How to install Ubuntu 18.04.* in a single partition on a dual boot with Windows 10?

Ubuntu 18.04.4
Windows 10 Home

I decided to clean up the HD, and reinstall Windows and Ubuntu as dual boot, this time giving the bare minimum to Win and the rest to Ubu. I've installed Win and here is the disc so far:

Before I began again, Ubuntu was formerly in sda5. I booted Live USB 18.04.4 and got to here:

I chose the easy option and was confronted with the choice to mutually resize sda5 (Files) and a new partition sda6 for Ubuntu:
What on earth is Files for? Why can't everything just be thrown into sda5 without an sda6? How big should I make Files? I want swap, /home, and root / to all be in one partition. Isn't there now a swap file? And I don't want a separate partition for /home because if I set its size wrongly it will have to be resized in a trade-off with / some time in the future.

I backed up and tried Something Else, which introduced me to a world of terror:Selecting /dev/sda and clicking New Partition Table invited me to wipe my HD clean and install new partitions, not what was wanted at all. Selecting /dev/sda5 did not give me any new options to try.

My previous adventures in making a dual boot were uneventful. But this Files/Ubuntu partitioning has stumped me. Answers very welcome!

3

1 Answer

I think You should go with 'Something else' option in Installation Type Menu(Your 2nd image) and then resize partitions according to your convenience.

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