If desired, check Scan all archives to scan compressed files (RAR, ZIP, etc).

Click Change to select the folders or discs to scan, then click Ok

Selected folders/discs: scans only specific folders or discs on the device.

All hard disks: scans the entire device.

Once Rescue Disk starts on the device, you can begin to scan for malware.

When the Boot Menu appears, select your CD containing Rescue Disk, which may be listed as CD-ROM Drive, CDROM, CD/DVD/CD-RW, or something similar.

Insert the CD containing Rescue Disk into the CD/DVD drive, then turn off your device.

When the Boot Menu appears, select your USB device containing Rescue Disk, which may be listed as Removable Devices, USB Flash Drive, USB Storage Device, or something similar.

Look for the text on the computer's BIOS boot splash screen for the proper key to access the Boot Menu. The commonly used keys are Esc, F12, or F11.

Because of the wide variety of PC and BIOS manufacturers, there are numerous ways to access the Boot Menu.As your device starts up, press the appropriate key to enter the Boot Menu.Turn off your device and insert the USB drive containing Rescue Disk into the USB port.Burn the Rescue Disk file onto a blank, recordable CDīooting Your Device from Rescue Disk USB Drive.When Rescue Disk is finished creating the ISO file, click Ok.Select a location to save the Rescue Disk ISO file, then click Save.Wait for the progress screen to show the Rescue Disk has been completed, then click Ok.Insert an empty USB drive into your device's USB port, then click Create USB.

Click Rescue Disk on the right side of the screen.Open the Avast Business Antivirus or Small Office Protection client UI.

Avast scan on boot