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23 Cards in this Set
- Front
- Back
Autoexec.bat
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A startup text file once used by DOS and used by Windows to provide backward compatibility. It executes commands automatically during the boot process and is used to create a16-bit environment.
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batch file
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A text file containing a series of OS commands. Autoexec.bat is a batch file.
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bootable disk
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For DOS and Windows, a floppy disk that can upload the OS files necessary for computer startup. For DOS or Windows 9x/Me, it must contain the files Io.sys, Msdos.sys, and Command.com.
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CD (change directory) command
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A command given at the command prompt that changes the default directory, for example CD \Windows.
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conventional memory
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DOS and Windows 9x/Me memory addresses between 0 and 640 K. Also called base memory.
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DOS box
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A command window.
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emergency startup disk (ESD)
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Another term for a rescue disk.
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Emm386.exe
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A DOS and Windows 9x/Me utility that provides access to upper memory for 16-bit device drivers and other software.
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extended memory
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Memory above 1024 K used in a DOS or Windows 9x/Me system.
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external commands
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Commands that have their own program files.
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fragmented file
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A file that has been written to different portions of the disk so that it is not in contiguous clusters.
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hidden file
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A file that is not displayed in a directory list. Whether to hide or display a file is one of the file’s attributes kept by the OS.
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high memory area (HMA)
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In DOS or Windows 9x/Me, the first 64K of extended memory.
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Himem.sys
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The DOS and Windows 9x/Me memory manager extension that allowed access to memory addresses above 1 MB.
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internal commands
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Commands that are embedded in the Command.com file.
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RAM drive
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An area of memory that is treated as though it were a hard drive, but works much faster than a hard drive. The Windows 9x/Me startup disk uses a RAM drive. Compare to virtual memory.
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rescue disk
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A floppy disk that can be used to start up a computer when the hard drive fails to boot. Also called emergency startup disk (ESD) or startup disk.
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startup disk
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Another term for a rescue disk.
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system disk
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Windows terminology for a bootable disk.
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terminate-and-stay-resident (TSR)
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A program that is loaded into memory and remains dormant until called on, such as a screen saver or a memory resident antivirus program.
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upper memory
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In DOS and Windows 9x/Me, the memory addresses from 640 K up to 1024 K, originally reserved for BIOS, device drivers, and TSRs.
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upper memory block (UMB)
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In DOS and Windows 9x/Me, a group of consecutive memory addresses in RAM from 640 K to 1MB that can be used by 16-bit device drivers and TSRs.
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wildcard
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An * or ? character used in a command line that represents a character or group of characters in a filename or extension.
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