.d dpb 4b8:c4
dpb_drive: 07
dpb_unit: 07
dpb_driver_addr: #0798:0000
dpb_next_dpb: #04b8:00e0
dpb_cbSector: 0200
dpb_first_FAT: 0001
dpb_toggle_time: 00000000
dpb_hVPB: 0012
dpb_media: f8
dpb_flags: 20
dpb_drive_lock: 0000
dpb_strategy2: #07a0:139c
##.m 04b8:0c4
*har par cpg va flg next prev link hash hob hal
0003 %feaef04c 00000400 %fe6ef000 001 0002 0023 0000 0000 0003 0000 =0000
hob har hobnxt flgs own hmte sown,cnt lt st xf
0003 0003 fec5 0000 ffec 0000 0000 00 01 00 00 vmkrhrw
pvmli cs eip phlock cpg va flg hptda hob sig csig
%fe82e4c4 002d 0a6800a5 %ac22403c 0001 %fe83c000 0005 024b 0003 ea9f ea9f
##dd %(4b8:0) - 10 l8
%fe6f1638 00000000 ff360498 2000fe6f 000001c5
%fe6f1648 00000000 001c0798 020004b8 00000001
##dd %(4b8:0) - 10-4+1c4 l8
%fe6f17f8 00000000 00000000 ff9604b8 0000000a
%fe6f1808 ff46000c 000014f8 00d020c8 ff46000c
##.mo ff96
ff96 dpb
Notes:
The DPB may be located from the VPB.
The DPB segment has a unique owner ID, which may be determined using the .M command.. In the case of the VPB segment it is allocated from the kernel resident heap, so the true owner Id is found in the heap header (or its extension - the trailer).
For a description of the DPB fields see the Driver Parameter Block (DPB) in the System Reference.