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  2. 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 ...

  3. CHKDSK - Wikipedia

    en.wikipedia.org/wiki/CHKDSK

    In computing, CHKDSK (short for "check disk") is a system tool and command in DOS and Microsoft Windows (and related operating systems), as well as Digital Research FlexOS, [1] IBM/Toshiba 4690 OS, [2] IBM OS/2. [3] It verifies the integrity of the file system on a volume (usually a partition) and attempts to fix

  4. Commit charge - Wikipedia

    en.wikipedia.org/wiki/Commit_charge

    This is composed of main memory (RAM) and disk (pagefiles). The corresponding performance counter is called "Committed Bytes". Limit is the maximum possible value for Total ; it is the sum of the current pagefile size plus the physical memory available for pageable contents (this excludes RAM that is assigned to non-pageable areas).

  5. Memory leak - Wikipedia

    en.wikipedia.org/wiki/Memory_leak

    where a program can request memory, such as shared memory, that is not released, even when the program terminates; where memory is very limited, such as in an embedded system or portable device, or where the program requires a very large amount of memory to begin with, leaving little margin for leaks

  6. Hard disk drive failure - Wikipedia

    en.wikipedia.org/wiki/Hard_disk_drive_failure

    A hard disk drive failure occurs when a hard disk drive malfunctions and the stored information cannot be accessed with a properly configured computer. A hard disk failure may occur in the course of normal operation, or due to an external factor such as exposure to fire or water or high magnetic fields , or suffering a sharp impact or ...

  7. Clustered file system - Wikipedia

    en.wikipedia.org/wiki/Clustered_file_system

    A shared-disk file system uses a storage area network (SAN) to allow multiple computers to gain direct disk access at the block level.Access control and translation from file-level operations that applications use to block-level operations used by the SAN must take place on the client node.

  8. File system fragmentation - Wikipedia

    en.wikipedia.org/wiki/File_system_fragmentation

    File segmentation, also called related-file fragmentation, or application-level (file) fragmentation, refers to the lack of locality of reference (within the storing medium) between related files. Unlike the previous two types of fragmentation, file scattering is a much more vague concept, as it heavily depends on the access pattern of specific ...

  9. Hard disk drive - Wikipedia

    en.wikipedia.org/wiki/Hard_disk_drive

    [19] [failed verification] The capacity of a hard disk drive, as reported by an operating system to the end user, is smaller than the amount stated by the manufacturer for several reasons, e.g. the operating system using some space, use of some space for data redundancy, space use for file system structures.