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| IBMBIO.CO |
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| The first file loaded from disk during boot, it contains the extensions to the ROM BIOS and serves exactly the same purpose as IO.SYS and is part of PC-DOS and earlier versions of MS-DOS. |
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| IBMDOS.COM |
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Contains the primary DOS routines. Loaded by IBMBIO.COM, it in turn loads COMMAND.COM.
See: COMMAND.COM, IBMBIO.COM, Routine, and Subroutine. |
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| IDE (Integrated Drive Electronics) |
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A type of hard disk drive interface in which the controller electronics reside on the drive itself, eliminating the need for a separate adapter card. IDE family (IDE, Enhanced IDE, and AT Attachment (ATA)), offers advantages such as look-ahead caching to increase overall performance. Besides the IDE family there are several alternative interfaces: the SCSI (pronounced scuzzy) family (or SPI (SCSI Parallel Interface)), (SPI-1 through to 5 (or Ultra through to 5)), SAS (Serial Attached SCSI); Fibre Channel. Each has its own peculiarities and advantages.
Note: IDE and Parallel Advanced Technology Attachment (PATA) hard disk drives are not synonyms. |
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| Initialise |
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| In Disk Management, it is the process of detecting a disk or volume and assigning it a status, e.g., healthy, type, dynamic or basic. |
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| IO.SYS |
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The first file loaded from disk during the boot, yet one of several essential hidden, read-only DOS/Windows 9x & Millennium, system files required by the Bootstrap Loader to boot the computer. IO.SYS contains extensions to the ROM BIOS. The primary purpose of the boot sector on the boot hard disk drive is to load IO.SYS into memory and transfer control to it. IO.SYS then loads the hardware interfacing routines that non-Windows NT family operating systems rely on, and then loads MSDOS.SYS.
See: Bootstrap Loader, and Windows NT-Based Startup Phases.
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