubuntu 17.10 bootable USB.
Once it boots up, simply shut down or restart the machine from the live environment and confirm that the BIOS issue is fixed.

Report back with your findings.

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A workaround I ended up using for a similar issue (warning, ugly): Turn power off. Remove hard drive. Power-on. In my case the BIOS defaulted to looking for a USB boot in the absence of a hard drive. Then, as soon as USB starts to boot, plug the hard drive back in to stop it throwing a "No HDD!" fit.

Told you it was ugly. Worked though.

Ubuntu – Unable to make changes in BIOS after 17.10 installation

FINALLY, I GOT IT DONE!

I update the kernel to '4.14.9' and then restarted with ubuntu advanced options> with the latest kernel. and then restarted again. ALL BACK TO NORMAL.

This is what I did step by step

Install Ukuu

Its easy to update the kernel with Ubuntu Kernel Update Utility (Ukuu), Click here.
```
sudo apt-add-repository -y ppa:teejee2008/ppa
sudo apt-get update
sudo apt-get install ukuu
```
Update the kernel

Select the kernel 4.14.9 and select Install. wait for the installation to be completed and then restart the PC.
Restart the system with the latest kernel

From GRUB select the option which starts with "Advanced options".

Select Ubuntu GNU/Linux, with Linux 4.14.9-generic. wait for the system to load completely.
Restart again and go into the BIOS

Restart the system again and check the BIOS to see if the problem is fixed.

I can change settings from BIOS. BIOS is detecting new HDD. In short everything worked out.

Best Answer

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Ubuntu – Ubuntu 17.10 – Can’t change Bios settings, and can’t boot into Bios from Grub

Ubuntu – Unable to make changes in BIOS after 17.10 installation

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