UNIX how to prevent the infection dos xi tong Virus

UNIX

UNIX is China's financial system has a wide range of application of an operating system. Though rarely heard UNIX will be infected by the virus, but the banks use the business application system also supports a number of other business, such as payroll service, such as going to the office system, Windows or DOS platform under the floppy disk input data to Unix the application in the system for processing. If the floppy disk virus infection, the operator and don't have time to floppy disks out, in UNIX system restarts could lead to system will not start. As the author are system branches of the SCO OpenServer Release 5.0.5 Lenovo prepared T100 1000 on the server was show:
Verifying the DMI Pool Data ......
Boot from ATAPI CD-ROM:

And then into the dead state. After analysis because dos xi tong viral infection of the UNIX system drive Main Boot partition, is causing the death. If not handled properly, will need to re-install the UNIX system to solve the problem, it's a must to be spent more time. The author combined with practical work experience and a simple solution, for relevant worker reference. Method is to use the UNIX System BOOT emergency disk to solve them. Specific measures, as follows:

First, in the normal UNIX System on making BOOT boot disk. And then use the BOOT disk guide infected with a virus UNIX system, "boot: "prompt, type:

HD (40) Unix

The "login:" When prompted, root and password, and then execute the following command:

# Instbb Hd/dev/hd0a
# Dparam-W

The above-mentioned instbb command will boot Block Partition for hard drive, dparam command will Main Boot block code to the hard drive. Reboot the system, the UNIX system that can operate normally.

In addition, for some familiar with assembly language master, can also be modified directly UNIX system drive Main Boot partition, to the right of the Code and the partition table information into infected with a virus of the UNIX system drive Main Boot partition the removal of the virus purposes. Because of this method to the operator, the high demand, won't go into much detail here.