Index | Notes | Examples


Loads a program into the upper memory area. Loading a program into the upper memory area leaves more room in conventional memory for other programs. (For more information about optimizing memory, see the chapter "Making More Memory Available" in the MS-DOS User's Guide.) Syntax LOADHIGH [drive:][path]filename [parameters] To specify the region(s) of memory into which to load the program, use the following syntax: LOADHIGH [/L:region1[,minsize1][;region2[,minsize2]...] [/S]] [drive:][path]filename [parameters] You can abbreviate LOADHIGH as LH. Switches /L:region1[,minsize1][;region2[,minsize2]...] Specifies one or more regions of memory into which to load the program. If /L is not used, MS-DOS loads the program into the largest free upper-memory block (UMB) and makes all other UMBs available for the program's use. You can use the /L switch to load the program into a specific region of memory or to specify which region(s) the program can use. To load the program into the largest block in a specific region of upper memory, specify the region number after the /L switch. For example, to load the program into the largest free block in region 4, you would type /L:4. (To list the free areas of memory, type MEM /F at the command prompt.) When loaded with the /L switch, a program can use only the specified memory region. Some programs use more than one area of memory; for those programs, you can specify more than one region. (To find out how a particular program uses memory, use the MEM /M command and specify the program name as an argument.) To specify two or more regions, separate the block numbers with a semicolon (;). For example, to use blocks 2 and 3, you would type /L:2;3. Normally, MS-DOS loads the program into a UMB in the specified region only if that region contains a UMB larger than the program's load size (usually equal to the size of the executable program file). If the program requires more memory while running than it does when loaded, you can use the minsize parameter to ensure that the program will not be loaded into a UMB that is too small for it. If you specify a value for minsize, MS-DOS loads the program into that region only if it contains a UMB that is larger than both the program's load size and the minsize value. /S Shrinks the UMB to its minimum size while the program is loading. Using this switch makes the most efficient use of memory. This switch is typically used only by the MemMaker program, which can analyze a program's memory use to determine whether the /S switch can safely be used when loading that program. This switch can be used only in conjunction with the /L switch and affects only UMBs for which a minimum size was specified. Parameters [drive:][path]filename Specifies the location and name of the program you want to load. parameters Specifies any command-line information required by the program. Related Commands For information about loading device drivers into upper memory, see the <DEVICEHIGH> command. For information about using the MemMaker program to move programs to the upper memory area, see the <MEMMAKER> command.
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