original date 09/29/89
 I have a question concerning the proper interleave for various SEAGATE
hard drives. I will be discussing the st-225 & the st-251 used in various
xt and xt clone computers. I have found that 4 seems to be most efficient
for st-225's in our 10 mhz. xt clones. and 3 for the st-251 in a 10 mhz xt
clone. BUT yesterday I installed a st-251 in a IBM  PC and after several
hours it gave me errors while using XTREE PRO. It seemed to have trouble
reading the disk ,but when I pressed "c" for cancel or "r" for retry the
disk read just continued. The disk was formatted with SPEEDSTOR 5.5 and is
running under ms-dos 3.20. the controller is a WD wx2 with a super formatter
bios.(This company for now has stayed with MS-DOS 3.20 because they own it
and because it allows backup and restore from system to system--- I know
that MS-DOS 3.3 would make life easier but.....
Now to get to my question. Is it possible that an interleave of 4 would
work better on such a slow (4.77mhz) cpu? or am I mistaken? Their payroll
program is on  this and I don't want problems. Also could you comment on
my other choices of the proper interleave. BTW I formatted a ST-225 with
the seagate parameters and the last one "3" makes the drive real slow  ,
real,real slow! WALTER F. DE GROOT    thank you