Joshi

Joshi is a boot sector virus from 1990 that is able to infect hard drives. With regard to floppy disks, it only infects 360 kilobyte and 1.2 megabyte 5.25 inch floppies.

It was made by Manav Joshi, a software engineer in Mumbai.

Behaviour
When the system is booted with a disk infected with Joshi, the virus will become resident in memory and takes up about 6,000 bytes. The virus infects the partition tables of hard disks. It also infects any floppy disks that are accessed while the virus is resident.

On hard disks, the rest of the virus would be stored at track 0, sectors 2 to 6. The original partition table will be stored at track 0, sector 9. On floppies, it will be at 41, sectors 1 to 5 on 360 kilobyte disks and track 81, sectors 1 to 5 on 1.2 megabyte disks.

It causes any attempt to format the disk to fail with a "bad track 0" error. In addition, it protects its sectors from being overwritten by the Stoned virus. Any attempts to read the boot sector will be redirected to the copy of the boot sector.

On January 5th of any year, the screen will turn green and the text "Type Happy Birthday Joshi" will appear. The system will not respond until "Happy Birthday Joshi" is typed.

Effects
The virus originated in India, and managed to spread to Africa. It may have also made it to Germany and other parts of Europe and America.

Name
The virus gets its name from the text it displays and demands the user type on their screen. This virus has also been called "Joshua" probably because of the similarities between the names Joshua and Joshi. Joshi is a relatively common family name in India.

Virus is Made in INDIA/GUJARAT/NADIAD

Name is Mr. Vikram Joshi Live In Nadiad

Actually his Birth date is 1st May and as indian standard is DD-MM-YY and us Standard is MM-DD-YY that why it's show on 5th of January actually Mr. Joshi's birthday is at 1st of May... his contact number is 9825262284.