How to fix “Error: unknown filesystem. grub rescue>“
I have Windows 10 and Ubuntu on my PC. After I updated Windows I received this message:
Error: unknown filesystem
grub rescue>
I entered these commands:
set root=(hd0,6)
set prefix=(hd0,6)/boot/grub
insmod normal
normal
It worked fine but when I restarted the PC the same error message came up, so I deleted the partitions with Ubuntu. I restarted the PC and again the same error. Now when I try to put the commands from above I receive unknown filesystem.
What do I need to do to avoid this grub rescue?
I tried to run the commands given in the answer in a root shell but when I try to run the first command mount -t ext4 /dev/sda6 /mnt/ubuntu it returns
mount: /mnt/ubuntu: mount point does not exist
Maybe I haven't selected the correct partition so here I give you a link to check all my partitions and decide which one is the partition with Ubuntu:
grub2 grubrescue
edited Nov 16 '18 at 12:45
Zanna
51.2k13139242
asked Nov 6 '18 at 7:38
Capatina StefanCapatina Stefan
113
bumped to the homepage by Community♦ 14 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
I have Windows 10 and Ubuntu on my PC. After I updated Windows I received this message:
Error: unknown filesystem
grub rescue>
I entered these commands:
set root=(hd0,6)
set prefix=(hd0,6)/boot/grub
insmod normal
normal
It worked fine but when I restarted the PC the same error message came up, so I deleted the partitions with Ubuntu. I restarted the PC and again the same error. Now when I try to put the commands from above I receive unknown filesystem.
What do I need to do to avoid this grub rescue?
I tried to run the commands given in the answer in a root shell but when I try to run the first command mount -t ext4 /dev/sda6 /mnt/ubuntu it returns
mount: /mnt/ubuntu: mount point does not exist
Maybe I haven't selected the correct partition so here I give you a link to check all my partitions and decide which one is the partition with Ubuntu:
grub2 grubrescue
edited Nov 16 '18 at 12:45
Zanna
51.2k13139242
asked Nov 6 '18 at 7:38
Capatina StefanCapatina Stefan
113
bumped to the homepage by Community♦ 14 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
3
Possible duplicate of Grub rescue - error: unknown filesystem
– karel
Nov 6 '18 at 8:09
1
You deleted the Ubuntu partition, so maybe what you want is How to remove Ubuntu and put Windows back on?
– Zanna
Nov 16 '18 at 12:46
add a comment |
I have Windows 10 and Ubuntu on my PC. After I updated Windows I received this message:
Error: unknown filesystem
grub rescue>
I entered these commands:
set root=(hd0,6)
set prefix=(hd0,6)/boot/grub
insmod normal
normal
It worked fine but when I restarted the PC the same error message came up, so I deleted the partitions with Ubuntu. I restarted the PC and again the same error. Now when I try to put the commands from above I receive unknown filesystem.
What do I need to do to avoid this grub rescue?
I tried to run the commands given in the answer in a root shell but when I try to run the first command mount -t ext4 /dev/sda6 /mnt/ubuntu it returns
mount: /mnt/ubuntu: mount point does not exist
Maybe I haven't selected the correct partition so here I give you a link to check all my partitions and decide which one is the partition with Ubuntu:
grub2 grubrescue
edited Nov 16 '18 at 12:45
Zanna
51.2k13139242
asked Nov 6 '18 at 7:38
Capatina StefanCapatina Stefan
113
I have Windows 10 and Ubuntu on my PC. After I updated Windows I received this message:
Error: unknown filesystem
grub rescue>
I entered these commands:
set root=(hd0,6)
set prefix=(hd0,6)/boot/grub
insmod normal
normal
It worked fine but when I restarted the PC the same error message came up, so I deleted the partitions with Ubuntu. I restarted the PC and again the same error. Now when I try to put the commands from above I receive unknown filesystem.
What do I need to do to avoid this grub rescue?
