Ubuntu 16.04 installer does not detect Ubuntu 18.04 installation
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I want to downgrade from Ubuntu 18.04 back to Ubuntu 16.04. The installer does not recognize that I currently have Ubuntu 18.04 installed, and I don't want to lose my data. Any help is greatly appreciated.
Here I select "Something else"
![2]: https://i.stack.imgur.com/SuART.png
When sda selected, it does not detect root. Note: my disk is encrypted
![3]: https://i.stack.imgur.com/kmnQR.png
16.04 system-installation 18.04
asked May 10 at 1:31
Beh
63
add a comment |Â
up vote
1
down vote
favorite
I want to downgrade from Ubuntu 18.04 back to Ubuntu 16.04. The installer does not recognize that I currently have Ubuntu 18.04 installed, and I don't want to lose my data. Any help is greatly appreciated.
Here I select "Something else"
![2]: https://i.stack.imgur.com/SuART.png
When sda selected, it does not detect root. Note: my disk is encrypted
![3]: https://i.stack.imgur.com/kmnQR.png
16.04 system-installation 18.04
asked May 10 at 1:31
Beh
63
add a comment |Â
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I want to downgrade from Ubuntu 18.04 back to Ubuntu 16.04. The installer does not recognize that I currently have Ubuntu 18.04 installed, and I don't want to lose my data. Any help is greatly appreciated.
Here I select "Something else"
![2]: https://i.stack.imgur.com/SuART.png
When sda selected, it does not detect root. Note: my disk is encrypted
![3]: https://i.stack.imgur.com/kmnQR.png
16.04 system-installation 18.04
asked May 10 at 1:31
Beh
63
I want to downgrade from Ubuntu 18.04 back to Ubuntu 16.04. The installer does not recognize that I currently have Ubuntu 18.04 installed, and I don't want to lose my data. Any help is greatly appreciated.
Here I select "Something else"
![2]: https://i.stack.imgur.com/SuART.png
When sda selected, it does not detect root. Note: my disk is encrypted
![3]: https://i.stack.imgur.com/kmnQR.png
16.04 system-installation 18.04
asked May 10 at 1:31
Beh
63
edited May 10 at 12:07
asked May 10 at 1:31
Beh
63
asked May 10 at 1:31
Beh
63
asked May 10 at 1:31
Beh
63
63
add a comment |Â
add a comment |Â
1 Answer
1
active
oldest
votes
up vote
1
down vote
You can install 16.04 (or any other Ubuntu version) over your current installation. It won't interfere with your personal data. As long as you don't specify format the partition, it'll just delete system directories that your specified version uses.
It'll also inform you of this with this message:
The file system on /dev/sdXY assigned to / has not been marked for
formatting. Directories containing system files
(/etc,/lib,/usr,/var,...) that already exist under any defined
mountpoint will be deleted during the install.
Those directories will not have your data in them. Your home folder will not be touched. Also some local system areas such as /usr/local/... and /opt will not be touched.
There's a chance that some of the configuration files in your /home directory might cause some errors when you log in. You'll have to manually fix those. I usually do it by creating a new user when performing this type of install. Then I login between the two users, while I fix the applications or configurations that causes errors.
answered May 10 at 2:01
L. D. James
17.4k43178
Thanks L.D. Should I select "Do something else" and then a specific sda to follow your instructions or do I choose the install option which warns me I will lose all data on the disk? Please see the image link I added to the main post.
– Beh
May 10 at 2:07
Your image is showing that you have selected erase the entire disk. You will lose everything if you choose that option. You would have to click the bottom option that says Something Else. That is the option that allows you to choose where to install Ubuntu. That is the option that will only delete the system folders as long as you don't checkmark Format the partition.
– L. D. James
May 10 at 3:33
When selected Something Else and leaving Format the partition unchecked, I receive a warning that no root file system is selected. What do I do from here? Please note my disk is encrypted, if that makes a difference in this situation.
– Beh
May 10 at 12:08
The encryption doesn't make any difference. You have to how you will be using the partition. Click on theChangepartition near the bottom of the window and specify/. That is telling the installer your selection for therootpartition`.
– L. D. James
May 10 at 13:39
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
You can install 16.04 (or any other Ubuntu version) over your current installation. It won't interfere with your personal data. As long as you don't specify format the partition, it'll just delete system directories that your specified version uses.
