chdman - MAME Compressed Hunks of Data (CHD) manager

chdman is the (C)ompressed (H)unks of (D)ata (CHD) manager for MAME.  It is a tool to manage CHD images.

       chdman - MAME Compressed Hunks of Data (CHD) manager

       Please  note  that each option allows a set of switches, the meaning of each is explained in the SWITCHES
       section below. Whenever the short form for the switch is listed, the long one may be used instead.

       help [option]
              Print a summary of the available options or, if option is given, a  detailed  list  of  the  valid
              switches for the option.

       info-ifilename [-v]
              Dump the header information from a drive image.

       verify-ifilename [-ipfilename]
              Validate the MD5/SHA1 on a drive image.

       createraw-ofilename [-opfilename] [-f] -ifilename [-isboffset] [-ishoffset] [-iblength] [-ihlength] -hsbytes-usbytes [-cnone|type1[,[...]]] [-npprocessors]
              Create a new compressed raw image from a raw file.

       createhd-ofilename [-opfilename] [-f] [-ifilename] [-isboffset] [-ishoffset] [-iblength] [-ihlength] [-hsbytes] [-cnone|type1[,[...]]] [-chscylinders,heads,sectors] [-ssbytes] [-npprocessors]
              Create a new compressed hard disk image from a raw file.

       createcd-ofilename [-opfilename] [-f] -ifilename [-hsbytes] [-cnone|type1[,[...]]] [-npprocessors]
              Create a new compressed CD image from a raw file.

       createld-ofilename [-opfilename] [-f] -ifilename [-isfoffset] [-iflength] [-hsbytes] [-cnone|type1[,[...]]] [-npprocessors]
              Create a new compressed laserdisc image from a raw file.

       extractraw-ofilename [-f] -ifilename [-ipfilename] [-isboffset] [-ishoffset] [-iblength] [-ihlength]
              Extract a raw file from a CHD image.

       extracthd-ofilename [-f] -ifilename [-ipfilename] [-isboffset] [-ishoffset] [-iblength] [-ihlength]
              Extract a hard disk block image from a CHD image.

       extractcd-ofilename [-obfilename] [-f] -ifilename [-ipfilename]
              Extract a CDRDAO .toc/.bin, CDRWIN .bin/.cue, or Sega Dreamcast .GDI file from a CHD-CD image.

       extractld-ofilename [-f] -ifilename [-ipfilename] [-isfoffset] [-iflength]
              Extract a laserdisc image from a CHD-LD image.

       copy-ofilename [-opfilename] [-f] -ifilename [-ipfilename] [-isboffset] [-ishoffset] [-iblength]
       [-ihlength] -hsbytes [-cnone|type1[,[...]]] [-npprocessors]
              Copy  all hunks of data from one CHD file to another. The hunk sizes do not need to match.  If the
              source is shorter than the destination, the source data will be padded with 0s.

       addmeta-ifilename-ttag [-ixindex] [-vttext] [-vffilename] [-nocs]
              Add metadata to the chd.

       delmeta-ifilename-ttag [-ixindex]
              Remove metadata from the chd.

       dumpmeta-ifilename [-ofilename] [-f] -ttag [-ixindex]
              Dump metadata from the chd to standard output or to a file.

mame(6), mess(6)

0.176                                              2016-07-21                                          CHDMAN(1)

--chs,-chscylinders,heads,sectors
              Specifies CHS geometry values for CHD harddisks.

       --compression,-cnone|type1[,[...]]
              Which compression codecs to use (up to 4).

       --force,-f
              Force overwriting an existing file.

       --hunksize,-hsbytes
              Size of each unit, in hunks.

       --ident,-idfilename
              Name of ident file to provide CHS information.

       --index,-ixindex
              Indexed instance of the metadata tag.

       --input,-ifilename
              Input file name.

       --inputbytes,-iblength
              Effective length of the input in bytes.

       --inputframes,-iflength
              Effective length of the input in frames.

       --inputhunks,-ihlength
              Effective length of the input in hunks.

       --inputparent,-ipfilename
              Parent CHD's input file name.

       --inputstartbyte,-isboffset
              Starting byte offset within the input.

       --inputstartframe,-isfoffset
              Starting frame offset within the input.

       --inputstarthunk,-ishoffset
              Starting hunk offset within the input.

       --nochecksum,-nocs
              Do not include this metadata information in the overall SHA-1.

       --numprocessors,-npcount
              Limits the number of processors to use during compression.

       --output,-ofilename
              Output file name.

       --outputbin,-obfilename
              Output binary file name for extractcd.

       --outputparent,-opfilename
              Parent CHD's output file name.

       --sectorsize,-ssbytes
              Size of each hard disk sector.

       --tag,-ttag
              4-character tag for metadata.

       --valuefile,-vffilename
              Text file containing data to add.

       --valuetext,-vttext
              Text for the metadata.

       --unitsize,-usbytes
              Size of each unit, in bytes.

       --verbose,-v
              Output additional information about the operation.

chdmanoption