#THIS METHOD WORKS FOR ANY LINUX DISTRIBUTION
I was updating my Kali Linux Packages then there was a sudden power failure before the update was complete and my PC shut down. When i powered it on later i found myself in this trouble: 👇

grub rescue>

I spent a whole week on online help and tried out fixing the boot error with all the solutions i found but failed.
I tried all the (hd0,msdos5) stuff that you have also tried 😅 but my pc still returned "unknown file system" . Reason why this can't fix the problem is because my bootloader was not displaced but it was deleted or corrupted.
I only found one method that is very simple and quick.

Now get this:

BOOT REPAIR TOOL

• Create a Bootable Flash Disk with UBUNTU using Rufus or any other tool that can burn an iso image.
• Shut down your Pc then plug in the Flash Disk.
• Power on your pc and press the ESC button as the PC boots and then boot from the Flash DiskSelect TRY UBUNTU !!(do not instal Ubuntu)!! .
• Enter the Ubuntu System and Open the Terminal.
• Connect to a network. Enter the following commands:

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

"Press Enter”

sudo apt-get install -y boot-repair && boot-repair

"Press Enter”

• Click repair,complete then restart the computer and boot to linux.
• Open the terminal and type this command to update grub menu.

sudo update-grub

🥳🥳You fixed it.