Can't Unmount dev/sda3 (boot device)

Please help a frustrated user.

I currently run only ubuntu 12.04: I cant seem to umount. I think the umount folder is lost. Tried all possible measures to no avail. Is there a way to force umount. I've been stuck with this umount issues for days now.
I've already applied these but no luck:
sudo umount /dev/sda3
I have equally tried umounting using gparted as well as utility :(

asked Dec 4 '13 at 5:53

easynhappy

112

bumped to the homepage by Community♦ yesterday

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

upload gparted screenshot.And what was the output of sudo umount /dev/sda3?

– Avinash Raj
Dec 4 '13 at 5:54

Try sudo umount -l /mnt, or sudo umount -f /mnt

– Mitch♦
Dec 4 '13 at 6:02

i tried uploading screen shots but appears i will need at least 10 reputations to do that. Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:08

upload the screenshot to imgur.com and post the link here.

– Avinash Raj
Dec 4 '13 at 6:09

Here is the link to the screen shot imgur.com/edit

– easynhappy
Dec 4 '13 at 6:13

|
show 1 more comment

Please help a frustrated user.

asked Dec 4 '13 at 5:53

easynhappy

112

bumped to the homepage by Community♦ yesterday

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

upload gparted screenshot.And what was the output of sudo umount /dev/sda3?

– Avinash Raj
Dec 4 '13 at 5:54

Try sudo umount -l /mnt, or sudo umount -f /mnt

– Mitch♦
Dec 4 '13 at 6:02

i tried uploading screen shots but appears i will need at least 10 reputations to do that. Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:08

upload the screenshot to imgur.com and post the link here.

– Avinash Raj
Dec 4 '13 at 6:09

Here is the link to the screen shot imgur.com/edit

– easynhappy
Dec 4 '13 at 6:13

|
show 1 more comment

Please help a frustrated user.

asked Dec 4 '13 at 5:53

easynhappy

112

Please help a frustrated user.

12.04 boot drivers partitioning umount

asked Dec 4 '13 at 5:53

easynhappy

112

asked Dec 4 '13 at 5:53

easynhappy

112

asked Dec 4 '13 at 5:53

easynhappy

112

asked Dec 4 '13 at 5:53

easynhappy

112

asked Dec 4 '13 at 5:53

easynhappy

112

bumped to the homepage by Community♦ yesterday

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♦ yesterday

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

upload gparted screenshot.And what was the output of sudo umount /dev/sda3?

– Avinash Raj
Dec 4 '13 at 5:54

Try sudo umount -l /mnt, or sudo umount -f /mnt

– Mitch♦
Dec 4 '13 at 6:02

i tried uploading screen shots but appears i will need at least 10 reputations to do that. Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:08

upload the screenshot to imgur.com and post the link here.

– Avinash Raj
Dec 4 '13 at 6:09

Here is the link to the screen shot imgur.com/edit

– easynhappy
Dec 4 '13 at 6:13

|
show 1 more comment

upload gparted screenshot.And what was the output of sudo umount /dev/sda3?

– Avinash Raj
Dec 4 '13 at 5:54

Try sudo umount -l /mnt, or sudo umount -f /mnt

– Mitch♦
Dec 4 '13 at 6:02

i tried uploading screen shots but appears i will need at least 10 reputations to do that. Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:08

upload the screenshot to imgur.com and post the link here.

– Avinash Raj
Dec 4 '13 at 6:09

Here is the link to the screen shot imgur.com/edit

– easynhappy
Dec 4 '13 at 6:13

upload gparted screenshot.And what was the output of sudo umount /dev/sda3?

– Avinash Raj
Dec 4 '13 at 5:54

Try sudo umount -l /mnt, or sudo umount -f /mnt

– Mitch♦
Dec 4 '13 at 6:02

i tried uploading screen shots but appears i will need at least 10 reputations to do that. Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:08

upload the screenshot to imgur.com and post the link here.

