By
Norton AntiVirus
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** Disappearing Hard Drives **
**********************************************************************
Several viruses, such as Frankenstein and Stoned.Empire.Monkey, cause
your hard disk to "disappear" when booting from a clean floppy disk.
This occurs because the virus either encrypts or relocates the hard
disk partition table (a vital part of the disk's system area).
All "appears" well when you boot from your hard disk because the
virus actives in memory and tells DOS where the partition table is
relocated, or acts as the partition table itself. If you boot clean,
DOS can't find the partition table and the virus isn't around to give
directions. You may receive an "Invalid drive specification" or
similar error when trying to access the hard disk.
When you boot clean so NAV can repair such an infection, the hard
disk will not appear in the drive list. Don't worry! NAV, with the
default options enabled, will bypass DOS and look directly at the
hard disk to check the system area for infection, no matter what you
scan. For example, scanning a floppy disk will scan memory, the
floppy disk, and the system area of the hard disk. If such an
infection is discovered, you are alerted appropriately.
NOTE: IDE hard drives larger than 1024 cylinders often require the
use of additional driver or overlay files. If you have such a drive,
you may need to include these additional files on your Norton
AntiVirus Rescue Disk to ensure recovery from virus emergencies. Make
sure that any special driver or overlay files for your hard drive,
which are part of your normal system configuration, are included on
your rescue disk.
Norton AntiVirus
**********************************************************************
** Disappearing Hard Drives **
**********************************************************************
Several viruses, such as Frankenstein and Stoned.Empire.Monkey, cause
your hard disk to "disappear" when booting from a clean floppy disk.
This occurs because the virus either encrypts or relocates the hard
disk partition table (a vital part of the disk's system area).
All "appears" well when you boot from your hard disk because the
virus actives in memory and tells DOS where the partition table is
relocated, or acts as the partition table itself. If you boot clean,
DOS can't find the partition table and the virus isn't around to give
directions. You may receive an "Invalid drive specification" or
similar error when trying to access the hard disk.
When you boot clean so NAV can repair such an infection, the hard
disk will not appear in the drive list. Don't worry! NAV, with the
default options enabled, will bypass DOS and look directly at the
hard disk to check the system area for infection, no matter what you
scan. For example, scanning a floppy disk will scan memory, the
floppy disk, and the system area of the hard disk. If such an
infection is discovered, you are alerted appropriately.
NOTE: IDE hard drives larger than 1024 cylinders often require the
use of additional driver or overlay files. If you have such a drive,
you may need to include these additional files on your Norton
AntiVirus Rescue Disk to ensure recovery from virus emergencies. Make
sure that any special driver or overlay files for your hard drive,
which are part of your normal system configuration, are included on
your rescue disk.
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