ntfs-3g/doc/system_files.txt
cantab.net!aia21 9cdb31ec2d Typo fixes.
(Logical change 1.305)
2004-03-09 12:38:51 +00:00

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System files mft record numbers. All these files are always marked as used
in the bitmap attribute of the mft; presumably in order to avoid accidental
allocation for random other mft records. Also, the sequence number for each
of the system files is always equal to their mft record number and it is
never modified. (Only $MFT has a sequence number of 1, rather than 0.)
FILE_$MFT = 0, /* Master file table (mft). Data attribute
contains the entries and bitmap attribute
records which ones are in use (bit==1). */
FILE_$MFTMirr = 1, /* Mft mirror (copy of first four mft records)
in data attribute. */
FILE_$LogFile = 2, /* Journalling log in data attribute. */
FILE_$Volume = 3, /* Volume name attribute and volume information
attribute (flags and ntfs version). Windows
refers to this file as volume DASD (Direct
Access Storage Device). */
FILE_$AttrDef = 4, /* Array of attribute definitions in data
attribute. */
FILE_$root = 5, /* Root directory. */
FILE_$Bitmap = 6, /* Allocation bitmap of all clusters (lcns) in
data attribute. */
FILE_$Boot = 7, /* Boot sector (always at cluster 0) in data
attribute. */
FILE_$BadClus = 8, /* Contains all bad clusters in the non-resident
data attribute. */
FILE_$Secure = 9, /* Shared security descriptors in data attribute
and two indexes into the descriptors.
Appeared in Windows 2000. Before that, this
file was named $Quota but was unused. */
FILE_$UpCase = 10, /* Uppercase equivalents of all 65536 Unicode
characters in data attribute. */
FILE_$Extend = 11, /* Directory containing other system files (eg.
$ObjId, $Quota, $Reparse and $UsnJrnl). This
is new to NTFS3.0. */
FILE_reserved12 = 12, /* Reserved for future use (records 12-15). */
FILE_reserved13 = 13,
FILE_reserved14 = 14,
FILE_reserved15 = 15,
FILE_first_user = 16, /* First user file, used as test limit for
whether to allow opening a file or not. */