Virus detected in the boot

In order to disinfect a boot virus, two diskettes are needed: a boot disk to guarantee virus-free booting and another for disinfection.

It is possible to create a boot disk using the Safedisk utility included with Panda Antivirus or using the procedure described below.

If the Safedisk tool is used, it will create two disks, firstly a boot disk and secondly a disinfection disk. Otherwise, you have all the necessary tools for disinfection in the DOSWIN3X directory on the Panda Antivirus CD-ROM.

The procedure is as follows:

  1. Switch off your computer. Insert a virus-free boot disk (if you are going to carry out disinfection from the CD-ROM, the diskette should load the CD drivers), and reset your computer.

  2. Once you have started the computer, insert the disinfection disk. If you are going to carry out disinfection from the CD, insert the Panda Antivirus CD-ROM and go to the DOSWIN3X directory.

  3. Then execute our command-line antivirus (PAVCL) by typing the following: PAVCL /ALL /CLV /AEX.

  4. If a virus is detected in memory once, you should continue. When the virus is found on the hard drive, press S to disinfect.

Boot disk

To generate a virus-free boot disk, it is necessary for such a disk to be created on a virus-free computer. The Safedisk utility is for creating such disks, first a boot disk and then a disinfection disk.

If you created the above-mentioned diskettes with the Safedisk utility before virus infection, use the first diskette as the boot disk. If you did not create these diskettes, find a virus-free computer and take the following steps:

  1. Insert an empty disk and type FORMAT A: /S.

  2. Go to the DOS directory using the command CD DOS.

  3. Copy the HIMEM.SYS and SMARTDRV.EXE files on the diskette by typing COPY HIMEM.SYS A: followed by COPY SMARTDRV.EXE A:.

  4. Edit the CONFIG.SYS file in drive A using the following command: EDIT A:\CONFIG.SYS.

  5. On the editor that appears, type the following two lines: DEVICE=HIMEM.SYS and DOS=HIGH.

  6. Choose the Save option in the File menu then the Exit option in the same menu..

  7. Edit the AUTOEXEC.BAT file in drive A using the following command: EDIT A:\AUTOEXEC.BAT.

  8. On the editor that appears, type the following line: SMARTDRV.EXE.

Choose the Save option in the File then the Exit option within the same menu.