Many thanks to all who worked very hard to repair and test patch that addressed the problem of CHKDSK not working on boot (Win7/Pro x64) and for doing it in record time.
I will try to remember all the things this confusing experience taught me in the process.
Boot time scan is missing in the virus scan section in the latest version of Avast Premier.
I’ve already done the Avast repair, nothing, no boot time scan and I’ve done a clean installed, same issue no boot time scan showing up in the virus scan section.
Did Avast removed boot time scan in the latest Avast version ??
Nope, I got it from the support package.
Somewhen in the past, there probably has been some kind of crash during which the main INI file got corrupted. Overseer has fixed it (otherwise the program would hardly work), but one particular value was fixed incorrectly (because its correct value has changed between Avast v18 and v19) and the result is you don’t see the boot-time scan in the UI.
I’ll update it in one of the next virus definition updates.