Uninstall Linux Mint [SOLVED]

[Blake's7]

Hi! I redid my computer---completely wiping the hard drive. I set up a dual boot with Windows 7 Ultimate and Mint. However, I grabbed the wrong copy of Linux Mint---it was 4:40 in the morning. I installed Mint 18 32 bit, but I wanted to install Linux Mint 19 Xfce 64 bit. How can I uninstall the 18 32 bit so I can install the 19 64 bit? Any and all responses will be greatly appreciated. Thanks.

[sdibaja]

Install the new OS in the same partition(s) as the one you wish to replace.
Grub will update and only fine the systems currently on your drive.
--
another method: with your live installer running.use Gparted and delete the linux partitions... then run the installer and use that new free space.

[gm10]

Just install Mint 19 into the same partition (via the 'Something else' option) and you're good. It should look something like this:

as explained in the official installation guide: https://www.linuxmint.com/documentation.php

[JoeFootball]

How can I uninstall the 18 32 bit so I can install the 19 64 bit?

No uninstall needed. Just install over the existing LM deployment.

Joe

[Pierre]

that's it - - you Don't Uninstall an Operating System,
- you just OverWrite the Partition where the Old System resides.

[Blake's7]

Thanks for the responses. I( tried to install it, but when I got to installation type, I clicked on to highlight /dev/sda4 ext4, then clicked on install, and received a message to define root type from partition table. It had a - in front of message, so I clicked on the minus sign, and that partition got moved to top of table with no operating system defined. What am I supposed to do there? All the other buttons are greyed out.

[rui no onna]

Thanks for the responses. I( tried to install it, but when I got to installation type, I clicked on to highlight /dev/sda4 ext4, then clicked on install, and received a message to define root type from partition table. It had a - in front of message, so I clicked on the minus sign, and that partition got moved to top of table with no operating system defined. What am I supposed to do there? All the other buttons are greyed out.

With /dev/sda4 highlighted, you need to click on Change -> use as ext4 journaling file system -> select / as mount point.

[gm10]

With /dev/sda4 highlighted, you need to click on Change -> use as ext4 journaling file system -> select / as mount point.

OP: What he said. Just note that it may not be /dev/sda4 in your case. He means the partition your Mint 18 was/is on. Also check the box to format it. See the installation guide that I already linked you.

[Blake's7]

Thanks for the responses. It worked like a charm. Thanks.

[sdibaja]

Thanks for the responses. It worked like a charm. Thanks.

congrats!

to assist others with the same question: What method did you use?

PS: please edit the subject on your original post to include [solved] or some such, that helps for searching the multitude of posts here