I tried to run the commands given in the answer in a root shell but when I try to run the first command mount -t ext4 /dev/sda6 /mnt/ubuntu it returns
mount: /mnt/ubuntu: mount point does not exist
Maybe I haven't selected the correct partition so here I give you a link to check all my partitions and decide which one is the partition with Ubuntu:
grub2 grubrescue
grub2 grubrescue
edited Nov 16 '18 at 12:45
Zanna
51.2k13139242
asked Nov 6 '18 at 7:38
Capatina StefanCapatina Stefan
113
edited Nov 16 '18 at 12:45
Zanna
51.2k13139242
asked Nov 6 '18 at 7:38
Capatina StefanCapatina Stefan
113
edited Nov 16 '18 at 12:45
Zanna
51.2k13139242
edited Nov 16 '18 at 12:45
Zanna
51.2k13139242
edited Nov 16 '18 at 12:45
Zanna
51.2k13139242
51.2k13139242
asked Nov 6 '18 at 7:38
Capatina StefanCapatina Stefan
113
asked Nov 6 '18 at 7:38
Capatina StefanCapatina Stefan
113
asked Nov 6 '18 at 7:38
Capatina StefanCapatina Stefan
113
113
bumped to the homepage by Community♦ 14 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
bumped to the homepage by Community♦ 14 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
3
Possible duplicate of Grub rescue - error: unknown filesystem
– karel
Nov 6 '18 at 8:09
1
You deleted the Ubuntu partition, so maybe what you want is How to remove Ubuntu and put Windows back on?
– Zanna
Nov 16 '18 at 12:46
add a comment |
3
Possible duplicate of Grub rescue - error: unknown filesystem
– karel
Nov 6 '18 at 8:09
1
You deleted the Ubuntu partition, so maybe what you want is How to remove Ubuntu and put Windows back on?
– Zanna
Nov 16 '18 at 12:46
3
3
Possible duplicate of Grub rescue - error: unknown filesystem
– karel
Nov 6 '18 at 8:09
Possible duplicate of Grub rescue - error: unknown filesystem
– karel
Nov 6 '18 at 8:09
1
1
You deleted the Ubuntu partition, so maybe what you want is How to remove Ubuntu and put Windows back on?
– Zanna
Nov 16 '18 at 12:46
You deleted the Ubuntu partition, so maybe what you want is How to remove Ubuntu and put Windows back on?
– Zanna
Nov 16 '18 at 12:46
add a comment |
1 Answer
1
active
oldest
votes
You'd need a live disk running Ubuntu or any Linux variant.
After such, follow the commands here to mount the necessary drives and chroot into the directory.
For the CHROOT PROCESS
See this article
I've highlighted the commands you can use in the window below:
sudo mount -t ext4 /dev/sda6 /mnt/ubuntu
Confirm that sda6 is your current root partition.
sudo mount /dev/sda1 /mnt/ubuntu/boot
Check if this drive is your windows boot partition
Then follow up and mount the other required filesystems
sudo mount -t proc none /mnt/ubuntu/proc
sudo mount -o bind /dev /mnt/ubuntu/dev
sudo mount -o bind /sys /mnt/ubuntu/sys
Follow up to chroot here using this:
chroot /mnt/ubuntu /bin/bash
You should get into another window screen with a terminal window
COMMANDS TO FIX FILESYSTEM MAPPINGS
Run the following to fix your issue
sudo grub-install /dev/sda
sudo update-grub
That should fix your GRUB issues for you automatically with the default filesystems containing your various operating systems.
edited Nov 16 '18 at 12:41
Zanna
51.2k13139242
answered Nov 6 '18 at 8:25
Bakare EmmanuelBakare Emmanuel
263
But if I want to get rid of Ubuntu and run windows only is there any easier method?
