Windows 10: Removing ubuntu from EFI File. rmdir /s ubuntu not working

Hello, hope someone can help. I am trying to remove ubuntu from the EFI file. I assigned the EFI file with the letter Z and have managed to list the directory. When I use the command
PS Z:\EFI> rmdir /s ubuntu (to remove ubuntu from the directory)
I get the following error "Remove-Item : A positional parameter cannot be found that accepts argument 'ubuntu' At line:1 char:1
Invalid argument; (remove -item, ParameterBinding Exception
Positional ParameterNot Found

Any help would be greatly appreciated.
Thanks

:)

 

Remove Grand Unified Boot Loader (GRUB) from Windows 10

I had that issue when Grub was deposited on my SSD when I had installed a Linux distro to a USB using Live Linux.

I followed the above and it didn't work, so despite installing windows again, the following below worked for me (Dell Inspiron 3148 notebook). Differences in latest version of Windows 10: CommandPrompt (Admin) is now PowerShell (Admin), and I found I had
to omit the /S when I removed the ubuntu boot directory, so I typed rmdir ubuntu It is copied and pasted from the Ask Ubuntu forum.

This answer is for those with UEFI who have deleted the Ubuntu partitions before removing grub

You will be doing this from Windows 10. No bootable media required.

Where bootrec /fixmbr, bootsect /nt60 and the Ubuntu live with the boot-repair suggestions have failed, this has worked for me:

(This answer borrowed verbatim from here)

• Run a cmd.exe process with administrator privileges
• Run diskpart
• Type: list disk then sel disk X where X is the drive your boot files reside on
• Type list vol to see all partitions (volumes) on the disk
• Select the EFI volume by typing: sel vol Y where Y is the SYSTEM volume (this is almost always the EFI partition)
• For convenience, assign a drive letter by typing: assign letter=Z: where Z is a free (unused) drive letter
• Type exit to leave disk part
• While still in the cmd prompt, type: Z: and hit enter, where Z was the drive letter you just created.
• Type dir to list directories on this mounted EFI partition
• If you are in the right place, you should see a directory called EFI
• Type cd EFI and then dir to list the child directories inside EFI
• Type rmdir /S ubuntu to delete the ubuntu boot directory

Assuming you only ever had two operating systems (Win 10 & Ubuntu) you should now be able to boot directly to Windows without hitting the black grub screen.

 

Extending partition in Windows 10 raises "The operation you selected will convert the selected basic disk(s) to dynamic disk(s)"

I installed Ubuntu 16.04 alongside Windows 10, however I had to remove it due to some bugs (related to Ubuntu, not Windows). I removed the Ubuntu partitions (279.25 GB) from Disk Management, and now I am left with the situation
shown in the attached screenshot. I tried to extend the D volume by including the unallocated 279.25 GB. However when I try to extend it I get the warning message "The Operation you selected will convert the selected basic disk(s) to dynamic disk(s). If you
convert the disk to dynamic, you will not be able to start installed operating systems from any volume on the disk(s)...." etc.

Now, I do not want to convert the disk to dynamic, as I will probably install another Ubuntu distribution. How can I extend the drive D? Also, I don't know whether the 513 MB volume on Disk 1 (EFI System Partition) was created by
Ubuntu or not? If yes, should I delete it?