Microsoft basic data partition

{{Use mdy dates|date=October 2024}}

class="wikitable floatright" |+ Microsoft-defined GPT attribute flags for BDPs{{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}}
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 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 {{mono|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}}

According to Microsoft, the basic data partition is the equivalent to master boot record (MBR) partition types {{mono|0x06}} (FAT16B), {{mono|0x07}} (NTFS or exFAT), and {{mono|0x0B}} (FAT32). In practice, it is equivalent to {{mono|0x01}} (FAT12), {{mono|0x04}} (FAT16), {{mono|0x0C}} (FAT32 with logical block addressing), and {{mono|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|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}}.{{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}}