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hfs.util(8) [osx man page]

HFS.UTIL(8)						    BSD System Manager's Manual 					       HFS.UTIL(8)

NAME
hfs.util -- HFS/HFS+ file system utility SYNOPSIS
hfs.util -m device mountpoint [mountflag1] [mountflag2] [mountflag3] [mountflag4] hfs.util -p device [mountflag1] [mountflag2] [mountflag3] [mountflag4] hfs.util -J [size] mountpoint hfs.util -U mountpoint hfs.util -N device hfs.util -I mountpoint hfs.util [-aksu] device DESCRIPTION
The hfs.util command supports the mounting, probing, and unmounting of HFS file systems. Options: -a Adopt permissions for the HFS file system at device -I Print out status information about the journal on the HFS file system at mountpoint -J [size] Enable journaling on the HFS file system mounted on mountpoint. An optional size may be specified (e.g. 32M for a 32 megabyte journal). -k Get the UUID key for the HFS file system at device. -m Mount the HFS file system located on device onto mountpoint with the flags mountflag1 mountflag2 mountflag3 mountflag4 -M Force mount the HFS file system located on device onto mountpoint with the flags mountflag1 mountflag2 mountflag3 mountflag4. This is a deprecated option. -N Disable journaling on a HFS+ file system located at device -p Probe the device for an HFS file system using the flags mountflag1 mountflag2 mountflag3 mountflag4 -s Set the UUID key (generates a new UUID value) for the HFS file system at device -u Unmount the HFS file system located at device -U Disable journaling on the HFS+ file system mounted on mountpoint The mountflags referenced above are either: o removable or fixed o readonly or writeable o suid or nosuid o dev or nodev Note that for the device references above, you must only supply the last component of the path to the device in question, such as disk0s2 rather than /dev/disk0s2. SEE ALSO
diskarbitrationd(8) HISTORY
Derived from the Openstep Workspace Manager file system utility programs. Darwin July 16, 2003 Darwin

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FSCK_HFS(8)						    BSD System Manager's Manual 					       FSCK_HFS(8)

NAME
fsck.hfs -- HFS file system consistency check SYNOPSIS
fsck.hfs -q [-df] special ... fsck.hfs -p [-df] special ... fsck.hfs [-n | -y | -r] [-dfgl] [-m mode] [-c size] special ... DESCRIPTION
The fsck.hfs utility verifies and repairs standard HFS and HFS+ file systems. The first form of fsck.hfs quickly checks the specified file systems to determine whether they were cleanly unmounted. The second form of fsck.hfs preens the specified file systems. It is normally started by fsck(8) during systen boot, when a HFS file system is detected. When preening file systems, fsck.hfs will fix common inconsistencies for file systems that were not unmounted cleanly. If more serious problems are found, fsck.hfs does not try to fix them, indicates that it was not successful, and exits. The third form of fsck.hfs checks the specified file systems and tries to repair all detected inconsistencies. If no options are specified fsck.hfs will always check and attempt to fix the specified file systems. The options are as follows: -c size Specify the size of the cache used by fsck.hfs internally. Bigger size can result in better performance but can result in deadlock when used with -l option. Size can be specified as a decimal, octal, or hexadecimal number. If the number ends with a ``k'', ``m'', or ``g'', the number is multiplied by 1024 (1K), 1048576 (1M), or 1073741824 (1G), respectively. -d Display debugging information. This option may provide useful information when fsck.hfs cannot repair a damaged file system. -f When used with the -p option, force fsck.hfs to check `clean' file systems, otherwise it means force fsck.hfs to check and repair journaled HFS+ file systems. -g Causes fsck.hfs to generate its output strings in GUI format. This option is used when another application with a graphical user interface (like Mac OS X Disk Utility) is invoking the fsck.hfs tool. -l Lock down the file system and perform a test-only check. This makes it possible to check a file system that is currently mounted, although no repairs can be made. -m mode Mode is an octal number that will be used to set the permissions for the lost+found directory when it is created. The lost+found directory is only created when a volume is repaired and orphaned files or directories are detected. fsck.hfs places orphaned files and directories into the lost+found directory (located at the root of the volume). The default mode is 01777. -p Preen the specified file systems. -q Causes fsck.hfs to quickly check whether the volume was unmounted cleanly. If the volume was unmounted cleanly, then the exit status is 0. If the volume was not unmounted cleanly, then the exit status will be non-zero. In either case, a message is printed to standard output describing whether the volume was clean or dirty. -y Always attempt to repair any damage that is found. -n Never attempt to repair any damage that is found. -r Rebuild the catalog file on the specified file system. This option currently will only work if there is enough contiguous space on the specified file system for a new catalog file and if there is no damage to the leaf nodes in the existing catalog file. SEE ALSO
fsck(8) BUGS
fsck.hfs is not able to fix some inconsistencies that it detects. HISTORY
The fsck.hfs command appeared in Mac OS X Server 1.0 . Mac OS X November 21, 2002 Mac OS X
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