It is a dangerous memory resident boot virus. It hooks INT 13h and writes itself to boot sectors of the floppy disks and to the MBR of the hard drive. While infecting a floppy disk the virus does not save the original boot sector. While loading from such disk the virus (not the system!) displays the message:
Non-System disk or disk error
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The virus corrupts the data that is read from the disk, if that data contains an EXE header that is packed by LzExe.
