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What happens when you delete a boot program called GRUB?

What happens when you delete a boot program called GRUB?

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seriosh
Member
181
10-17-2026, 09:41 AM
#1
About a month ago, I installed Linux mint on my computer, but then I got bored of using it so I deleted the Linux mint partition from my Windows system. The problem is that GRUB (the boot menu) wasn't taken down when I did this, which means I have to type "exit" first to get back to normal use again. I tried fixing the booting command in Command Prompt, but even though I ran it as the user named system32, I still got an "access denied" message. I also tried using a USB drive with a Windows installation image and trying to do everything from there, but it still says access is forbidden. When I ran the repair command bootrec/rebuildbcd, it told me that zero windows installs were found. I'm confused because these commands don't seem to work even though they're supposed to be run as an administrator (super user).
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seriosh
10-17-2026, 09:41 AM #1

About a month ago, I installed Linux mint on my computer, but then I got bored of using it so I deleted the Linux mint partition from my Windows system. The problem is that GRUB (the boot menu) wasn't taken down when I did this, which means I have to type "exit" first to get back to normal use again. I tried fixing the booting command in Command Prompt, but even though I ran it as the user named system32, I still got an "access denied" message. I also tried using a USB drive with a Windows installation image and trying to do everything from there, but it still says access is forbidden. When I ran the repair command bootrec/rebuildbcd, it told me that zero windows installs were found. I'm confused because these commands don't seem to work even though they're supposed to be run as an administrator (super user).

S
SKY3R
Member
138
10-23-2026, 11:37 PM
#2
Can I just switch the boot order so Windows starts before the computer boots up normally?
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SKY3R
10-23-2026, 11:37 PM #2

Can I just switch the boot order so Windows starts before the computer boots up normally?

A
A_Sound
Senior Member
486
10-25-2026, 12:59 AM
#3
Hey guy, have you ever thought about trying this link: https://askubuntu.com/questions/429610/u...bootloader?
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A_Sound
10-25-2026, 12:59 AM #3

Hey guy, have you ever thought about trying this link: https://askubuntu.com/questions/429610/u...bootloader?

J
Judepude
Junior Member
41
10-25-2026, 01:19 AM
#4
@Order 66, I am happy to hear you asked about this since I was almost going to post the same question. I tried using an SSD with Ubuntu on my PC, but it didn't show up for me in that option (the seller said they wanted Linux and did not want it). Even though I followed a guide to make sure there were no Linux files left behind, Grub still comes up to me as well. Thanks to @Roland Of Gilead; I will try this tonight.
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Judepude
10-25-2026, 01:19 AM #4

@Order 66, I am happy to hear you asked about this since I was almost going to post the same question. I tried using an SSD with Ubuntu on my PC, but it didn't show up for me in that option (the seller said they wanted Linux and did not want it). Even though I followed a guide to make sure there were no Linux files left behind, Grub still comes up to me as well. Thanks to @Roland Of Gilead; I will try this tonight.

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willdoespixel
Member
208
10-28-2026, 02:54 PM
#5
I'll do this later, just in case the computer allows me to type the command, since that's where the trouble is. Any command that touches the main startup area gets blocked, but everything else goes through without a hitch.
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willdoespixel
10-28-2026, 02:54 PM #5

I'll do this later, just in case the computer allows me to type the command, since that's where the trouble is. Any command that touches the main startup area gets blocked, but everything else goes through without a hitch.

B
222
10-28-2026, 06:34 PM
#6
Right click there and pick "Run as Administrator". Check if that fixes anything for you or me.
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bakedpotatoboy
10-28-2026, 06:34 PM #6

Right click there and pick "Run as Administrator". Check if that fixes anything for you or me.

7
7bebe_Hasson
Member
50
10-28-2026, 07:11 PM
#7
I already gave up on trying to fix this. Even when someone named system 32 shows up and I'm running commands while starting up for repairs, I get an error saying access is denied.
7
7bebe_Hasson
10-28-2026, 07:11 PM #7

I already gave up on trying to fix this. Even when someone named system 32 shows up and I'm running commands while starting up for repairs, I get an error saying access is denied.

R
RedBoy002
Junior Member
31
Yesterday, 10:03 AM
#8
Do you have admin privileges when you log in? For example, do you have a separate admin account while you are the regular or power user?
R
RedBoy002
Yesterday, 10:03 AM #8

Do you have admin privileges when you log in? For example, do you have a separate admin account while you are the regular or power user?

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parking2525
Member
118
Yesterday, 11:05 AM
#9
I'm the boss.
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parking2525
Yesterday, 11:05 AM #9

I'm the boss.