In computing, the BIOS parameter block, often shortened to BPB, is a data structure in the volume boot record (VBR) describing the physical layout of a data storage volume. On partitioned devices, such as hard disks, the BPB describes the volume partition, whereas, on unpartitioned devices, such as floppy disks, it describes the entire medium. A basic BPB can appear and be used on any partition, including floppy disks where its presence is often necessary; however, certain filesystems also make use of it in describing basic filesystem structures. Filesystems making use of a BIOS parameter block include FAT12 (except for in DOS 1.x), FAT16, FAT32, HPFS, and NTFS. Due to different types of fields and the amount of data they contain, the length of the BPB is different for FAT16, FAT32, and NTFS boot sectors.[1] (A detailed discussion of the various FAT BPB versions and their entries can be found in the FAT article.) Combined with the 11-byte data structure at the very start of volume boot records immediately preceding the BPB or EBPB, this is also called FDC descriptor or extended FDC descriptor in ECMA-107 or ISO/IEC 9293 (which describes FAT as for flexible/floppy and optical disk cartridges).
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In computing, the BIOSparameterblock, often shortened to BPB, is a data structure in the volume boot record (VBR) describing the physical layout of a...
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FAT12 and FAT16 since OS/2 1.0 and DOS 4.0, also known as Extended BIOSParameterBlock (EBPB) (bytes below sector offset 0x024 are the same as for the DOS...
computing, BIOS (/ˈbaɪɒs, -oʊs/, BY-oss, -ohss; Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS) is firmware...
a BDP contains, Microsoft specifies that one should inspect the BIOSParameterBlock that is contained in the BDP's Volume Boot Record. When a Microsoft...
system—especially game software). BIOS runs in the real address mode (Real Mode) of the x86 CPU, so programs that call BIOS either must also run in real mode...
in DOS 1.x), FAT16, FAT32, HPFS and NTFS, the VBR also contains a BIOSParameterBlock (BPB) that specifies the location and layout of the principal on-disk...
volume boot records, up to 59 bytes are occupied for the extended BIOSparameterblock on FAT12 and FAT16 volumes since DOS 4.0, whereas the FAT32 EBPB...
business Ballet Palm Beach, an American professional ballet company BIOSparameterblock, a computing data structure Boridi Airport, Boridi, Papua New Guinea...
depend on the file system at all. Find filesystem parameters to rewrite a valid BIOSparameterblock (analogous to "superblocks" in Unix file systems)...
optionally fix up the drive value (stored at offset 0x019 in the Extended BIOSParameterBlock (EBPB) or at sector offset 0x01FD) in loaded VBRs before passing...
txt. VESA Super VGA BIOS Extension 1.0 (Standard # VS891001) 1 October 1989 VESA BIOS Extension 1.2 VESA BIOS Extension 2.0 VESA BIOS Extension 3.0 Dr....
Volume Boot Records, up to 59 bytes are occupied for the Extended BIOSParameterBlock on FAT12 and FAT16 volumes since DOS 4.0, whereas the FAT32 EBPB...
Disk partition. The boot sector contains the disk boot program and BIOSParameterBlock table which searches for the location of the root directory and IO...
is a 12-sector region that contains the boot records, BIOSparameterblock (BPB), OEM parameters and the checksum sector. (There are two VBR type regions...
DR-DOS MBRs and boot sectors (which also hold the partition table and BIOSParameterBlock, leaving less than 446 respectively 423 bytes for the code) were...
of these are vastly higher than the 128 GB limit in Windows XP SP1. Many BIOS firmware limit the Master Boot Records (MBR) partitions size to 2 TiB, which...
labels, they do not trust some BIOSParameterBlock (BPB) values and recalculate them from other disk geometry parameters in order to work around several...
header for the data area, describing its content (similar to the BIOSparameterblock used by FAT, HPFS and NTFS formatted disks). Each volume descriptor...
partition size to 16 MB for 512 byte sectors and 4 KB clusters. The BIOSParameterBlock (BPB) was introduced with PC DOS 2.0 as well, and this version also...
is shorthand for BIOS interrupt call 13hex, the 20th interrupt vector in an x86-based (IBM PC-descended) computer system. The BIOS typically sets up...
Magazine, June 26, 1984 Phoenix Eagerly Waiting to Clone Next-Generation IBM BIOS, InfoWorld, March 9, 1987 Borland Sidekick ad, Byte, June 1984 Sidekick Boosts...
Interface (UEFI) standard (Unified EFI Forum-proposed replacement for the PC BIOS), it is nevertheless also used for some BIOSs, because of the limitations...
subnetwork. Residual learning re-parameterizes this subnetwork and lets the parameter layers represent a "residual function" F ( x ) := H ( x ) − x {\textstyle...
stage, the BIOS firmware is called. IBM PC compatible hardware is one architecture Linux is commonly used on; on these systems, the BIOS plays an important...
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