Avast Antivirus: Creating and using Avast Rescue Disk
How to create and use Avast Rescue Disk
If you suspect your PC is infected with malware and all other Antivirus scans (including the Boot-time scan) were unable to resolve the issue, you can use Rescue Disk. Rescue Disk enables you to scan your PC when your system is not running. This method significantly increases your chances of detecting and removing malware because the malware is unable to counteract.
Refer to the following sections for instructions on using Rescue Disk:
On Windows Vista or Windows XP use any third-party burning program capable of writing CD images in ISO file format.
Boot up your PC from Rescue Disk
After creating a Rescue Disk, you can boot up the PC that contains malware using the external USB (Preferred method) or CD (Alternative method) drive.
To boot from Rescue Disk on a USB drive, follow these steps:
To boot from Rescue Disk on a CD, follow these steps:
Turn off your PC and insert the USB drive containing Rescue Disk into the USB port.
Insert the CD containing Rescue Disk into the CD/DVD drive of your PC, then turn your PC off.
Turn on the PC to be scanned. As your PC starts up, press the appropriate key to enter the Boot Menu.
Look for text on the computer's BIOS boot splash screen (usually a computer manufacturer's logo and/or hardware initialization details, shown for a few seconds before Windows starts) that tells you how to access the Boot menu.
Because of the wide variety of PC and BIOS manufacturers, there are numerous ways to access the Boot Menu. The keys that are commonly used are Esc, F12 or F11. Some PC models or manufacturers also use other keys such as F10, F9, F8 or F5.
Once you determine the proper key to access the Boot Menu, restart the PC again and immediately start tapping that key.
When the Boot Menu appears, select your USB device containing Rescue Disk. It may be listed as Removable Devices, USB Flash Drive, USB Storage Device or similar (sometimes listed on a sub-menu with the other storage drives.)
When the Boot Menu appears, select your CD containing Rescue Disk. It may be listed as CD-ROM Drive, CDROM, CD/DVD/CD-RW... or similar (sometimes listed on a sub-menu with the other storage drives.)
Following the instructions in the message that appears, press any key to start Rescue Disk.
If you cannot access the Boot Menu, refer to your PC's documentation on the relevant manufacturer's website, or try to contact the manufacturer's support.
Scan your PC for viruses
When Rescue Disk starts on your PC, you can begin to scan for malware.
Select an option:
All hard discs: scans the entire PC.
Selected folders/discs: scans only specific folders or discs on the PC. Click Change to select the folders or discs to scan, then click OK.
Tick Scan all archives to scan compressed files (RAR, ZIP, etc).
Click Start scan.
When the scan is finished, review the scan report and results screen for any found threats.
Repair or delete infected files
After scanning your PC, Rescue Disk notifies you of the results. If any threats are found, you can select Fix automatically (Preferred method) or Do it manually (Alternative method).
Click Fix automatically on the results screen.
Rescue Disk attempts to remove the malicious code from all infected files, while keeping the rest of each file intact. If it fails to repair any files, the files are automatically deleted from the infected PC.
Click Quit and restart computer to exit Rescue Disk.
Do it manually
Click Do it manually on the results screen.
Tick the box next to the files you want to apply an action to, then select an action:
Fix automatically: removes only the malicious code from the selected files, while keeping the rest of each file intact. Threats that cannot be repaired are automatically deleted.
Repair selected: removes only the malicious code from the selected files, while keeping the rest of each file intact. Threats that cannot be repaired should be manually deleted.
Delete selected: permanently deletes selected files from the PC.
Click OK on the confirmation screen that appears. You can then select remaining files and apply another action.
When you are finished selecting files, click Continue,
...and select Quit and restart computer to exit Avast Rescue Disk.
When your PC restarts you can remove the external USB drive/CD containing Rescue Disk.
Microsoft Windows 10 Home / Pro / Enterprise / Education - 32 / 64-bit
Microsoft Windows 8.1 / Pro / Enterprise - 32 / 64-bit
Microsoft Windows 8 / Pro / Enterprise - 32 / 64-bit
Microsoft Windows 7 Home Basic / Home Premium / Professional / Enterprise / Ultimate - Service Pack 1, 32 / 64-bit
Microsoft Windows Vista Home Basic / Home Premium / Business / Enterprise / Ultimate - Service Pack 2, 32 / 64-bit
Microsoft Windows XP Home / Professional / Media Center Edition - Service Pack 3, 32-bit
We are sorry, unfortunately this article is not available in the selected language. Would you like to continue reading the article in the current language or go to our home page in the language you have just selected?