– Capatina Stefan
Nov 6 '18 at 10:34
You'd have to delete the Ubuntu partition and then restore the windows grub. Restoring it is optional as you could always continue with the linux one, if you're interested tho, it requires you have a windows bootable disk to get to the windows recovery option and reset your BCD configuration. More details here about how to do that after deleting the partition here: lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508
– Bakare Emmanuel
Nov 6 '18 at 14:56
What is the command for writing on this site “program language”?
– Capatina Stefan
Nov 7 '18 at 10:17
Sorry, could you expatiate on what you mean ---- "by writing on the site 'program language' " please
– Bakare Emmanuel
Nov 7 '18 at 13:05
How can i write with that font with grey background
– Capatina Stefan
Nov 7 '18 at 14:19
|
show 2 more comments
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "89"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1090423%2fhow-to-fix-error-unknown-filesystem-grub-rescue%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You'd need a live disk running Ubuntu or any Linux variant.
After such, follow the commands here to mount the necessary drives and chroot into the directory.
For the CHROOT PROCESS
See this article
I've highlighted the commands you can use in the window below:
sudo mount -t ext4 /dev/sda6 /mnt/ubuntu
Confirm that sda6 is your current root partition.
sudo mount /dev/sda1 /mnt/ubuntu/boot
Check if this drive is your windows boot partition
Then follow up and mount the other required filesystems
sudo mount -t proc none /mnt/ubuntu/proc
sudo mount -o bind /dev /mnt/ubuntu/dev
sudo mount -o bind /sys /mnt/ubuntu/sys
Follow up to chroot here using this:
chroot /mnt/ubuntu /bin/bash
You should get into another window screen with a terminal window
COMMANDS TO FIX FILESYSTEM MAPPINGS
Run the following to fix your issue
sudo grub-install /dev/sda
sudo update-grub
That should fix your GRUB issues for you automatically with the default filesystems containing your various operating systems.
edited Nov 16 '18 at 12:41
Zanna
51.2k13139242
answered Nov 6 '18 at 8:25
Bakare EmmanuelBakare Emmanuel
263
But if I want to get rid of Ubuntu and run windows only is there any easier method?
– Capatina Stefan
Nov 6 '18 at 10:34
You'd have to delete the Ubuntu partition and then restore the windows grub. Restoring it is optional as you could always continue with the linux one, if you're interested tho, it requires you have a windows bootable disk to get to the windows recovery option and reset your BCD configuration. More details here about how to do that after deleting the partition here: lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508
– Bakare Emmanuel
Nov 6 '18 at 14:56
What is the command for writing on this site “program language”?
– Capatina Stefan
Nov 7 '18 at 10:17
Sorry, could you expatiate on what you mean ---- "by writing on the site 'program language' " please
– Bakare Emmanuel
Nov 7 '18 at 13:05
How can i write with that font with grey background
– Capatina Stefan
Nov 7 '18 at 14:19
|
show 2 more comments
You'd need a live disk running Ubuntu or any Linux variant.
After such, follow the commands here to mount the necessary drives and chroot into the directory.
For the CHROOT PROCESS
See this article
I've highlighted the commands you can use in the window below:
sudo mount -t ext4 /dev/sda6 /mnt/ubuntu
Confirm that sda6 is your current root partition.
sudo mount /dev/sda1 /mnt/ubuntu/boot
Check if this drive is your windows boot partition
Then follow up and mount the other required filesystems
sudo mount -t proc none /mnt/ubuntu/proc
sudo mount -o bind /dev /mnt/ubuntu/dev
sudo mount -o bind /sys /mnt/ubuntu/sys
Follow up to chroot here using this:
chroot /mnt/ubuntu /bin/bash
You should get into another window screen with a terminal window
COMMANDS TO FIX FILESYSTEM MAPPINGS
Run the following to fix your issue
sudo grub-install /dev/sda
sudo update-grub
That should fix your GRUB issues for you automatically with the default filesystems containing your various operating systems.
edited Nov 16 '18 at 12:41
Zanna
51.2k13139242
answered Nov 6 '18 at 8:25
Bakare EmmanuelBakare Emmanuel
263
But if I want to get rid of Ubuntu and run windows only is there any easier method?
