fanj@remb6489.wpd.sgi.com (Fan Jiao) (05/25/90)
I posted a msg asking for help on the issues of MFM and RLL. And I got several very helpful responses and pointers. And I'd like to share with you. I have Micropolis M1335 and M1323. The parameters are: 1024 Cyl X 8 Heads X 17 Sectors/1024 Cyl X 4 Heads X 17 Sectors. I got a new WD1006V-SR2 to re-format Micropolis' 71Meg(1335) and 34Meg(1323). I got 107 Meg from the 1335, while 43 Meg, 1323(I could not find any closer match to 1024X4; instead I used 820X4). I ran SI on C:, and the index is 3.6, compared with 2.7 in MFM 3:1 case. I also did CORETEST. The transfer rate now is 672 KB/sec, while it was 162 before. -- Fan Jiao(Chiao) x 1615 | M/S 9U-510
davidsen@sixhub.UUCP (Wm E. Davidsen Jr) (05/26/90)
In article <60997@sgi.sgi.com> fanj@remb6489.wpd.sgi.com (Fan Jiao) writes: | I got a new WD1006V-SR2 to re-format Micropolis' 71Meg(1335) and 34Meg(1323). | I got 107 Meg from the 1335, while 43 Meg, 1323(I could not find any closer | match to 1024X4; instead I used 820X4). But you can have a perfect match... set the drive type to one and fill in the blanks. -- bill davidsen - davidsen@sixhub.uucp (uunet!crdgw1!sixhub!davidsen) sysop *IX BBS and Public Access UNIX moderator of comp.binaries.ibm.pc and 80386 mailing list "Stupidity, like virtue, is its own reward" -me
phil@pepsi.amd.com (Phil Ngai) (05/26/90)
In article <60997@sgi.sgi.com> fanj@remb6489.wpd.sgi.com (Fan Jiao) writes: |I got a new WD1006V-SR2 to re-format Micropolis' 71Meg(1335) and 34Meg(1323). |I got 107 Meg from the 1335, while 43 Meg, 1323(I could not find any closer |match to 1024X4; instead I used 820X4). You can customize the geometry, it's an entry on the menu you get when you run cc00:5. |I ran SI on C:, and the index is 3.6, compared with 2.7 in MFM 3:1 case. |I also did CORETEST. The transfer rate now is 672 KB/sec, while it was |162 before. Did you set 1:1 interleave? You should get about 798 Kb/s. -- Phil Ngai, phil@amd.com {uunet,decwrl,ucbvax}!amdcad!phil The Green Movement has Red Roots.
del@fnx.UUCP (Dag Erik Lindberg) (05/29/90)
In article <60997@sgi.sgi.com> fanj@remb6489.wpd.sgi.com (Fan Jiao) writes:
=
=I posted a msg asking for help on the issues of MFM and RLL. And I got several
=very helpful responses and pointers. And I'd like to share with you.
=
=I have Micropolis M1335 and M1323. The parameters are:
=1024 Cyl X 8 Heads X 17 Sectors/1024 Cyl X 4 Heads X 17 Sectors.
=
=Fan Jiao(Chiao)
=x 1615 | M/S 9U-510
What I want to know is, what is this junk (and all the 'helpful' replies)
doing in comp.sys.ibm.pc.programmer?
--
del AKA Erik Lindberg
uunet!pilchuck!fnx!del