Path: utzoo!censor!becker!bdb
From: bdb@becker.UUCP (Bruce Becker)
Newsgroups: unix-pc.general
Subject: Re: Optical disk for a unix-pc, is it possible?
Message-ID: <1286@becker.UUCP>
Date: 8 Dec 89 05:32:50 GMT
References: <614@mbph.UUCP> <1037@icus.islp.ny.us> <1226@becker.UUCP> <617@uncle.UUCP>
Reply-To: bdb@becker.UUCP (Bruce Becker)
Distribution: unix-pc
Organization: G. T. S., Toronto, Ontario
Lines: 33

In article <617@uncle.UUCP> jbm@uncle.UUCP (John B. Milton) writes:
|In article <1226@becker.UUCP> bdb@becker.UUCP (Bruce Becker) writes:
|>In article <1037@icus.islp.ny.us> lenny@icus.islp.ny.us (Lenny Tropiano) writes:
|>|[...]
|>	If a WD2010 controller is used, then one can
|>	use up to 2048 cylinders, for 134,217,728
|>	bytes, though I've never seen a ST506/MFM
|>	drive with that many cylinders.
|
|The actual limit with the WD2010 is (from /usr/include/gdisk.h):
|gdisk.h:#define HDMAXCYL	1400	/* support a maximum of 1400 cylinders */
|This is a compiled into the kernel value, we can't change it.

	Those of you with kernel source (8^) can
	grep for the use of this constant so as to
	discover where to patch... please post...

	It seems that Philips has a ST506 thingy which
	may be several spindles that looks like a very
	large single drive. This information comes from
	a German developer who makes disk interface
	hardware for the Amiga, etc.

	Granted the limited acees one might have to such
	a device - I still want SCSI, things would be easier.
	So where is the ST506-to-SCSI adapter card we all need?

Cheers,
-- 
   ^^ 	 Bruce Becker	Toronto, Ont.
w \**/	 Internet: bdb@becker.UUCP, bruce@gpu.utcs.toronto.edu
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