DavidR
3
Do you mean run an AV scan with another AV scanner ?
Do you mean an avast on-demand scan, that you initiate or something else ?
If so, right click the avast icon, select Start avast! Antivirus, there will be a memory scan first when this is complete the Simple User Interface will be displayed. Here you can select Local Drives (all hard disks), Folder Selection (limited folder or partitions 'c:'), don’t select this in conjunction with the Local drives as will duplicate the scan or Removable Media (CD, DVD, Floppy, etc.).