08-07-2013
File system restore
Hello,
I have a big trouble with SCO Open Server. After improper shutdown the file system has damaged. I can see the partitions as volume sizes with divvy command, but the labels are missing (boot, root, etc), so I can not address them when using fsck command. Is there any chance to restore the file system? There is very important information on the disk, but there is no backup...
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MMLS(1) General Commands Manual MMLS(1)
NAME
mmls - Display the partition layout of a volume system (partition tables)
SYNOPSIS
mmls [-t mmtype ] [-o offset ] [ -i imgtype ] [-b dev_sector_size] [-BrvV] [-aAmM] image [images]
DESCRIPTION
mmls displays the layout of the partitions in a volume system, which include partition tables and disk labels.
ARGUMENTS
-t mmtype
Specify the media management type. Use '-t list' to list the supported types. If not given, autodetection methods are used.
-o offset
Specify the offset into the image where the volume containing the partition system starts. The relative offset of the partition
system will be added to this value.
-b dev_sector_size
The size, in bytes, of the underlying device sectors. If not given, the value in the image format is used (if it exists) or
512-bytes is assumed.
-i imgtype
Identify the type of image file, such as raw or split. If not given, autodetection methods are used.
-B Include a column with the partition sizes in bytes
-r Recurse into DOS partitions and look for other partition tables. This setup frequently occurs when Unix is installed on x86 sys-
tems.
-v Verbose output of debugging statements to stderr
-V Display version
-a Show allocated volumes
-A Show unallocated volumes
-m Show metadata volumes
-M Hide metadata volumes
image [images]
One (or more if split) disk images whose format is given with '-i'.
'mmls' is similar to 'fdisk -lu' in Linux with a few differences. Namely, it will show which sectors are not being used so that those can
be searched for hidden data. It also gives the length value so that it can be plugged into 'dd' more easily for extracting the partitions.
It also will show BSD disk labels for Free, Open, and NetBSD and will display the output in sectors and not cylinders. Lastly, it works on
non-Linux systems.
If none of -a, -A, -m, or -M are given then all volume types will be listed. If any of them are given, then only the types specified on
the command line will be listed.
Allocated volumes are those that are listed in a partition table in the volume system AND can store data. Unallocated volumes are virtu-
ally created by mmls to show you which sectors have not been allocated to a volume. The metadata volumes overlap the allocated and unallo-
cated volumes and describe where the partition tables and other metadata structures are located. In some volume systems, these structures
are in allocated space and in others they are in unallocated space. In some volume systems, their location is explicitly given in the par-
tition tables and in others they are not.
EXAMPLES
To list the partition table of a Windows system using autodetect:
# mmls disk_image.dd
To list the contents of a BSD system that starts in sector 12345 of a split image:
# mmls -t bsd -o 12345 -i split disk-1.dd disk-2.dd
AUTHOR
Brian Carrier <carrier at sleuthkit dot org>
MMLS(1)