It'll also inform you of this with this message:
The file system on /dev/sdXY assigned to / has not been marked for
formatting. Directories containing system files
(/etc,/lib,/usr,/var,...) that already exist under any defined
mountpoint will be deleted during the install.
Those directories will not have your data in them. Your home folder will not be touched. Also some local system areas such as /usr/local/... and /opt will not be touched.
There's a chance that some of the configuration files in your /home directory might cause some errors when you log in. You'll have to manually fix those. I usually do it by creating a new user when performing this type of install. Then I login between the two users, while I fix the applications or configurations that causes errors.
answered May 10 at 2:01
L. D. James
17.4k43178
Thanks L.D. Should I select "Do something else" and then a specific sda to follow your instructions or do I choose the install option which warns me I will lose all data on the disk? Please see the image link I added to the main post.
– Beh
May 10 at 2:07
Your image is showing that you have selected erase the entire disk. You will lose everything if you choose that option. You would have to click the bottom option that says Something Else. That is the option that allows you to choose where to install Ubuntu. That is the option that will only delete the system folders as long as you don't checkmark Format the partition.
– L. D. James
May 10 at 3:33
When selected Something Else and leaving Format the partition unchecked, I receive a warning that no root file system is selected. What do I do from here? Please note my disk is encrypted, if that makes a difference in this situation.
– Beh
May 10 at 12:08
The encryption doesn't make any difference. You have to how you will be using the partition. Click on theChangepartition near the bottom of the window and specify/. That is telling the installer your selection for therootpartition`.
– L. D. James
May 10 at 13:39
add a comment |Â
up vote
1
down vote
You can install 16.04 (or any other Ubuntu version) over your current installation. It won't interfere with your personal data. As long as you don't specify format the partition, it'll just delete system directories that your specified version uses.
It'll also inform you of this with this message:
The file system on /dev/sdXY assigned to / has not been marked for
formatting. Directories containing system files
(/etc,/lib,/usr,/var,...) that already exist under any defined
mountpoint will be deleted during the install.
Those directories will not have your data in them. Your home folder will not be touched. Also some local system areas such as /usr/local/... and /opt will not be touched.
There's a chance that some of the configuration files in your /home directory might cause some errors when you log in. You'll have to manually fix those. I usually do it by creating a new user when performing this type of install. Then I login between the two users, while I fix the applications or configurations that causes errors.
answered May 10 at 2:01
L. D. James
17.4k43178
Thanks L.D. Should I select "Do something else" and then a specific sda to follow your instructions or do I choose the install option which warns me I will lose all data on the disk? Please see the image link I added to the main post.
– Beh
May 10 at 2:07
Your image is showing that you have selected erase the entire disk. You will lose everything if you choose that option. You would have to click the bottom option that says Something Else. That is the option that allows you to choose where to install Ubuntu. That is the option that will only delete the system folders as long as you don't checkmark Format the partition.
– L. D. James
May 10 at 3:33
When selected Something Else and leaving Format the partition unchecked, I receive a warning that no root file system is selected. What do I do from here? Please note my disk is encrypted, if that makes a difference in this situation.
– Beh
May 10 at 12:08
The encryption doesn't make any difference. You have to how you will be using the partition. Click on theChangepartition near the bottom of the window and specify/. That is telling the installer your selection for therootpartition`.
– L. D. James
May 10 at 13:39
add a comment |Â
up vote
1
down vote
up vote
1
down vote
You can install 16.04 (or any other Ubuntu version) over your current installation. It won't interfere with your personal data. As long as you don't specify format the partition, it'll just delete system directories that your specified version uses.
It'll also inform you of this with this message:
The file system on /dev/sdXY assigned to / has not been marked for
formatting. Directories containing system files
(/etc,/lib,/usr,/var,...) that already exist under any defined
mountpoint will be deleted during the install.
Those directories will not have your data in them. Your home folder will not be touched. Also some local system areas such as /usr/local/... and /opt will not be touched.
There's a chance that some of the configuration files in your /home directory might cause some errors when you log in. You'll have to manually fix those. I usually do it by creating a new user when performing this type of install. Then I login between the two users, while I fix the applications or configurations that causes errors.
answered May 10 at 2:01
L. D. James
17.4k43178
You can install 16.04 (or any other Ubuntu version) over your current installation. It won't interfere with your personal data. As long as you don't specify format the partition, it'll just delete system directories that your specified version uses.
It'll also inform you of this with this message:
The file system on /dev/sdXY assigned to / has not been marked for
formatting. Directories containing system files
(/etc,/lib,/usr,/var,...) that already exist under any defined
mountpoint will be deleted during the install.
