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- DOCUMENT:Q103058 18-AUG-1993 [W_NT]
- TITLE :Why Setup Reboots Three Times When Converting to NTFS
- PRODUCT :Windows NT
- PROD/VER:3.10
- OPER/SYS:WINDOWS
- KEYWORDS:
-
- ----------------------------------------------------------------------
- The information in this article applies to:
-
- - Microsoft Windows NT operating system, version 3.1
- - Microsoft Windows NT Advanced Server, version 3.1
- ----------------------------------------------------------------------
-
- The Autoconvert program converts file systems to NTFS. During Windows
- NT Setup, Autoconvert reboots your system three times. This is because
- it needs to unmount and remount partitions several times while
- handling open files. The following sequence of events occurs:
-
- 1. From Setup or Disk Administrator, file system conversion is
- initiated. Before any changes can be made to the target volume, the
- system must be rebooted.
-
- 2. NTFS requires that a particular sector (n/2) be free to store a
- backup copy of the boot sector. Autoconvert begins by noting that
- sector n/2 is not free. Autoconvert then shuffles file-system
- structures until this sector is free. To prevent any possibility of
- disk corruption due to incomplete conversion, it reboots the system
- so that the file system will remount the volume and recognize the
- changes just made.
-
- 3. Autoconvert now recognizes that sector n/2 is free. It converts the
- volume to NTFS. Once finished, it writes the new sectors, zero and
- n/2, and then, to force the file system to remount the volume as
- NTFS, reboots.
-
- 4. Autoconvert recognizes that the volume is now NTFS, displays the
- "Volume is already NTFS" message, takes itself out of the Registry,
- and lets the system continue.
-
- Additional reference words: 3.10
- KBCategory:
- KBSubCategory: STP FILSYS
-
- =============================================================================
-
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- PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS
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- OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO
- EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
- ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
- CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
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- SO THE FOREGOING LIMITATION MAY NOT APPLY.
-
- Copyright Microsoft Corporation 1993.