Article View: comp.sys.ibm.pc.hardware
Article #20147RE: RLL & MFM
From: Jan A. Nijhuis
Date: Tue, 12 Jan 1993 21:16
Date: Tue, 12 Jan 1993 21:16
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From: ICVXV@ASUACAD.BITNET (S.Visveshwara) Newsgroups: comp.sys.ibm.pc.hardware Subject: RLL & MFM Hi, I would like some information regarding the difference between the above. ========================================================== One is from the Bronze Age the other is from the Iron Age. ;-) They are essentially the same thing. RLL (Run Lengh Limited) is a variation of MFM (Modified Frequency Modulation) MFM uses 17 Sectors/Track, RLL uses about 25, Advanced RLL (ARLL) uses about 33 Sectors/Track. It's just a scheme to pack more data into a given area. -- Jan A. Nijhuis, nijhuis@isg.llnl.gov Two wrongs do not make a right, but three will get you back on the freeway.
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Path: arc1-ca.pugleaf.net!sparky!uunet!usc!howland.reston.ans.net!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!ames!sun-barr!lll-winken!isg.llnl.gov!nijhuis From: nijhuis@isg.llnl.gov (Jan A. Nijhuis) Newsgroups: comp.sys.ibm.pc.hardware Subject: RE: RLL & MFM Message-ID: <145880@lll-winken.LLNL.GOV> Date: 12 Jan 93 21:16:32 GMT Sender: usenet@lll-winken.LLNL.GOV Distribution: na Organization: Lawrence Laboratory Livermore, CA Lines: 24 Nntp-Posting-Host: isg.llnl.gov