After I “fixed all viruses automatically” with the regular full-system scan, there was a menu that was inquiring my permission to shut down my computer and run a boot scan. After I agreed on it, the boot scan runs and finds the same virus that was already been fixed while on the initial scan. I thought the first scan already did the job to fix the virus. What’s happening??
What file(s) was detected and what malware name was given by avast?
What location does the detected file(s) have … full file path
You may post screenshots
Oops, sorry. After looking at the chest, the viruses from full-system scan had similar names with the viruses founded by the boot scan.
Regardless, how come there are more viruses founded on the second boot scan than the full-system scan? Because if the detection parameters are different for the two scans, “full-system” wording is bit off to me in my opinion.
Now I think what full-system scan actually is as it offers the “package” of regular scan and boot scan later. However, those two types seems to be distinguished as there is an independent option to only boot scan. So, originally, I thought the full-system scan was only the first bit, excluding the boot scan. Besides, “full-system” itself seems to imply that the Avast will find any viruses at its maximum ability including viruses that can only be disclosed during booting in the perspective of a nonprofessional user about computer viruses.
Anyhow, I may have misunderstood what the full-system scan was, or correct me if I’m wrong please.
The full system scan, doesn’t include a boot-time scan. The boot-time scan is a special scan that has to be initiated by the user or if offered by avast after a detection on the system.
The Scan Areas in the scans Settings it quite clear what it scans, see attached image (click to expand).
quick scan will scan all areas that activly running malware is using
full scan will also scan areas where files are stored/not activly running files
Depending on what malware that is detected, avast may suggest to run BootScan to ensure removal
Avast 2015: Scheduling a Boot-time scan https://www.avast.com/en-eu/faq.php?article=AVKB132#artTitle
Please be advised, that the Boot-time scan is an advanced and purposeful feature designed to be used only when there’s something bad going on the system, and usually takes some time before it finishes. That's why it cannot be scheduled to run every time the computer starts, but as needed only.