Install Ubuntu 16 LTS on existing media - DELETE EVERYTHING

[graystrickland]

Surely something obvious escapes my grasp, because it shouldn't (seem to) be this difficult.

GOAL: install Ubuntu 16.04 LTS on existing media (which has had two previous Ubuntu installations) and blow up (delete) all pre-existing partitions in the process.

PROBLEM: When I try to install Ubuntu and get to the Installation Type screen:

https://i.stack.imgur.com/KURnS.png


and select (1) Erase all... and (2) Use LVM... and (3) Something Else then I get this:

http://i94.photobucket.com/albums/l100/graystrickland/IMG_20171124_155003_zpshqre1qrl.jpg

When I try to create a new partition table for /dev/sda, then I get the error No modifications can be made to the partition #5 of device SCSI1 (0,0,0) of (sda) for the following reasons: In use by LVM group ubuntu-vg.

http://i94.photobucket.com/albums/l100/graystrickland/IMG_20171124_155022_zpsm7uzonlr.jpg

I just want to BLOW UP EVERYTHING (and install Ubuntu 16.04 LTS).

There is *nothing* on this computer that I need or want to save.

How can I just do a destructive installation that deletes all existing partitions, creates any required (new) partitions and installs the new operating system?

[ian-weisser]

I'm confused.
If you want to erase your disk, why aren't you choosing "Erase disk and install Ubuntu"?

You must use LVM tools to modify LVM partitions. Non-LVM tools, as you have discovered, don't work.

[graystrickland]

Your patience is greatly appreciated.

Upon reading your reply, I realize that I'm an idiot.

I thought that I was selecting (1) to erase everything AND (2) use LVM in the new installation.

By just selecting "erase disk..." I was able to get what I wanted.

Thank you for your patience.

[wildmanne39]

Please use thumbnails or url's when posting images because many people have slow or limited connections.

[ian-weisser]

I'm glad you got it sorted.

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