rescue disk vs boot time scan

[REDACTED]

i created a rescue usb stick and ran the scanner including all disks and archive files. it did find a number of things which i deleted. i then rebooted with the rescue stick and ran it again and it came up "clean".

after i thought the pc was "clean", i installed the free version and then ran a boot time scan. the boot time scan found some more stuff.

do either one of the scanners really get everything?

[Pondus]

 you dont tell us what files/location that was detected, and what detection name avast gave
And there may be a difference in what areas they scan, and/or if compressed archives are unpacked .....

[REDACTED]

in the rescue disk i told it to scan all drives and to scan inside of archive files.

in the boot time scan i told it to scan all disks, set heuristics to highest value and scan inside of archive files and for pups.

so they should be scanning for the same things.