Arrrgggg! BIOS Update Wipes GRUB…

This might be the “new normal” with UEFI BIOSes but when I updated the BIOS of my IdeaPad Y50 the GRUB2 boot manager was gone and replaced by Windows 10’s boot loader.

Even the upgrade from Windows 8.1 to 10 didn’t mess with GRUB. (Kudo’s Microsoft – Credit where credit is due!)

Don’t have a cow, man!

It was, of course fixed by booting to Linux Mint 17.2 LiveCD. Unfortunately, I still cannot get the “normal” GRUB fix to work. You know:

sudo mount /dev/sda1 /mnt
sudo chroot /mnt
sudo update-grub2

Which gives the error:

/usr/sbin/grub-probe:error:failed to get canonical path of /cow.


Much Googling… Many hits on “I have the same problem…”

The easy fix? Use Boot-Repair. It isn’t included in the LiveCD so you have to download it with:

sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install -y boot-repair && boot-repair

I ended up having to clean up GRUB – how many different entries CAN it find? All of them, apparently. But, this is better than having to do a re-install….


About Mike Pelley

Let’s see… A little about me… I’ve been around information technology since 1983 with computers such as DEC Rainbows (weird machine – the standard DOS couldn’t format its own floppy disks – remember them? – and I had to format them on a friend’s IBM PC) to Radio Shack TRS-80 to Apple ][e and Apple //c in the beginning. I have programmed in 8-bit assembly language on 6502, FORTRAN and COBOL on IBM System/370 (and I still hate JCL), VAX BASIC and COBOL (and a weird and massive WordPerfect 4.0 macro) on DEC VMS (Alpha), C/C++ on Digital Unix (ALPHA), and C/C++, Perl (it may be powerful but I still hate it), PHP on Linux (Red Hat, Centos, Ubuntu, etc.). I have work with databases such as Digital RDB (later to become Oracle RDB), Oracle DBMS, Microsoft SQL Server, MySQL and PostgreSQL on VAX, Alpha, Sun and Intel. Check out my professional profile and connect with me on LinkedIn. See I still think that Digital created some of the best ideas in the world: VAX clustering, DSSI disks (forerunner to SCSI) and the Alpha processor (first commercial 64-bit processor – Red Hat screamed on an Alpha!). DEC just could not seem to be able to give air conditioners away to someone lost in the Sahara Desert! VMware is one of the best ways to get the most out of an x64 server. And I have tried Oracle VM, Virtual Box and Microsoft Virtual Server. Outside of that I am a huge military history buff starting in the early 20th century. I love Ford Mustangs (my ’87 Mustang GT was awesome) and if I had the money I would have a Porsche 928S4. If I had a lot of money I would have a Porsche 911 Turbo. I also play too much AmrA 3 Exile mod. Over 5,000+ hours... I have a wonderful son, Cameron. I have a long suffering (Do you really need all that computer junk?) wife, Paula. I live in Paradise, Newfoundland and Labrador.
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