Windows sysinternals

348 Part II Usage Guide
sizing, and reliability features not supported by simple volumes. Multipartition volumes
include mirrored volumes, striped arrays (RAID-0), and RAID-5 arrays. Dynamic disks are
partitioned using LDM partitioning. The LDM maintains one unified database that stores
partitioning information for all the dynamic disks on a system and that resides in a 1-MB
reserved space at the end of each dynamic disk.
Note See Windows Internals: Including Windows Server 2008 and Windows Vista, 5 th Edition
(Microsoft Press, 2009) for more information on volume management and the LDM database.
LDMDump takes a zero-based disk number with the /d# command-line switch like this:
ldmdump /d0
Note that there is no space between the /d and the disk number.
The following example shows excerpts of LDMDump output. The LDM database header displays
first, followed by the LDM database records that describe a 12-GB volume with three
4-GB dynamic disks. The volume’s database entry is listed as Volume1 (E:). At the end of the
output, LDMDump lists the partitions and definitions of volumes stored in the database.
PRIVATE HEAD:
Signature
: PRIVHEAD
Version : 2.12
Disk Id
: b5f4a801-758d-11dd-b7f0-000c297f0108
Host Id
: 1b77da20-c717-11d0-a5be-00a0c91db73c
Disk Group Id : b5f4a7fd-758d-11dd-b7f0-000c297f0108
Disk Group Name : WIN-SL5V78KD01W-Dg0
Logical disk start : 3F
Logical disk size : 7FF7C1 (4094 MB)
Configuration start: 7FF800
Configuration size : 800 (1 MB)
Number of TOCs : 2
TOC size
: 7FD (1022 KB)
Number of Configs : 1
Config size : 5C9 (740 KB)
Number of Logs : 1
Log size
: E0 (112 KB)
TOC 1:
Signature
: TOCBLOCK
Sequence
: 0x1
Config bitmap start: 0x11
Config bitmap size : 0x5C9
Log bitmap start : 0x5DA
Log bitmap size : 0xE0
...
VBLK DATABASE:
0x000004: [000001]
Name : WIN-SL5V78KD01W-Dg0
Object Id : 0x0001
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