Re:
>
>         OK, agreed, but can aynone give me an answer to my original question, which is "How do I tell exactly where a file resides      on a drive, is there an address location or something of that nature and if so how does it relate to the layout of the drive?"

:run fscheck.mpexl.telesup

DE <filename>



Example, using something <plug> friendlier:

De-Frag/X> de catalog.pub.sys

File: /SYS/PUB/CATALOG  (18 extents)

   Ldev   Disk Page#   # Pages  File Page #
   ----   ----------   -------  -----------
       1      29,676        16            0 ,
       1      29,692        16           16
       1      30,962        16           32
       1      31,010        16           48
       1      31,174        16           64 ,
       1      31,190        16           80 ,
       1      31,206        16           96 ,
       1      31,222        16          112 ,
       1      31,238        16          128
       1      31,279        16          144
       1      31,312        16          160 ,
       1      31,328        16          176
       1      31,479        16          192 ,
       1      31,495        16          208 ,
       1      31,511        16          224 ,
       1      31,527        16          240 ,
       1      31,543        16          256
       1      26,313         2          272

   # extents in file:           18
   # pages in file:    274 pages;  1.0 MBs
% fragmented:    2.5