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  2. TestDisk - Wikipedia

    en.wikipedia.org/wiki/TestDisk

    TestDisk reads sectors on the storage device to determine if the partition table or filesystem on it requires repair (see next section). TestDisk is able to recognize the following partition table formats: [2] Apple partition map; GUID Partition Table; Humax; PC/Intel Partition Table (master boot record) Sun Solaris slice; Xbox fixed ...

  3. Boot sector - Wikipedia

    en.wikipedia.org/wiki/Boot_sector

    When GRUB is installed on a hard disk, boot.img is written into the boot sector of that hard disk. boot.img has a size of only 446 bytes. A boot sector is the sector of a persistent data storage device (e.g., hard disk , floppy disk , optical disc , etc.) which contains machine code to be loaded into random-access memory (RAM) and then executed ...

  4. Emergency repair disk - Wikipedia

    en.wikipedia.org/wiki/Emergency_Repair_Disk

    In Windows 2000, an ERD can be created by clicking "Backup" under "System Tools" (Start->Programs->Accessories->System Tools->Backup). It can be used for the following repair functions: Inspect and repair the startup environment. Verify the Windows 2000 system files and replace missing or damaged files. Inspect and repair the boot sector. [5]

  5. Windows Boot Manager - Wikipedia

    en.wikipedia.org/wiki/Windows_Boot_Manager

    It replaced the NTLDR present in older versions of Windows. The boot sector or UEFI loads the Windows Boot Manager (a file named BOOTMGR on either the system or the boot partition), accesses the Boot Configuration Data store and uses the information to load the operating system through winload.exe or winresume.exe. [2]

  6. Volume boot record - Wikipedia

    en.wikipedia.org/wiki/Volume_boot_record

    The boot code in the VBR can assume that the BIOS has set up its data structures and interrupts and initialized the hardware. The code should not assume more than 32 KB of memory to be present for fail-safe operation; [1] if it needs more memory it should query INT 12h for it, since other pre-boot code (such as f.e. BIOS extension overlays, encryption systems, or remote bootstrap loaders) may ...

  7. Master boot record - Wikipedia

    en.wikipedia.org/wiki/Master_boot_record

    Versions of Windows more recent than Windows XP support the larger sector sizes, as well as Mac OS X, and Linux has supported larger sector sizes since 2.6.31 [20] or 2.6.32, [21] but issues with boot loaders, partitioning tools and computer BIOS implementations present certain limitations, [22] since they are often hard-wired to reserve only ...

  8. Booting - Wikipedia

    en.wikipedia.org/wiki/Booting

    A bootable MBR device is defined as one that can be read from, and where the last two bytes of the first sector contain the little-endian word AA55h, [nb 6] found as byte sequence 55h, AAh on disk (also known as the MBR boot signature), or where it is otherwise established that the code inside the sector is executable on x86 PCs. The boot ...

  9. BIOS parameter block - Wikipedia

    en.wikipedia.org/wiki/BIOS_parameter_block

    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.)