Article View: comp.sys.ibm.pc
Article #8916Re: Input needed on XT Hard Disk
From: Keith Ericson
Date: Fri, 19 Jan 1990 18:08
Date: Fri, 19 Jan 1990 18:08
34 lines
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1876 bytes
In article <7565@shlump.nac.dec.com> simon@hpstek.dec.com (Curiosier and curiosier...) writes:
>
>In article <1400021@hp-ptp.HP.COM>, pault@hp-ptp.HP.COM (Paul_Taira) writes...
>
>...I run Maxtor 2190(?) 127 Mb partitioned on my 3 year old XT
>clone. Actually, with a modern controller I could get 159 Mb, but my
>controller BIOS knows only about 1024 cylinder, while the drive has 1124
>cyl.
If that "modern controller" were an Adaptec 2372B (or C I think they're up
to now?) you could get
1224 x 15 x 26 x 512 = 244+ Megabytes of FORMATTED capacity
^\ ^\ ^\ ^\
| | | |
| | | +-- bytes/sector
| | |
| | +--RLL sectors/track
| |
| +-- heads (or tracks/cylinder)
|
+-- cylinders (sector translation allows DOS to access more
than it's 10-bit = 1024 cylinder limit)
Other manufacturer's controllers may also have the sector translation
capability: my experience is limited - due to good results: why fix what
ain't broken - to Adaptec.
The MAXTOR drives, while not specified to accommodate RLL, are high quality
products and exceed the manufacturer's specifications in this regard. We
regularly use Maxtor XT-1085's as "standard issue" in this same configuration
and also have many XT-2190's so used.
kEITHe
Technical Details
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<6706@tekgvs.LABS.TEK.COM>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!snorkelwacker!mit-eddie!uw-beaver!zephyr.ens.tek.com!tekcrl!tekgvs!keitheReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!snorkelwacker!mit-eddie!uw-beaver!zephyr.ens.tek.com!tekcrl!tekgvs!keithe From: keithe@tekgvs.LABS.TEK.COM (Keith Ericson) Newsgroups: comp.sys.ibm.pc Subject: Re: Input needed on XT Hard Disk Message-ID: <6706@tekgvs.LABS.TEK.COM> Date: 19 Jan 90 18:08:09 GMT References: <7565@shlump.nac.dec.com> Reply-To: keithe@tekgvs.LABS.TEK.COM (Keith Ericson) Organization: Tektronix, Inc., Beaverton, OR. Lines: 34