Aboot flagwill be a 1-byte value in a non-extended partition report, within a expert boot record. It seems at the beginning of a partition report, as the value 0x80. A value of 0x00 indicates the partition will not have the boot flag fixed.12Any other value is certainly incorrect.
Its primary function is certainly to indicate to a MS-DOS/MS Windows-type boot loader which partition to boot. In some cases it is usually utilized by Windows XP/2000 to designate the energetic partition the letter 'C:'.3Theenergetic partitionis usually the partition where the boot flag is definitely set. 2 and Windows allow only one boot partition to end up being arranged with the boot flag.4
Additional boot loaders utilized by third-party boot managers (such as GRUB or XOSL) can be installed to a expert boot record and can boot main or prolonged partitions, which perform not possess the boot flag established.
There are many drive editors that can enhance the boot flag, like as Disk Management in Windows5and fdisk.
Feb 15, 2012 - Simple definitions: Program – A static set of instructions. /liSimple Boot Flag (SBF) is a 3-bit flag in CMOS BIOS. To any particular specification and take less than 64K of memory. (Possibly linked to above bug) VIA APIC routing is currently broken. Boot with 'noapic'. Simple boot flag support. The SBF specification is an x86 BIOS extension that allows improved system boot speeds.
Some buggy BIOSes check if the bootflag of at minimum one partition is definitely set. In any other case they ignore the device in boot-order. So even if the bootloader will not need the flag, it offers to become established to start the bootcode from BIOS.citation needed
See furthermoreedit
Referralsedit
- ^'The MBR (get better at boot report) and the Partition Furniture'.DIY DataRecovery. Retrieved2014-12-14.
- ^'Expert Boot Record'.Microsoft TechNet. Gathered2015-04-20.
0x01BAge. Boot Indicator. Indicates whether the volume is usually the active partition. Lawful values include: 00. Do not make use of for booting. 80. Active partition.
- ^Goodell, Dan. 'Repairing Windows 2000/XP Drive Words'.Understanding MultiBooting and Booting Home windows from an Prolonged Partition. Retrieved2014-12-14.
- ^'Parted Consumer's Manual - 4. Shoe Loaders'.GNU Task. Retrieved2014-12-14.
- ^'Mark a partition as energetic'.Microsoft. Retrieved2014-12-14.
Gathered from 'https://en.wikipedia.org/w/index.php?name=Bootflagamp;oldid=818128949'