– Avinash Raj
Dec 4 '13 at 6:09

Here is the link to the screen shot imgur.com/edit

– easynhappy
Dec 4 '13 at 6:13

|
show 1 more comment

2 Answers
2

active

oldest

votes

You can't able to unmount a partition which has mount point as /.Because your running ubuntu partition was mounted at /.

answered Dec 4 '13 at 6:15

Avinash Raj

51.8k41168218

So what do i do about this? I'm stuck.

– easynhappy
Dec 4 '13 at 6:27

plz post the screenshot link.

– Avinash Raj
Dec 4 '13 at 6:29

imgur.com/edit

– easynhappy
Dec 4 '13 at 6:37

i can't open it.Did you can?

– Avinash Raj
Dec 4 '13 at 6:37

Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:53

|
show 1 more comment

You can also try as root.

Step #1:
In terminal type:

sudo -i

Step #2:
In terminal type:

umount /dev/sda3

Sources:
https://help.ubuntu.com/community/RootSudo

edited Dec 4 '13 at 6:17

Avinash Raj

51.8k41168218

answered Dec 4 '13 at 6:06

metroandgnome3arebrothers

534

you are posting an invalid image link. right click on the image after uploading and choose "copy image location", then post that url here. I'm assuming you are using firefox, if not the steps will be slightly different.

– metroandgnome3arebrothers
Dec 4 '13 at 6:41

I did but unfortunately, there is no option as 'copy image location'. Howerever everything that is in seen on the image can be summarized as: Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:50

have you tried the above "sudo -i", "umount /dev/sda3" it has more power than sudo, it also works well with the suggestion from Mitch eg "sudo -i" "umount -l /dev/sda3".

– metroandgnome3arebrothers
Dec 4 '13 at 6:55

the screenshow would be nice in order to see what paritions you have and which others are mounted.

– metroandgnome3arebrothers
Dec 4 '13 at 6:55

Yes! i tried "sudo -i" "umount -l /sda3". But it says device is busy. Unfortunately, am not yet able to post screen shots here untill i get upto 10 reputations.

– easynhappy
Dec 4 '13 at 7:01

|
show 5 more comments

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

You can't able to unmount a partition which has mount point as /.Because your running ubuntu partition was mounted at /.

answered Dec 4 '13 at 6:15

Avinash Raj

51.8k41168218

So what do i do about this? I'm stuck.

– easynhappy
Dec 4 '13 at 6:27

plz post the screenshot link.

– Avinash Raj
Dec 4 '13 at 6:29

imgur.com/edit

– easynhappy
Dec 4 '13 at 6:37

i can't open it.Did you can?

– Avinash Raj
Dec 4 '13 at 6:37

Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:53

|
show 1 more comment

You can't able to unmount a partition which has mount point as /.Because your running ubuntu partition was mounted at /.

answered Dec 4 '13 at 6:15

Avinash Raj

51.8k41168218

So what do i do about this? I'm stuck.

– easynhappy
Dec 4 '13 at 6:27

plz post the screenshot link.

– Avinash Raj
Dec 4 '13 at 6:29

imgur.com/edit

– easynhappy
Dec 4 '13 at 6:37

i can't open it.Did you can?

– Avinash Raj
Dec 4 '13 at 6:37

Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:53

|
show 1 more comment

You can't able to unmount a partition which has mount point as /.Because your running ubuntu partition was mounted at /.

answered Dec 4 '13 at 6:15

Avinash Raj

51.8k41168218

You can't able to unmount a partition which has mount point as /.Because your running ubuntu partition was mounted at /.

answered Dec 4 '13 at 6:15

Avinash Raj

51.8k41168218

answered Dec 4 '13 at 6:15

Avinash Raj

51.8k41168218

answered Dec 4 '13 at 6:15

Avinash Raj

51.8k41168218

answered Dec 4 '13 at 6:15

Avinash Raj

51.8k41168218

So what do i do about this? I'm stuck.

– easynhappy
Dec 4 '13 at 6:27

plz post the screenshot link.

