#diskpart #cmd #windows #windows10
Create disk and manage partition
delete the partition of linux OR YOU CAN DO THIS AFTER DELETING ENTRIES OF LINUX
then open cmd as an admin
diskpart
list disk
select disk #disknumber
list partition
assign letter=z # to an 100mb
exit
z:
dir
cd EFI
rd ubuntu /s
bcdedit /enum firmware
bcdedit /delete #entries {6f7a0922-887f-11ef-a471-806e6f6e6963} - something like this.
#parition jo mujhe delete karni hai - J,K,M,Y & Z.
fix the bootloader of windows .
To remove the GRUB bootloader (from Ubuntu/Debian)
and restore Windows bootloader (Windows Boot Manager), follow these
steps carefully.
⚠️ Only do this if you've already
removed Linux (Ubuntu/Debian) from your system. If Linux is still installed
and you remove GRUB, your system may become unbootable.
✅ Step-by-Step Guide to Remove
Ubuntu/Debian Bootloader (GRUB) and Restore Windows Bootloader
🔹 Step 1: Boot into
Windows
Make sure you're logged into Windows
10 or 11.
🔹 Step 2: Open Command
Prompt as Administrator
Press Win + S and search for cmd.
Right-click on Command
Prompt → Run as administrator.
🔹 Step 3: Repair the
Windows Bootloader
Type the following commands one by one and press
Enter after each:
bcdedit /set {bootmgr} path \EFI\Microsoft\Boot\bootmgfw.efi
Then reboot:
shutdown /r /t 0
This sets Windows Boot Manager as the default and bypasses
GRUB.
🔹 Step 4: Optional –
Remove Ubuntu/Debian Boot Entry from UEFI
Sometimes, the GRUB entry remains in the UEFI boot menu
(even if it's not active). Here's how to remove it:
Option A: Use bcdedit to list and remove entries
(Windows)
Unfortunately, bcdedit won't always show Linux entries
stored in UEFI.
Option B: Use Windows PowerShell and bcdedit
Still, if visible, you can do:
bcdedit /enum firmware
Look for entries related to
Ubuntu/Debian, note the {identifier}, then delete using:
bcdedit /delete {identifier}
Option C: Use UEFI Firmware Settings
Reboot your PC and enter BIOS/UEFI
setup (Del, F2, or Esc during boot depending on your PC).
Look for Boot Order / Boot
Menu.
Remove or disable entries like
ubuntu or debian.
Save and exit.
🔹 Step 5: Optional –
Delete the Ubuntu/Debian Partition
Press Win + X → choose Disk
Management.
Locate partitions used by
Ubuntu/Debian (typically ext4 or "Healthy (Primary Partition)" with
no drive letter).
Right-click on those
partitions → Delete Volume.
You can then extend your
Windows partition to reclaim space.
✅ Done! Now Your System Will Boot
Directly into Windows
Let me know if you also want to reclaim the space from
Ubuntu partitions or create a dual boot again in the future.
Thanks for letting me know. If the GRUB bootloader is still
showing up when you start your PC, let’s use a more thorough method
using the Windows recovery tools to fully remove GRUB and restore the Windows
Bootloader (EFI-based system).
✅ Full Working Method to Remove
GRUB and Restore Windows Bootloader
🔧 You will need:
A Windows 10/11 bootable USB (can be created using
the Windows
Media Creation Tool or Rufus).
🔹 Step 1: Boot from
Windows Installation USB
Insert the USB and restart your PC.
Enter BIOS/UEFI (press F2, DEL, F10, or similar during
boot).
Set the USB as the first boot device, then save and
restart.
Once the installer starts, choose your language, then
click Next.
Click "Repair your computer" (bottom-left
corner).
Select Troubleshoot → Advanced options → Command
Prompt.
🔹 Step 2: Rebuild the EFI
Bootloader
Now type the following commands one by one:
diskpart
Then list disks:
list disk
Identify the disk where Windows is installed (usually Disk
0), then:
select disk 0
list partition
Find the EFI System Partition (usually 100–300 MB,
FAT32). Then:
select partition X
← Replace X with the EFI partition number
assign letter=S:
exit
Now run the boot repair:
bcdboot C:\Windows /s S: /f UEFI
Replace C: if your Windows partition is on a different
letter. You can check with dir C:.
You should see:
Boot files successfully created.
🔹 Step 3: Reboot and
Check
Type:
exit
Then restart your system. It should now boot directly
into Windows with GRUB removed.
🔹 Step 4 (Optional):
Remove Leftover GRUB Entries from UEFI
Once back in Windows, press Win + R, type: cmd, right-click
and choose Run as Administrator.
Type:
bcdedit /enum firmware
If you see Linux entries (ubuntu/debian), delete them like
this:
bcdedit /delete {identifier}
✅ Final Step (Optional): Delete
Ubuntu/Debian Partitions
Press Win + X → Disk Management.
Right-click on the old Ubuntu partitions (ext4 — usually
unrecognized in Windows) and select Delete Volume.
Extend your Windows partition to take up the free space if
desired.
Let me know if you need help identifying your EFI partition
or which letter your Windows drive is using in the recovery environment. I can
guide you step-by-step based on your screen output.
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