How to emove Linux and leave only Windows installed

 To uninstall Linux and keep only Windows in a dual-boot setup, you'll need to remove the Linux partition and restore the Windows bootloader. Here's a step-by-step guide:

1. Backup Your Data

Before proceeding, backup any important data from your Linux partitions, as you'll be deleting them in the process.

2. Boot into Windows

• Start your system and boot into Windows. If you're using a boot menu, select the Windows partition.

3. Remove Linux Partitions

In Windows, follow these steps to delete the Linux partitions:

Using Disk Management:

1. Press Win + X and select Disk Management.
2. Locate the Linux partitions. These partitions will typically not have a drive letter and will be formatted in Linux-specific file systems like ext4 or swap.
   • Your Windows partition will usually be labeled as C: (NTFS), and Linux partitions will likely be labeled as unallocated space, or their type might be ext4 or swap.
3. Right-click on the Linux partitions (e.g., the partition with ext4 or swap) and select Delete Volume.
4. After deleting Linux partitions, you will have "Unallocated Space" on the disk.

Optional: Resize Windows Partition (If Necessary)

If you want to reclaim the unallocated space and extend your Windows partition:

1. Right-click on the Windows partition (usually C:) and select Extend Volume.
2. Follow the wizard to use the unallocated space and expand your Windows partition.

4. Remove Linux Boot Loader (GRUB)

Linux uses a bootloader called GRUB, which will need to be removed and replaced with the Windows bootloader.

Method 1: Using Windows Recovery Environment (WinRE)

1. Create a Windows Recovery USB (if you don't already have one). You can create it via the Microsoft Media Creation Tool.
2. Boot your system from the Windows Recovery USB. To do this, you may need to change the boot order in your BIOS/UEFI settings.
3. Once booted into the Windows Recovery Environment (WinRE), select Troubleshoot > Advanced Options > Command Prompt.
4. In the Command Prompt, type the following command to repair the Windows bootloader:

   bootrec /fixmbr
   bootrec /fixboot
   bootrec /rebuildbcd
   

5. After running these commands, type exit to close the Command Prompt and restart your system. Your computer should now boot directly into Windows without showing the GRUB menu.

Method 2: Using a Windows Installation Disc/USB (If WinRE Doesn’t Work)

1. Insert a Windows installation USB or DVD and boot from it.
2. Select Repair your computer > Troubleshoot > Advanced options > Command Prompt.
3. Once in the Command Prompt, type the following commands:

   bootrec /fixmbr
   bootrec /fixboot
   bootrec /rebuildbcd
   

4. Restart the system, and your computer should now boot directly into Windows.

5. Remove Linux Boot Entries (Optional)

After removing Linux, the boot manager might still show Linux boot entries in the BIOS/UEFI settings or the Windows Boot Manager. You can remove these using the following:

Using bcdedit in Windows:

1. Open Command Prompt in Windows as an administrator (right-click on Start and choose Command Prompt (Admin)).
2. Type bcdedit to see all boot entries.
3. Look for any Linux-related entries under the "Windows Boot Loader" section.
4. To remove a Linux boot entry, use:

   bcdedit /delete {identifier}
   

   Replace {identifier} with the actual identifier of the Linux entry (you will see a long alphanumeric identifier when you run bcdedit).

6. Restart Your PC

After you've completed these steps, restart your computer. You should now boot directly into Windows, with Linux completely removed.

Summary:

1. Backup your data.
2. Delete Linux partitions from Windows Disk Management.
3. Restore the Windows bootloader using the bootrec commands.
4. Optionally remove any leftover boot entries using bcdedit.

This process will completely remove Linux and leave only Windows installed on your system.