Category: <b>DOS kernel</b>
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<pre><b>INT 21 - DOS 2+ - RESIZE MEMORY BLOCK</b>

	AH = 4Ah
	BX = new size in paragraphs
	ES = segment of block to resize
Return: CF clear if successful
	CF set on error
	    AX = error code (07h,08h,09h) (see <a href=../../it/80/16.html>#01680</a> at AH=59h/BX=0000h)
	    BX = maximum paragraphs available for specified memory block
Notes:	under DOS 2.1-6.0, if there is insufficient memory to expand the block
	  as much as requested, the block will be made as large as possible
	DOS 2.1-6.0 coalesces any free blocks immediately following the block
	  to be resized
SeeAlso: AH=48h,AH=49h,AH=83h
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