– Avinash Raj
Dec 4 '13 at 6:29

imgur.com/edit

– easynhappy
Dec 4 '13 at 6:37

i can't open it.Did you can?

– Avinash Raj
Dec 4 '13 at 6:37

Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:53

|
show 1 more comment

So what do i do about this? I'm stuck.

– easynhappy
Dec 4 '13 at 6:27

plz post the screenshot link.

– Avinash Raj
Dec 4 '13 at 6:29

imgur.com/edit

– easynhappy
Dec 4 '13 at 6:37

i can't open it.Did you can?

– Avinash Raj
Dec 4 '13 at 6:37

Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:53

So what do i do about this? I'm stuck.

– easynhappy
Dec 4 '13 at 6:27

plz post the screenshot link.

– Avinash Raj
Dec 4 '13 at 6:29

imgur.com/edit

– easynhappy
Dec 4 '13 at 6:37

i can't open it.Did you can?

– Avinash Raj
Dec 4 '13 at 6:37

Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:53

|
show 1 more comment

You can also try as root.

Step #1:
In terminal type:

sudo -i

Step #2:
In terminal type:

umount /dev/sda3

Sources:
https://help.ubuntu.com/community/RootSudo

edited Dec 4 '13 at 6:17

Avinash Raj

51.8k41168218

answered Dec 4 '13 at 6:06

metroandgnome3arebrothers

534

you are posting an invalid image link. right click on the image after uploading and choose "copy image location", then post that url here. I'm assuming you are using firefox, if not the steps will be slightly different.

– metroandgnome3arebrothers
Dec 4 '13 at 6:41

I did but unfortunately, there is no option as 'copy image location'. Howerever everything that is in seen on the image can be summarized as: Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:50

have you tried the above "sudo -i", "umount /dev/sda3" it has more power than sudo, it also works well with the suggestion from Mitch eg "sudo -i" "umount -l /dev/sda3".

– metroandgnome3arebrothers
Dec 4 '13 at 6:55

the screenshow would be nice in order to see what paritions you have and which others are mounted.

– metroandgnome3arebrothers
Dec 4 '13 at 6:55

Yes! i tried "sudo -i" "umount -l /sda3". But it says device is busy. Unfortunately, am not yet able to post screen shots here untill i get upto 10 reputations.

– easynhappy
Dec 4 '13 at 7:01

|
show 5 more comments

You can also try as root.

Step #1:
In terminal type:

sudo -i

Step #2:
In terminal type:

umount /dev/sda3

Sources:
https://help.ubuntu.com/community/RootSudo

edited Dec 4 '13 at 6:17

Avinash Raj

51.8k41168218

answered Dec 4 '13 at 6:06

metroandgnome3arebrothers

534

you are posting an invalid image link. right click on the image after uploading and choose "copy image location", then post that url here. I'm assuming you are using firefox, if not the steps will be slightly different.

– metroandgnome3arebrothers
Dec 4 '13 at 6:41

I did but unfortunately, there is no option as 'copy image location'. Howerever everything that is in seen on the image can be summarized as: Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:50

have you tried the above "sudo -i", "umount /dev/sda3" it has more power than sudo, it also works well with the suggestion from Mitch eg "sudo -i" "umount -l /dev/sda3".

– metroandgnome3arebrothers
Dec 4 '13 at 6:55

the screenshow would be nice in order to see what paritions you have and which others are mounted.

– metroandgnome3arebrothers
Dec 4 '13 at 6:55

Yes! i tried "sudo -i" "umount -l /sda3". But it says device is busy. Unfortunately, am not yet able to post screen shots here untill i get upto 10 reputations.

– easynhappy
Dec 4 '13 at 7:01

|
show 5 more comments

You can also try as root.

Step #1:
In terminal type:

sudo -i

Step #2:
In terminal type:

umount /dev/sda3

Sources:
https://help.ubuntu.com/community/RootSudo

edited Dec 4 '13 at 6:17

Avinash Raj

51.8k41168218

answered Dec 4 '13 at 6:06

metroandgnome3arebrothers

534

You can also try as root.

