Avast 2016: Creating and using Avast Rescue Disk

How to create and use Avast Rescue Disk

Some malware prevents you from installing or using Avast Antivirus. In such cases, you can use Avast Rescue Disk to remove infected files.

Create Rescue Disk on a USB drive or CD

To create a Rescue Disk image you need:

Computers manufactured around year 2000 may not boot from USB drive. In this case you should use the Alternative method to create Rescue Disk on a CD.

To create Rescue Disk on a USB drive,

To create Rescue Disk on a CD,

  1. Open the Avast user interface.
  2. From the main menu, select Tools and then Rescue Disk.
  3. Insert an empty USB drive into the USB port and select USB from the drop-down menu. Then click Create Rescue Disk... ...and select the drive letter indicating your USB drive. If asked, confirm Yes to erase content of selected USB drive.
  4. Select CD, then Create Rescue Disk ... ...then click browse to save the ISO file (CD image) on the computer. Select the location and click Save. Then click Create ISO.
  5. A progress bar appears while your Rescue Disk is being created. When the Rescue Disk image is complete, click OK.
  6. A progress bar appears while your Rescue Disk is created. When the Rescue Disk image is complete, click OK. The ISO file is saved to your computer and ready to burn to a CD.
  7. Next burn the image on a blank recordable CD using a CD/DVD-writer software.

Boot up your computer from Rescue Disk

After creating a Rescue Disk image you can boot the computer containing malware using the external USB (Preferred method) or CD (Alternative method) drive instead of the internal hard drive.

To boot from Rescue Disk on a USB drive,

To boot from Rescue Disk on a CD,

  1. Turn off the computer and insert USB drive with Rescue Disk into the USB port.
  2. Insert CD with Rescue Disk into CD/DVD drive on the computer and turn it off.
  3. Turn on the computer to be scanned. As soon as it is powered on, 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 computer and BIOS manufacturers, there are numerous ways to access the Boot Menu. The keys that are commonly used are Esc, F12 or F11. Some computer 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 computer again and immediately start tapping that key.
  4. 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.)
  5. 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.)
  6. When you have selected to boot from the appropriate external media, a message appears instructing you to press any key. This action starts Rescue Disk.
If you cannot access the Boot Menu, refer to the computer's documentation on the manufacturer's website, or try to contact manufacturer's support. Computers manufactured around year 2000 may not boot from USB drive.

Scan your computer for viruses

When Rescue Disk starts up on the computer, it is ready to scan for malware.

  1. Select an option:
    • All hard discs - Scan the entire computer.
    • Selected folders/discs - Scan only specific folder(s) or disc(s) on the computer. Click Change to select the folder(s) or disc(s) to scan. Click OK.
    Tick Scan all archives to scan compressed files (RAR, ZIP, etc).
  2. Click Start scan. A progress bar appears.
  3. When scanning is finished, a scan report appears. Any threats found are listed in the report, ...and also in the results screen.

Repair or delete infected files

After scanning the computer Rescue Disk notifies you of any threats found. When threats are found, two options are available.

Fix automatically
  1. Rescue Disk tries 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 will be automatically deleted from the infected computer.
  2. Click Quit and restart computer to exit Rescue Disk.
Do it manually
  1. When you select do it manually you can select threats to repair or delete.
  2. On the next screen you can tick the checkbox besides each file to repair or delete. Then select an option:
    • Fix automatically - Remove 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 - Remove 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 delete selected files from the computer.
    When completed a confirmation appears. Click OK.
    If you selected Scan all archives and a threat was found in an archive, you can also Delete infected archives.
  3. When completed click Continue, ...and select Quit and restart computer to exit Avast Rescue Disk.

When the computer restarts you can remove the external USB drive/CD containing Rescue Disk from your computer.

  • Avast Premier 2016
  • Avast Internet Security 2016
  • Avast Pro Antivirus 2016
  • Avast Free Antivirus 2016
  • Microsoft Windows 10 Home / Pro / Enterprise / Education
  • Microsoft Windows 8.1 / Pro / Enterprise
  • Microsoft Windows 8 / Pro / Enterprise
  • Microsoft Windows 7 Home Basic / Home Premium / Professional / Enterprise / Ultimate
  • Microsoft Windows Vista Home Basic / Home Premium / Business / Enterprise / Ultimate
  • Microsoft Windows XP Home / Professional / Media Center Edition

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