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nundd
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1990-08-06
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NDD (Norton Disk Doctor) (Advanced Edition only)
Description: Analyzes one or more disks and corrects the problems it finds.
If you run NDD without either the /COMPLETE or the /QUICK
switch, NDD presents you with a full-screen menu you can use
either to perform a diagnostic scan or to solve certain
specific problems. See the notes below 49 for details about
the menu system.
Syntax: Version 4.5: NDD [(drive:)...] [/COMPLETE | /QUICK] [/D0 |
/D1] [/BW] [/NOSNOW] [/R:(filespec) |
/RA:(filespec)] [/TYPE(n)]
Parameters:
(drive:) The single-letter specifier (A:, B:, C:, etc.) for the drive
you want to process. Follow the letter with a colon. To
process more than one drive, provide multiple drive specifier
(A:, B:, C:, etc.)s, separating each of these with a space.
The current drive is the default.
/BW Specifies a black-and-white display in versions 4.0 and 4.5.
/D0 Requests the standard screen driver (the default) for a fully
IBM-compatible computer system.
/D1 Requests the screen driver for a BIOS-compatible computer
system.
/COMPLETE Performs a complete analysis of the specified disk. The
analysis includes reading all data sectors and attempting to
move data in allocated unusable sectors to new locations.
/NOSNOW Prevents screen flicker if your system has an older CGA card.
/QUICK Performs a quick diagnosis of the boot record, the file
allocation tables, and the directory tree structure.
/R:(filespec) Produces a report about the results of running NDD and stores
it in the named file. The (filespec) can include a drive and a
path. If the file does not already exist, NDD creates it in
the current directory on the default disk. If the file already
exists, NDD overwrites it without first prompting you for
confirmation.
/RA:(filespec) Produces a report about the results of running NDD and appends
it to the named file. The (filespec) can include a drive and a
path. If the file does not already exist, NDD does not produce
the report.
/TYPE(n) Overrides the drive type for the primary hard drive. You might
need to enter this parameter if your system setup values are
incorrect for your primary hard drive. To run NDD on a
portable system that uses RAM as a primary hard drive, enter
/TYPE1 and instruct NDD to proceed when you see the message,
``NDD doesn't recognize the Drive Type on Hard Disk 1.'' You
can also use NDD on a portable system to analyze either floppy
disks or hard drives, but you cannot use NDD to analyze
virtual (RAM) disks.
Notes:
If you do not specifically request either a complete or a quick analysis with
the /COMPLETE or the /QUICK switch, NDD presents you with a full-screen menu.
You can choose Diagnose Disk to execute disk diagnostics, Common Solutions to
perform selected recovery options, or Exit Disk Doctor to leave the utility.
If you select the Diagnose Disk option on the main menu, NDD first asks you
to select which of the drives you want to diagnose from among those it
detected on the system. For each drive you select, NDD checks the boot
record, the file allocation tables, and the directory structure. (This
diagnosis is identical to the /QUICK switch option.)
When the quick diagnosis is completed, NDD asks you whether you would also
like to test all data sectors on the selected drives. (This diagnosis is
identical to the /COMPLETE switch option.) Graphic displays show the progress
of each test as it is executed. After all tests are complete, you have the
option to produce a report of the results and to output it to either a file
or your system printer.
If you select Common Solutions from the main menu, three specific recovery
options are available. The first option, Make a Disk Bootable, lets you
rebuild a disk system area to make it bootable; this rebuild includes copying
the MS-DOS COMMAND.COM, IO.SYS, and MSDOS.SYS files from the current system
disk. Using the second option, Recover from DOS's RECOVER, you can rebuild
the subdirectories and the root directory entries on a disk against which you
inadvertently executed the MS-DOS Recover command. The third option, Revive a
Defective Diskette, lets you recover the data on a defective floppy disk by
rewriting the format information. (Unlike an MS-DOS format command, this
option reformats without destroying the original data.)
See <NUFR>, <NUFS>, <NUNU>, <NUSD>, <NUSF>.