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- Newsgroups: comp.sys.ibm.pc.hardware
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!cbfsb!cbnewsg.cb.att.com!rnichols
- From: rnichols@cbnewsg.cb.att.com (robert.k.nichols)
- Subject: Re: What program tells HD interleave factor?
- Message-ID: <1992Aug23.232113.1451@cbfsb.cb.att.com>
- Summary: Not possible for IDE drives
- Keywords: format, IDE
- Sender: news@cbfsb.cb.att.com
- Organization: AT&T
- References: <1992Aug19.015845.7696@ra.msstate.edu> <1992Aug23.003408.220@weyrich.UUCP>
- Distribution: na
- Date: Sun, 23 Aug 1992 23:21:13 GMT
- Lines: 20
-
- In article <1992Aug23.003408.220@weyrich.UUCP> you write:
- >In article <1992Aug19.015845.7696@ra.msstate.edu> cbb1@ra.msstate.edu (Chris B. Borchert) writes:
- >>Can someone tell me a good program to determine the optimum interleave
- >>factor for any HD? I have used HDTEST 1.28 (and it works great!), but
- >>it says it only runs on RLL drives. I cannot find a newer version of
- >>this program. Are there others for MFM and IDE drives?
- >
- >Spinrite will do this for MFM and RLL; I don't know about IDE's. [My version
- >of spin-rite predates IDE's].
- ...
-
- This is essentially impossible for IDE drives because the controller
- remaps the cyl/head/sector request into its own internal configuration.
- For example, I access my Seagate ST3120A as 1024 cyl, 12 heads, 17 sectors.
- Internally it's got 2 platters (3 heads + 1 servo head) and a variable
- number of sectors/track. Try to figure out an interleave for THAT! It
- would have to change track-by-track, depending on the number of sectors.
-
- Bob Nichols
- rnichols@ihlpm.ih.att.com
-