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committed 793c6382026==========================================LDM - Logical Disk Manager (Dynamic Disks)==========================================:Author: Originally Written by FlatCap - Richard Russon <ldm@flatcap.org>.:Last Updated: Anton Altaparmakov on 30 March 2007 for Windows Vista.Overview--------Windows 2000, XP, and Vista use a new partitioning scheme. It is a completereplacement for the MSDOS style partitions. It stores its information in a1MiB journalled database at the end of the physical disk. The size ofpartitions is limited only by disk space. The maximum number of partitions isnearly 2000.Any partitions created under the LDM are called "Dynamic Disks". There are nolonger any primary or extended partitions. Normal MSDOS style partitions arenow known as Basic Disks.If you wish to use Spanned, Striped, Mirrored or RAID 5 Volumes, you must useDynamic Disks. The journalling allows Windows to make changes to thesepartitions and filesystems without the need to reboot.Once the LDM driver has divided up the disk, you can use the MD driver toassemble any multi-partition volumes, e.g. Stripes, RAID5.To prevent legacy applications from repartitioning the disk, the LDM creates adummy MSDOS partition containing one disk-sized partition. This is what issupported with the Linux LDM driver.A newer approach that has been implemented with Vista is to put LDM on top of aGPT label disk. This is not supported by the Linux LDM driver yet.Example-------Below we have a 50MiB disk, divided into seven partitions... note:: The missing 1MiB at the end of the disk is where the LDM database is stored.+-------++--------------+---------+-----++--------------+---------+----+|Device || Offset Bytes | Sectors | MiB || Size Bytes | Sectors | MiB|+=======++==============+=========+=====++==============+=========+====+|hda || 0 | 0 | 0 || 52428800 | 102400 | 50|+-------++--------------+---------+-----++--------------+---------+----+|hda1 || 51380224 | 100352 | 49 || 1048576 | 2048 | 1|+-------++--------------+---------+-----++--------------+---------+----+|hda2 || 16384 | 32 | 0 || 6979584 | 13632 | 6|+-------++--------------+---------+-----++--------------+---------+----+|hda3 || 6995968 | 13664 | 6 || 10485760 | 20480 | 10|+-------++--------------+---------+-----++--------------+---------+----+|hda4 || 17481728 | 34144 | 16 || 4194304 | 8192 | 4|+-------++--------------+---------+-----++--------------+---------+----+|hda5 || 21676032 | 42336 | 20 || 5242880 | 10240 | 5|+-------++--------------+---------+-----++--------------+---------+----+|hda6 || 26918912 | 52576 | 25 || 10485760 | 20480 | 10|+-------++--------------+---------+-----++--------------+---------+----+|hda7 || 37404672 | 73056 | 35 || 13959168 | 27264 | 13|