Dos keeps a bunch of lists internally. Thise are listed below; see under
"Dos List formats" under "Dos Tables" menu to see the format for each list.

Memory control block list.
DOS 4.x data segment subsegment control blocks.
Data at start of STACKS code segment (if present).
Array elements in STACKS data segment.
SHARE.EXE hooks (DOS 3.1-4.01).
DOS 2.x system file tables.
DOS 3.x system file tables and FCB tables.
DOS 4+ system file tables and FCB tables.
Sharing record.
SHARE.EXE lock record.
Drive info table
Device driver header.
DOS 2.x disk buffer.
DOS 3.x disk buffer.
DOS 4.00 disk buffer info.
DOS 4.01 (from UR 25066 on) disk buffer info.
DOS 4.x disk buffer chain head.
DOS 4.x disk buffer.