– Capatina Stefan
Nov 6 '18 at 10:34
You'd have to delete the Ubuntu partition and then restore the windows grub. Restoring it is optional as you could always continue with the linux one, if you're interested tho, it requires you have a windows bootable disk to get to the windows recovery option and reset your BCD configuration. More details here about how to do that after deleting the partition here: lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508
– Bakare Emmanuel
Nov 6 '18 at 14:56
What is the command for writing on this site “program language”?
– Capatina Stefan
Nov 7 '18 at 10:17
Sorry, could you expatiate on what you mean ---- "by writing on the site 'program language' " please
– Bakare Emmanuel
Nov 7 '18 at 13:05
How can i write with that font with grey background
– Capatina Stefan
Nov 7 '18 at 14:19
|
show 2 more comments
You'd need a live disk running Ubuntu or any Linux variant.
After such, follow the commands here to mount the necessary drives and chroot into the directory.
For the CHROOT PROCESS
See this article
I've highlighted the commands you can use in the window below:
sudo mount -t ext4 /dev/sda6 /mnt/ubuntu
Confirm that sda6 is your current root partition.
sudo mount /dev/sda1 /mnt/ubuntu/boot
Check if this drive is your windows boot partition
Then follow up and mount the other required filesystems
sudo mount -t proc none /mnt/ubuntu/proc
sudo mount -o bind /dev /mnt/ubuntu/dev
sudo mount -o bind /sys /mnt/ubuntu/sys
Follow up to chroot here using this:
chroot /mnt/ubuntu /bin/bash
You should get into another window screen with a terminal window
COMMANDS TO FIX FILESYSTEM MAPPINGS
Run the following to fix your issue
sudo grub-install /dev/sda
sudo update-grub
That should fix your GRUB issues for you automatically with the default filesystems containing your various operating systems.
edited Nov 16 '18 at 12:41
Zanna
51.2k13139242
answered Nov 6 '18 at 8:25
Bakare EmmanuelBakare Emmanuel
263
You'd need a live disk running Ubuntu or any Linux variant.
After such, follow the commands here to mount the necessary drives and chroot into the directory.
For the CHROOT PROCESS
See this article
I've highlighted the commands you can use in the window below:
sudo mount -t ext4 /dev/sda6 /mnt/ubuntu
Confirm that sda6 is your current root partition.
sudo mount /dev/sda1 /mnt/ubuntu/boot
Check if this drive is your windows boot partition
Then follow up and mount the other required filesystems
sudo mount -t proc none /mnt/ubuntu/proc
sudo mount -o bind /dev /mnt/ubuntu/dev
sudo mount -o bind /sys /mnt/ubuntu/sys
Follow up to chroot here using this:
chroot /mnt/ubuntu /bin/bash
You should get into another window screen with a terminal window
COMMANDS TO FIX FILESYSTEM MAPPINGS
Run the following to fix your issue
sudo grub-install /dev/sda
sudo update-grub
That should fix your GRUB issues for you automatically with the default filesystems containing your various operating systems.
edited Nov 16 '18 at 12:41
Zanna
51.2k13139242
answered Nov 6 '18 at 8:25
Bakare EmmanuelBakare Emmanuel
263
edited Nov 16 '18 at 12:41
Zanna
51.2k13139242
edited Nov 16 '18 at 12:41
Zanna
51.2k13139242
edited Nov 16 '18 at 12:41
Zanna
51.2k13139242
51.2k13139242
answered Nov 6 '18 at 8:25
Bakare EmmanuelBakare Emmanuel
263
answered Nov 6 '18 at 8:25
Bakare EmmanuelBakare Emmanuel
263
answered Nov 6 '18 at 8:25
Bakare EmmanuelBakare Emmanuel
263
263
But if I want to get rid of Ubuntu and run windows only is there any easier method?
