[... convert disk to disk]

Example:

qemu-img.exe convert -f vmdk "sourcefile.vmdk" -O vhdx -o subformat=dynamic "target-file.vhdx" -p

qemu-img.exe info "vmdisk-file"

qemu-img.exe check "vmdisk-file"

qemu-img [standard options] command [command options]

qemu-img version 2.3.0, Copyright (c) 2004-2008 Fabrice Bellard

usage: qemu-img command [command options]

QEMU disk image utility

Command syntax:

  check [-q] [-f fmt] [--output=ofmt] [-r [leaks | all]] [-T src_cache] filename

  create [-q] [-f fmt] [-o options] filename [size]

  commit [-q] [-f fmt] [-t cache] [-b base] [-d] [-p] filename

  compare [-f fmt] [-F fmt] [-T src_cache] [-p] [-q] [-s] filename1 filename2

  convert [-c] [-p] [-q] [-n] [-f fmt] [-t cache] [-T src_cache] [-O output_fmt] [-o options] [-s snapshot_id_or_name] [-l snapshot_param] [-S sparse_size] filename [filename2 [...]] output_filename

  info [-f fmt] [--output=ofmt] [--backing-chain] filename

  map [-f fmt] [--output=ofmt] filename

  snapshot [-q] [-l | -a snapshot | -c snapshot | -d snapshot] filename

  rebase [-q] [-f fmt] [-t cache] [-T src_cache] [-p] [-u] -b backing_file [-F backing_fmt] filename

  resize [-q] filename [+ | -]size

  amend [-p] [-q] [-f fmt] [-t cache] -o options filename

Command parameters:

  'filename' is a disk image filename

  'fmt' is the disk image format. It is guessed automatically in most cases

  'cache' is the cache mode used to write the output disk image, the valid

    options are: 'none', 'writeback' (default, except for convert), 'writethrough',

    'directsync' and 'unsafe' (default for convert)

  'src_cache' is the cache mode used to read input disk images, the valid

    options are the same as for the 'cache' option

  'size' is the disk image size in bytes. Optional suffixes

    'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),

    'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P)  are

    supported. 'b' is ignored.

  'output_filename' is the destination disk image filename

  'output_fmt' is the destination format

  'options' is a comma separated list of format specific options in a

    name=value format. Use -o ? for an overview of the options supported by the

    used format

  'snapshot_param' is param used for internal snapshot, format

    is 'snapshot.id=[ID],snapshot.name=[NAME]', or

    '[ID_OR_NAME]'

  'snapshot_id_or_name' is deprecated, use 'snapshot_param'

    instead

  '-c' indicates that target image must be compressed (qcow format only)

  '-u' enables unsafe rebasing. It is assumed that old and new backing file

       match exactly. The image doesn't need a working backing file before

       rebasing in this case (useful for renaming the backing file)

  '-h' with or without a command shows this help and lists the supported formats

  '-p' show progress of command (only certain commands)

  '-q' use Quiet mode - do not print any output (except errors)

  '-S' indicates the consecutive number of bytes (defaults to 4k) that must

       contain only zeros for qemu-img to create a sparse image during

       conversion. If the number of bytes is 0, the source will not be scanned for

       unallocated or zero sectors, and the destination image will always be

       fully allocated

  '--output' takes the format in which the output must be done (human or json)

  '-n' skips the target volume creation (useful if the volume is created

       prior to running qemu-img)

Parameters to check subcommand:

  '-r' tries to repair any inconsistencies that are found during the check.

       '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all

       kinds of errors, with a higher risk of choosing the wrong fix or

       hiding corruption that has already occurred.

Parameters to snapshot subcommand:

  'snapshot' is the name of the snapshot to create, apply or delete

  '-a' applies a snapshot (revert disk to saved state)

  '-c' creates a snapshot

  '-d' deletes a snapshot

  '-l' lists all snapshots in the given image

Parameters to compare subcommand:

  '-f' first image format

  '-F' second image format

  '-s' run in Strict mode - fail on different image size or sector allocation

Supported formats: dmg vpc host_device bochs blkverify blkdebug parallels file nbd vmdk vdi qcow2 qed cloop qcow vhdx sheepdog null-aio vvfat raw null-co

qemu-img bietet viele Möglichkeiten (siehe Befehlsreferenz), die im Normalfall aber gar nicht benötigt werden.