Follow these Steps Carefully (assuming Secure Boot is disabled)
Step 1: Run Disk management
In Windows 8 go to start or press
key on your keyboard and type "disk management" and click "Create and Format hard disk partitions"
 |
| Click on "Create and format Hard disk partitions" to Open Windows Disk Manager |
Now in Disk management delete both linux partition i.e swap and / of filesystem ext4
Step 3: Gain HDD space extend disk (optional)
Extend the adjacent windows partition to gain freespace that you just created after deleting the linux partitions.
Step 4 :Remove ubuntu or linuxmint entries from Bios Boot Menu
Reboot system . You may get error after rebooting stating
error partition not found
grub rescue>
Don't panic reboot your system in to the Bios setup and change the boot order to this.
Due to new UEFI boot systems ubuntu and linuxmint both menu entriesare added to Bios Boot menu.You can remove them, to do that follow next steps
Step 4.1
Insert Ubuntu live CD or Ubuntu Bootable USB .Restart and boot into ubuntu live session.
Step 4.2
Open
Terminal and type
sudo apt-get update
sudo apt-get install efibootmgr
Step 4.3
Don’t close terminal
type following cmds to remove bios boot menu entry.
sudo efibootmgr
you will able to see different menu entries.Look
for menu entry with name ”ubuntu” or “linuxmint” and see last number or
character before * sign next to boot name.
for example: my bios boot menu
entries were
Boot000A* ubuntu
Or
Boot0009* linuxmint
Type in terminal to remove these
entries
sudo efibootmgr –b 9 –B
(for me it is 9 for you it can be
any other number)
sudo efibootmgr -b A –B
(for me it
is 9 for you it can be any other number)
Done . Hooray !! :)
type sudo efibootmgr in terminal to crosscheck.
If you don't see the entries ubuntu or linuxmint you have successfully removed them from boot menu .
If you want remove ubuntu or linuxmint from Windows 7 Dual Boot read this blogpost.
If you have queries please feel free to comment !!
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