I'm rewriting a recent post that I just deleted due to an incorrect approach to the issue.
I had some problems with another OS and deleted all partitions. The disk is comprised entirely of unallocated space, unpartitioned, blank. Now booting Ubuntu Budgie via live USB, it immediately says through a notification that "a hard disk is likely to fail soon".
Now, is there any method to try and repair it? I only count with a 8GB flash drive. Boot is fine, nothing wrong. The laptop is fine. I have no reason to think HDD is damaged besides the fact that there were approximately 40 threats found in that OS via an antivirus scan.
I got an Ubuntu Budgie 18.04 live USB and tested it prior to installation. Ran a SMART test through Drives utility and got this:
Now I'm sure you are going to say it's pretty dead with that "Reallocated Sector Count" at 15712 which is more than 300x the "worst" case, if the test was done properly and I'm interpreting it with common sense. However, other people get around 100-200 Sectors instead of 15000. This is pretty much solved. I'm curious however to understand how could such an astronomical value develop in 9 months of usage full time. There is another drive with years of usage in my house.
Now I'm going to replace it with another one from a laptop around the house. Meanwhile the Ubuntu live USB is the only way to at least browse the internet.