Newsgroup: it.comp.os.win.win9x
Titolo: fdisk/mbr non si trova!!!!

Non trovo questo comando, ne nel disco di ripristino di win 98 ne in
windows/command.
Chi mi sa dire dove posso trovarlo
grazie


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start\esegui
fdisk /mbr <invio>
 @@@@@@@@@@@
Cordiali Saluti
 Francesco M.

 Chi mi sa dire dove posso trovarlo
Non lo trovi per il semplice motivo che devi cercare il comando fdisk...
/mbr e` solo una delle opzioni asociabili a tale comando (quindi deve
esserci uno spazio tra fdisk e /mbr)...

 ha scritto nel messaggio
news:GNnq7.250271$Lw3.16...@news2.aus1.giganews.com...
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Lo trovi ...: in
C:\WINDOWS\COMMAND\FDISK.EXE
inoltre /mbr è solo un parametro e il comando deve essere eseguito da floppy
di ripristino in DOS puro...
....fatto da C: è privo di significato utile
Walter

....fatto da C: è privo di significato utile
Di questo, io non ne sono mica tanto convinto...
Anzi, fdisk ti avverte pure di chiudere windows
e riavviare per attuare le modifiche.
Quindi si puo' usare anche in finestra.
-- 
extrabug

 Di questo, io non ne sono mica tanto convinto...
Scusa ...il problema è tuo...;-))
Walter

 wrote in message
GNnq7.250271$Lw3.16...@news2.aus1.giganews.com...


 Ma voi ci avete provato sui vostri PC??
Non devi cercare il  /mbr, non lo troverai mai, è solo un parametro di
fdisk, per giunta non documentato.
Tutto quello che devi fare, e che ti è stato ripetuto più volte, è
disporre di un dischetto di avvio con sopra fdisk.exe, e scrivere al
prompt a:\> il comando:
fdisk /mbr
Dai l'invio et voilà... non aspettarti alcun messaggio di conferma...
non succede proprio nulla, però l'mbr è ripristinato.
Per maggiori informazioni leggi il seguente articolo della MS
Knowledge Base:
      FDISK /MBR Rewrites the Master Boot Record
----------------------------------------------------------------------
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The information in this article applies to:
  a.. Microsoft MS-DOS operating system
  b.. Microsoft Windows 95
  c.. Microsoft Windows 98
  d.. Microsoft Windows Millennium Edition
----------------------------------------------------------------------
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SUMMARY
The MS-DOS Fdisk utility usually updates the master boot record (MBR)
only if no master boot record exists. Repartitioning with Fdisk does
not rewrite this information.
Fdisk has an undocumented parameter called /mbr that causes it to
write the master boot record to the hard disk without altering the
partition table information.
WARNING: Writing the master boot record to the hard disk in this
manner can make certain hard disks partitioned with SpeedStor
unusable. It can also cause problems for some dual-boot programs and
disks with more than four partitions.
MORE INFORMATION
What is the MBR?
At the end of the ROM BIOS bootstrap routine, the BIOS reads and
executes the first physical sector of the first floppy or hard disk on
the system. This first sector of the hard disk is called the master
boot record (or sometimes the partition table or master boot block).
There is a small program at the beginning of this sector of the hard
disk. The partition information, or partition table, is stored at the
end of this sector. This program uses the partition information to
determine which partition is bootable (usually the first primary DOS
partition) and attempts to boot from it.
This program is written to the disk by the fdisk /mbr command and is
usually called the master boot record. During typical operation, Fdisk
writes this program to the disk only if there is no master boot
record.
NOTE: The fdisk /mbr command only re-writes the MBR on the system
drive (DISK-0) using BIOS calls. You cannot specify any other drive
for the fdisk /mbr command to operate on other than DISK-0.
Why is the MBR Changed During Setup?
During the installation of Microsoft MS-DOS Upgrade, Setup replaces
the master boot record on the hard disk with code to display a message
similar to:
  The MS-DOS 5.0 Setup was not completed.
  Insert the UNINSTALL #1 diskette in drive A.
  Press the ENTER key to continue.
This message should be erased and the master boot code rewritten
before Setup is completed. If a problem occurs during Setup and you
return to the previous version of MS-DOS, Uninstal should also remove
this message. However, if Setup or Uninstal does not remove this
message, or if the master boot record becomes corrupted, a new master
boot record can be written to the disk using the following command:
  fdisk /mbr
WARNINGS
Do not use this command if any of the following conditions exists:
  a.. The disk was partitioned using the Storage Dimensions SpeedStor
utility with its /bootall option.
  b.. More than four partitions exist.
  c.. Certain dual-boot programs are in use.
The Storage Dimensions SpeedStor utility with the /bootall option
redefines the drive's physical parameters (cylinder, head, and
sector). The /bootall switch stores information about how the drive
has been changed in an area of the master boot record that MS-DOS does
not use. The fdisk /mbr command erases that information, making the
disk unusable.
Some older original equipment manufacturer (OEM) versions of MS-DOS
and some third-party partitioning utilities can create more than four
partitions. Additional partition information is commonly stored
information on partitions in an area that the fdisk /mbr command
overwrites.
Some dual-boot programs have a special MBR that asks you at startup
which operating system you want to use. The fdisk /mbr command erases
this program. Dual-boot systems that boot whichever partition is
marked Active are not affected by the fdisk /mbr command.
For more information about partitioning, query on the following word
in the Microsoft Knowledge Base:
  partitioning
The third-party products discussed in this article are manufactured by
vendors independent of Microsoft; we make no warranty, implied or
otherwise, regarding these products' performance or reliability.
REFERENCES
More information on partitioning, disk organization, and the boot
sequence can also be found in Chapters 3 and 8 of the DOS Programmer's
Reference by Terry Dettmann, published by the QUE Corporation;
Chapters 2 and 10 of Advanced MS-DOS Programming by Ray Duncan, and
article 3 of The MS-DOS Encyclopedia, both published by Microsoft
Press.