imported>Isaidnoway: script-assisted date audit and style fixes per MOS:NUM

2024-10-08T21:47:28Z

script-assisted date audit and style fixes per MOS:NUM

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{{Use mdy dates|date=October 2024}}
{| class="wikitable floatright"
|+ Microsoft-defined GPT attribute flags for BDPs<ref>{{cite web|url=https://technet.microsoft.com/en-us/library/cc739412(v=ws.10).aspx |work=Microsoft TechNet |title=How Basic Disks and Volumes Work | date=March 28, 2003}}</ref>
|-
! Bit number !! Meaning
|-
| 60 || The volume is read-only and may not be mounted read-write.
|-
| 62 || The volume is hidden.
|-
| 63 || The operating system may not automatically assign a drive letter to the volume.
|}

In [[Microsoft]] [[operating system]]s, when using [[Logical Disk Manager#Basic and dynamic disks and volumes|basic disk]] partitioned with [[GUID Partition Table]] (GPT) layout, a '''basic data partition''' ('''BDP''') is any [[partition (computing)|partition]] identified with [[Globally Unique Identifier]] (GUID) of {{mono|EBD0A0A2-B9E5-4433-87C0-68B6B72699C7}}.<ref name=GPTFAQ>{{cite web|url=http://www.microsoft.com/whdc/device/storage/GPT_FAQ.mspx|work=Windows and GPT FAQ|title=Windows GPT Implementation}}</ref>

According to Microsoft, the basic data partition is the equivalent to [[master boot record]] (MBR) partition types {{mono|[[Partition type#PID 06h|0x06]]}} ([[FAT16B]]), {{mono|[[Partition type#PID 07h|0x07]]}} ([[NTFS]] or [[exFAT]]), and {{mono|[[Partition type#PID 0Bh|0x0B]]}} ([[FAT32]]).<ref name=GPTFAQ /> In practice, it is equivalent to {{mono|[[Partition type#PID 01h|0x01]]}} ([[FAT12]]), {{mono|[[Partition type#PID 04h|0x04]]}} ([[FAT16]]), {{mono|[[Partition type#PID 0Ch|0x0C]]}} (FAT32 with [[logical block addressing]]), and {{mono|[[Partition type#PID 0Eh|0x0E]]}} (FAT16 with logical block addressing) types as well.

A basic data partition can be formatted with any [[file system]], although most commonly BDPs are formatted with the NTFS, exFAT, or FAT32 file systems. To programmatically determine which file system 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 {{mono|AF9B60A0-1431-4F62-BC68-3311714A69AD}}. This is analogous to the conversion from partition types {{mono|0x01}}, {{mono|0x04}}, {{mono|0x06}}, {{mono|0x07}}, {{mono|0x0B}}, {{mono|0x0C}}, and {{mono|0x0E}} to partition type {{mono|[[Partition type#PID 42h|0x42]]}} on MBR partitioned disks.

Linux used the same partition type GUID for basic data partition as Windows prior to introduction of a Linux specific Data Partition GUID {{mono|0FC63DAF-8483-4772-8E79-3D69D8477DE4}}.<ref name="RodSmithMLpost">{{cite mailing list|last=Smith|first=Rod|title=Need for a Unique Linux GPT GUID Type Code|mailing-list=bug-parted|date=June 23, 2011|url=http://lists.gnu.org/archive/html/bug-parted/2011-06/msg00026.html |via=lists.gnu.org |access-date=April 10, 2013}}</ref>

== References ==
{{Reflist}}

== See also ==
* [[Disk partitioning]]
* [[EFI system partition]] (ESP), a reserved partition on GPT disk
* [[Microsoft Reserved Partition]] (MSR), a reserved partition on GPT disk

[[Category:Disk file systems]]
[[Category:Disk partitions]]

{{Compu-storage-stub}}

Microsoft basic data partition - Revision history

imported>Isaidnoway: script-assisted date audit and style fixes per MOS:NUM