Grub rescue mode after deleting kali linux

Question

I have a Windows 10 PC where Kali Linux was installed as a dual boot. I deleted the Kali partition from computer management. After I rebooted my PC, I got GRUB rescue mode > unknown filesystem.

set prefix=(hd0,gpt2)/boot/grub

I tried that with all my partitions and got unknown filesystem every time.

How do I fix this?

I don't have a Windows CD

Answer 1

Follow the instructions below,

1. Use another computer to download a eval copy of windows from Technet

2. Either use a DVD or a USB flash drive to make bootable media.

   A. If using a DVD, burn the downloaded iso to the dvd using a tool like IMGBurn. Here's a videotutorial

   B. If using a USB flash drive then download rufus select the iso and click start. Tutorial

3. Boot your computer up using the newly created media, depending on your pc you may have to change a setting in the BIOS or press a key on startup to boot from the usb drive.

4. Once it has loaded up click "Next"

5. Now click "Repair Your Computer"

6. Then Select "Troubleshoot"

7. Now Select "Advanced Options"

8. Finally Select "Startup Repair"

Let it run through and should be able to boot into Windows 10.

If the above does not work, Resuming from step 7 above.

8. Start by selecting command prompt.

9. Now select an account you have access to or your account (this account must be an administrator), and enter the accounts password then click continue.

10. You will now be at an elevated command prompt type in the the bold lowercase text below.

    diskpart list disk list part

You will now see one of two layouts this will determine how we proceed so make sure you follow the correct instructions.

Layout A (UEFI):

We know that this is a UEFI install because of DISK 0 (The Disk That Windows is installed on) is GPT and their are four partitions on that disk.

Layout B (BIOS/MBR)

We know that this is a BIOS/MBR disk because it's not GPT and it only has two partitions.

Instructions for Layout A:

If you have this start by deleting partitions 1,2, and 3 BE CARFUL NOT TO DELETE PART 4 OR WHICH EVER ONE IS THE BIGGEST USUALLY BOOT PARTITIONS ARE NO BIGGER THAN 1GB.

Use the command to delete the partitions

sel part 1
del part override

Repeat this for partitions 1-3

You should now have this.

Now type the following:

Create partition efi size=100
Format fs=fat32 label=”SYSTEM” quick
Assign letter=S
Create partition msr size=128
Exit

bcdedit C:\Windows /s S:

exit

You Should be all set.

MBR Instructions

This is even simpler.

Type the following:

Sel part 1
del part override
Create partition primary size=300
Format fs=ntfs label=”SYSTEM” quick
Assign Letter=S
active
exit

bcdboot C:\Windows /s S:
exit

That's it whether your on MBR/BIOS or UEFI you should now be able reboot and access Windows if not then there may be an error with your hard disk.