– Capatina Stefan
Nov 6 '18 at 10:34
You'd have to delete the Ubuntu partition and then restore the windows grub. Restoring it is optional as you could always continue with the linux one, if you're interested tho, it requires you have a windows bootable disk to get to the windows recovery option and reset your BCD configuration. More details here about how to do that after deleting the partition here: lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508
– Bakare Emmanuel
Nov 6 '18 at 14:56
What is the command for writing on this site “program language”?
– Capatina Stefan
Nov 7 '18 at 10:17
Sorry, could you expatiate on what you mean ---- "by writing on the site 'program language' " please
– Bakare Emmanuel
Nov 7 '18 at 13:05
How can i write with that font with grey background
– Capatina Stefan
Nov 7 '18 at 14:19
|
show 2 more comments
But if I want to get rid of Ubuntu and run windows only is there any easier method?
– Capatina Stefan
Nov 6 '18 at 10:34
You'd have to delete the Ubuntu partition and then restore the windows grub. Restoring it is optional as you could always continue with the linux one, if you're interested tho, it requires you have a windows bootable disk to get to the windows recovery option and reset your BCD configuration. More details here about how to do that after deleting the partition here: lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508
– Bakare Emmanuel
Nov 6 '18 at 14:56
What is the command for writing on this site “program language”?
– Capatina Stefan
Nov 7 '18 at 10:17
Sorry, could you expatiate on what you mean ---- "by writing on the site 'program language' " please
– Bakare Emmanuel
Nov 7 '18 at 13:05
How can i write with that font with grey background
– Capatina Stefan
Nov 7 '18 at 14:19
But if I want to get rid of Ubuntu and run windows only is there any easier method?
– Capatina Stefan
Nov 6 '18 at 10:34
But if I want to get rid of Ubuntu and run windows only is there any easier method?
– Capatina Stefan
Nov 6 '18 at 10:34
You'd have to delete the Ubuntu partition and then restore the windows grub. Restoring it is optional as you could always continue with the linux one, if you're interested tho, it requires you have a windows bootable disk to get to the windows recovery option and reset your BCD configuration. More details here about how to do that after deleting the partition here: lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508
– Bakare Emmanuel
Nov 6 '18 at 14:56
You'd have to delete the Ubuntu partition and then restore the windows grub. Restoring it is optional as you could always continue with the linux one, if you're interested tho, it requires you have a windows bootable disk to get to the windows recovery option and reset your BCD configuration. More details here about how to do that after deleting the partition here: lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508
– Bakare Emmanuel
Nov 6 '18 at 14:56
What is the command for writing on this site “program language”?
– Capatina Stefan
Nov 7 '18 at 10:17
What is the command for writing on this site “program language”?
– Capatina Stefan
Nov 7 '18 at 10:17
Sorry, could you expatiate on what you mean ---- "by writing on the site 'program language' " please
– Bakare Emmanuel
Nov 7 '18 at 13:05
Sorry, could you expatiate on what you mean ---- "by writing on the site 'program language' " please
– Bakare Emmanuel
Nov 7 '18 at 13:05
How can i write with that font with grey background
– Capatina Stefan
Nov 7 '18 at 14:19
How can i write with that font with grey background
– Capatina Stefan
Nov 7 '18 at 14:19
|
show 2 more comments
Thanks for contributing an answer to Ask Ubuntu!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1090423%2fhow-to-fix-error-unknown-filesystem-grub-rescue%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
3
Possible duplicate of Grub rescue - error: unknown filesystem
– karel
Nov 6 '18 at 8:09
1
You deleted the Ubuntu partition, so maybe what you want is How to remove Ubuntu and put Windows back on?
– Zanna
Nov 16 '18 at 12:46