Operating Systems 1 min read

UMB

Published April 30, 1998 12:00 am

Short for upper memory block, a block of memory in the DOS upper memory area (UMA). UMBs are allocated and managed by a special memory manager such as EMM386.EXE, and can be used for TSRs and device drivers.

Was this Article helpful? Yes No

Thank you for your feedback. 0% 0%

About the author

Webopedia Staff

Since 1995, more than 100 tech experts and researchers have kept Webopedia’s definitions, articles, and study guides up to date. For more information on current editorial staff, please visit our About page.