Step #1:
In terminal type:

sudo -i

Step #2:
In terminal type:

umount /dev/sda3

Sources:
https://help.ubuntu.com/community/RootSudo

edited Dec 4 '13 at 6:17

Avinash Raj

51.8k41168218

answered Dec 4 '13 at 6:06

metroandgnome3arebrothers

534

edited Dec 4 '13 at 6:17

Avinash Raj

51.8k41168218

edited Dec 4 '13 at 6:17

Avinash Raj

51.8k41168218

edited Dec 4 '13 at 6:17

Avinash Raj

51.8k41168218

answered Dec 4 '13 at 6:06

metroandgnome3arebrothers

534

answered Dec 4 '13 at 6:06

metroandgnome3arebrothers

534

answered Dec 4 '13 at 6:06

metroandgnome3arebrothers

534

you are posting an invalid image link. right click on the image after uploading and choose "copy image location", then post that url here. I'm assuming you are using firefox, if not the steps will be slightly different.

– metroandgnome3arebrothers
Dec 4 '13 at 6:41

I did but unfortunately, there is no option as 'copy image location'. Howerever everything that is in seen on the image can be summarized as: Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:50

have you tried the above "sudo -i", "umount /dev/sda3" it has more power than sudo, it also works well with the suggestion from Mitch eg "sudo -i" "umount -l /dev/sda3".

– metroandgnome3arebrothers
Dec 4 '13 at 6:55

the screenshow would be nice in order to see what paritions you have and which others are mounted.

– metroandgnome3arebrothers
Dec 4 '13 at 6:55

Yes! i tried "sudo -i" "umount -l /sda3". But it says device is busy. Unfortunately, am not yet able to post screen shots here untill i get upto 10 reputations.

– easynhappy
Dec 4 '13 at 7:01

|
show 5 more comments

you are posting an invalid image link. right click on the image after uploading and choose "copy image location", then post that url here. I'm assuming you are using firefox, if not the steps will be slightly different.

– metroandgnome3arebrothers
Dec 4 '13 at 6:41

I did but unfortunately, there is no option as 'copy image location'. Howerever everything that is in seen on the image can be summarized as: Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:50

have you tried the above "sudo -i", "umount /dev/sda3" it has more power than sudo, it also works well with the suggestion from Mitch eg "sudo -i" "umount -l /dev/sda3".

– metroandgnome3arebrothers
Dec 4 '13 at 6:55

the screenshow would be nice in order to see what paritions you have and which others are mounted.

– metroandgnome3arebrothers
Dec 4 '13 at 6:55

Yes! i tried "sudo -i" "umount -l /sda3". But it says device is busy. Unfortunately, am not yet able to post screen shots here untill i get upto 10 reputations.

– easynhappy
Dec 4 '13 at 7:01

you are posting an invalid image link. right click on the image after uploading and choose "copy image location", then post that url here. I'm assuming you are using firefox, if not the steps will be slightly different.

– metroandgnome3arebrothers
Dec 4 '13 at 6:41

I did but unfortunately, there is no option as 'copy image location'. Howerever everything that is in seen on the image can be summarized as: Gparted says: "the partition cannot be unmounted from the followeing mount points / Most likely, other partitions are also mounted on this mount points. You are advised to unmount them manually" When i used sudo umount /dev/sda3 it said " device is busy.

– easynhappy
Dec 4 '13 at 6:50

have you tried the above "sudo -i", "umount /dev/sda3" it has more power than sudo, it also works well with the suggestion from Mitch eg "sudo -i" "umount -l /dev/sda3".

– metroandgnome3arebrothers
Dec 4 '13 at 6:55

the screenshow would be nice in order to see what paritions you have and which others are mounted.

– metroandgnome3arebrothers
Dec 4 '13 at 6:55

Yes! i tried "sudo -i" "umount -l /sda3". But it says device is busy. Unfortunately, am not yet able to post screen shots here untill i get upto 10 reputations.

– easynhappy
Dec 4 '13 at 7:01

|
show 5 more comments

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