[Solved] NTFS Repartitioning Cause Grub Rescue Mode In Dual Boot

[Kendoori]

I am a dual booter and had a reason to take an existing NTFS partition and subdivide it. I used GParted on LiveUSB to do this, but did the final formatting the unallocated space in Windows 10. When I went to reboot, I got the dreaded: "Grub Rescue Unknown Filesystem" prompt.

Can someone walk me through how to repair GRUB. I am doing this from my LiveUSB. My setup is below.

[arvy]

See four possibilities explained in this online article. As you are currently working in the Mint "live" environment, Method 2 is probably easiest for you.

[Kendoori]

I ended up going with Option 4, but instead of the installing it to the Live CD, I used the Live CD to make a bootable US with boot-repair on it:

https://sourceforge.net/projects/boot-repair-cd/files/

I'm back up and running; however, Windows was wiped from GRUB. It's still on my drive.

This may be a sign that it's time to wipe Windows, but I would like to try adding it back onto GRUB if I can.

BTW, I do have TimeShift backups that are accessible.

[Kendoori]

Found this and it worked:
https://www.trishtech.com/2017/09/quick ... ng-ubuntu/

[arvy]

Yeah, Method 2 specifies the need to run update-grub as the last step, but Method 4 omits any such mention for some unknown reason. Anyhow, method matters less than results. All's well that ends well. Congrats.