Those directories will not have your data in them. Your home folder will not be touched. Also some local system areas such as /usr/local/... and /opt will not be touched.
There's a chance that some of the configuration files in your /home directory might cause some errors when you log in. You'll have to manually fix those. I usually do it by creating a new user when performing this type of install. Then I login between the two users, while I fix the applications or configurations that causes errors.
answered May 10 at 2:01
L. D. James
17.4k43178
answered May 10 at 2:01
L. D. James
17.4k43178
answered May 10 at 2:01
L. D. James
17.4k43178
answered May 10 at 2:01
L. D. James
17.4k43178
17.4k43178
Thanks L.D. Should I select "Do something else" and then a specific sda to follow your instructions or do I choose the install option which warns me I will lose all data on the disk? Please see the image link I added to the main post.
– Beh
May 10 at 2:07
Your image is showing that you have selected erase the entire disk. You will lose everything if you choose that option. You would have to click the bottom option that says Something Else. That is the option that allows you to choose where to install Ubuntu. That is the option that will only delete the system folders as long as you don't checkmark Format the partition.
– L. D. James
May 10 at 3:33
When selected Something Else and leaving Format the partition unchecked, I receive a warning that no root file system is selected. What do I do from here? Please note my disk is encrypted, if that makes a difference in this situation.
– Beh
May 10 at 12:08
The encryption doesn't make any difference. You have to how you will be using the partition. Click on theChangepartition near the bottom of the window and specify/. That is telling the installer your selection for therootpartition`.
– L. D. James
May 10 at 13:39
add a comment |Â
Thanks L.D. Should I select "Do something else" and then a specific sda to follow your instructions or do I choose the install option which warns me I will lose all data on the disk? Please see the image link I added to the main post.
– Beh
May 10 at 2:07
Your image is showing that you have selected erase the entire disk. You will lose everything if you choose that option. You would have to click the bottom option that says Something Else. That is the option that allows you to choose where to install Ubuntu. That is the option that will only delete the system folders as long as you don't checkmark Format the partition.
– L. D. James
May 10 at 3:33
When selected Something Else and leaving Format the partition unchecked, I receive a warning that no root file system is selected. What do I do from here? Please note my disk is encrypted, if that makes a difference in this situation.
– Beh
May 10 at 12:08
The encryption doesn't make any difference. You have to how you will be using the partition. Click on theChangepartition near the bottom of the window and specify/. That is telling the installer your selection for therootpartition`.
– L. D. James
May 10 at 13:39
Thanks L.D. Should I select "Do something else" and then a specific sda to follow your instructions or do I choose the install option which warns me I will lose all data on the disk? Please see the image link I added to the main post.
– Beh
May 10 at 2:07
Thanks L.D. Should I select "Do something else" and then a specific sda to follow your instructions or do I choose the install option which warns me I will lose all data on the disk? Please see the image link I added to the main post.
– Beh
May 10 at 2:07
Your image is showing that you have selected erase the entire disk. You will lose everything if you choose that option. You would have to click the bottom option that says Something Else. That is the option that allows you to choose where to install Ubuntu. That is the option that will only delete the system folders as long as you don't checkmark Format the partition.
– L. D. James
May 10 at 3:33
Your image is showing that you have selected erase the entire disk. You will lose everything if you choose that option. You would have to click the bottom option that says Something Else. That is the option that allows you to choose where to install Ubuntu. That is the option that will only delete the system folders as long as you don't checkmark Format the partition.
– L. D. James
May 10 at 3:33
When selected Something Else and leaving Format the partition unchecked, I receive a warning that no root file system is selected. What do I do from here? Please note my disk is encrypted, if that makes a difference in this situation.
– Beh
May 10 at 12:08
When selected Something Else and leaving Format the partition unchecked, I receive a warning that no root file system is selected. What do I do from here? Please note my disk is encrypted, if that makes a difference in this situation.
– Beh
May 10 at 12:08
The encryption doesn't make any difference. You have to how you will be using the partition. Click on the
Change partition near the bottom of the window and specify /. That is telling the installer your selection for the root partition`.– L. D. James
May 10 at 13:39
The encryption doesn't make any difference. You have to how you will be using the partition. Click on the
Change partition near the bottom of the window and specify /. That is telling the installer your selection for the root partition`.– L. D. James
May 10 at 13:39
add a comment |Â
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