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  2. Hard disk drive failure - Wikipedia

    en.wikipedia.org/wiki/Hard_disk_drive_failure

    Data from a failed drive can sometimes be partially or totally recovered if the platters' magnetic coating is not totally destroyed. Specialized companies carry out data recovery, at significant cost. It may be possible to recover data by opening the drives in a clean room and using appropriate equipment to replace or revitalize failed ...

  3. Abort, Retry, Fail? - Wikipedia

    en.wikipedia.org/wiki/Abort,_Retry,_Fail?

    In CP/M, attempting to read a floppy disk drive with the door open would hang until a disk was inserted and the disk drive door was closed (very early disk hardware did not send any kind of signal until a disk was spinning, and a timeout to detect the lack of signal required too much code on these tiny systems). Many users of CP/M became ...

  4. Bad sector - Wikipedia

    en.wikipedia.org/wiki/Bad_sector

    Hard disk reader. A bad sector in computing is a disk sector on a disk storage unit that is unreadable. Upon taking damage, all information stored on that sector is lost. When a bad sector is found and marked, the operating system like Windows or Linux will skip it in the future.

  5. Microsoft Drive Optimizer - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Drive_Optimizer

    Prior to the Windows Vista release, only one volume could be analyzed or defragmented at a time and only one instance could run. [8] Only local volumes can be defragmented; network volumes are not supported. [8] The GUI version prior to Windows Vista cannot be scheduled. However, the command line utility since Windows XP and later can be scheduled.

  6. Disk formatting - Wikipedia

    en.wikipedia.org/wiki/Disk_formatting

    A block, a contiguous number of bytes, is the minimum unit of storage that is read from and written to a disk by a disk driver.The earliest disk drives had fixed block sizes (e.g. the IBM 350 disk storage unit (of the late 1950s) block size was 100 six-bit characters) but starting with the 1301 [8] IBM marketed subsystems that featured variable block sizes: a particular track could have blocks ...

  7. Drive letter assignment - Wikipedia

    en.wikipedia.org/wiki/Drive_letter_assignment

    Assign the drive letter A: to the first floppy disk drive (drive 0), and B: to the second floppy disk drive (drive 1). If only one physical floppy is present, drive B: will be assigned to a phantom floppy drive mapped to the same physical drive and dynamically assigned to either A: or B: for easier floppy file operations.

  8. Advanced Format - Wikipedia

    en.wikipedia.org/wiki/Advanced_Format

    Many host computer hardware and software components assume the hard drive is configured around 512-byte sector boundaries. This includes a broad range of items including chipsets, operating systems, database engines, hard drive partitioning and imaging tools, backup and file system utilities as well as a small fraction of other software applications.

  9. Emergency repair disk - Wikipedia

    en.wikipedia.org/wiki/Emergency_Repair_Disk

    Note: The emergency repair disk is not to be confused with a standard boot diskette as it cannot be used alone. Unlike the ERD in Windows NT 4.0, the Windows 2000 ERD does not store registry information. Rather, Windows creates a copy of registry files in the \Winnt\Repair\RegBack directory when the ERD is created. [2] The ERD is not bootable.