Basic data partition

Basic data partition

In Microsoft operating systems, when using basic disk partitioned with GUID Partition Table (GPT) layout, a basic data partition (BDP) is any partition identified with Globally Unique Identifier (GUID) of EBD0A0A2-B9E5-4433-87C0-68B6B72699C7.cite web|url=http://www.microsoft.com/whdc/device/storage/GPT_FAQ.mspx|work=Windows and GPT FAQ|title=Windows GPT Implementation]

In the GPT scheme, BDPs are the only partition types which Windows XP 64-bit can mount and normally assign drive letters. [cite web|url=http://technet2.microsoft.com/WindowsServer/en/Library/ca099518-dde5-4eac-a1f1-38eff6e3e5091033.mspx|work=Microsoft TechNet|title=DiskPart documentation]

According to Microsoft, the basic data partition is the equivalent to partition types 0x06, 0x07, and 0x0B (FAT16, NTFS, FAT32) in the traditional MBR partition table. In practice it is equivalent to 0x01, 0x04, 0x0C, and 0x0E (various older FAT partitions) types as well.

A Basic Data Partition can be formatted with any filesystem format, although most commonly BDPs are formatted with the FAT32 or NTFS filesystem formats. To programatically determine which filesystem format a BDP contains, Microsoft specifies that one should inspect the BIOS Parameter Block that is contained in the BDP's Volume Boot Record.

When a Microsoft operating system converts a GPT-partitioned basic disk to a dynamic disk, all BDPs are combined and converted to a single Logical Disk Manager data partition identified with GUID AF9B60A0-1431-4F62-BC68-3311714A69AD. This is analogous to the conversion from partition types 0x01, 0x04, 0x06, 0x07, 0x0B, 0x0C, and 0x0E to partition type 0x42 on MBR partitioned disks.

References

See also

* Microsoft Reserved Partition (MSR), a reserved partition on GPT disk
* EFI System Partition (ESP), a reserved partition on GPT disk
* Disk partitioning


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