Did a clean install of 18.04 LTS Bionic Beaver 64-bit and the results were almost the same.
You should have run SeaTools first, why would you install to a damaged drive? Try to Repair the drive and see what the outcome is, if it's bad just get another drive.
Is this going to be your Main PC?
I'll do the texts and recomendations some day this week.
No need to hurry, just run SeaTools and see how that goes.
Right now I need to try saving a CPU, and my poor knowledge about installing, checking, enabling, desabling and preparing the BIOS for a USB install made me think I was reading some chinese dialect (what I read in Ubuntu forums).
Not sure what you mean here, I guess you are trying to Upgrade the CPU on this laptop? "saving a CPU"? The CPU can just be reinstalled and your done, if it is compatible...should be fine.
I guess you are talking about UEFI? hmm. Most computers have a Temporary Boot Option that you can use, but I'm not familiar with Toshiba. This way you don't have to go into the BIOS, but just choose the Temp Boot Options. That being said, I don't think this laptop is UEFI is it?
Here is the Toshiba Link and the directions to access the Temp Boot Screen on page 76, same as below.