Convert FAT32 to NTFS

By pattip
May 30, 2005
  1. I am running XP Home. At one time I used PartitionMagic to convert the file system from NTFS to Fat. Now I would like to go back to NTFS. The Windows program doesn't work. It says that there is not enough memory. PartitionMagic will not work at all for some unexplained reason. Please help.
  2. Nodsu

    Nodsu TS Rookie Posts: 5,837   +6

    Not enough memory? Maybe you mean not enough disk space in which case the solution is obvious.

    "Will not work" in the PM case means what? PM displays a huge dialog saying "I will not work!"?
  3. IronDuke

    IronDuke TS Rookie Posts: 856

    You may well have to re-create the partition.

    IMPORTANT! You will lose file system-specific information when converting from
    NTFS to FAT. Refer to “NTFS Information Lost When Converting to FAT
    or FAT32” on page 75 for additional information.
    If the conversion fails when you apply changes, refer to the bulleted list below for a list of
    possible reasons.
    Restrictions on Converting NTFS Partitions to FAT or FAT32
    NTFS is a more advanced file system than FAT and FAT32. Therefore, depending on the
    NTFS features used on the partition, the type of data, and partition size, you may or may
    not be allowed to complete the conversion.
    If you receive an error message and the conversion stops, it is usually caused by one or
    more of the following:
    • The file system for conversion is not allowed for the current partition size. A FAT32
    partition should be greater than 256 MB, and a FAT partition must be less than 2 GB.
    • The NTFS partition has data in memory that has not yet been written to the hard disk.
    • ·The Windows 2000/XP NTFS partition has compressed files, sparse files, reparse
    points, or encrypted files. In such case, you can uncompress and/or move (or delete)
    the sparse files, then repeat the conversion.
    • The file system has errors, such as lost clusters and cross-linked files. You can fix
    these problems, then try the conversion again.
    • There is not enough temporary space in the partition to do the conversion. The
    conversion will require the NTFS system and the FAT32 system files until the last
    step of the conversion. Also, there is data in NTFS File Replication Services that must
    be moved to external clusters and saved.
  4. Phantasm66

    Phantasm66 TS Rookie Posts: 5,734   +7

    C:\Documents and Settings\Administrator>convert /?
    Converts FAT volumes to NTFS.

    CONVERT volume /FS:NTFS [/V] [/CvtArea:filename] [/NoSecurity] [/X]

    volume Specifies the drive letter (followed by a colon),
    mount point, or volume name.
    /FS:NTFS Specifies that the volume is to be converted to NTFS.
    /V Specifies that Convert should be run in verbose mode.
    Specifies a contiguous file in the root directory to be
    the place holder for NTFS system files.
    /NoSecurity Specifies the converted files and directories security
    settings to be accessible by everyone.
    /X Forces the volume to dismount first if necessary.
    All opened handles to the volume would then be invalid.

    C:\Documents and Settings\Administrator>convert c: /FS:NTFS

    It might be best if you backed everything up first, or at least the important stuff anyway.
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