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From: rjn@hpfcso.HP.COM (Bob Niland)
Newsgroups: comp.sys.hp
Subject: Re: Disktab for Rewritable optical disk
Message-ID: <7370203@hpfcso.HP.COM>
Date: 11 Sep 90 13:58:20 GMT
References: <1990Sep10.203556.29097@batcomputer.tn.cornell.edu>
Organization: Hewlett-Packard/FSY Ft.Collins,CO,USA
Lines: 45

re: hurf@theory.tn.cornell.edu (Hurf Sheldon)...

>	We have an HP 650/A drive to try while our 20GB
>	disk farms are delayed - what disktab entry or
>	options to mkfs are appropriate? 

###############################################
# The HP Series 6300 model 650/A is a Magneto-optical
# drive with 2 surfaces and uses the SCSI interface.
# The mechanism can only access one surface at a time.
# The media is removeable (5.25"), with an estimated
# shelf life of 10 years. Media has a write-protect tab.
# Total formatted capacity: 322.1 MBytes / surface; 644.2 MBytes total
# Physical Geometry:
#	Bytes / sector    1024
#	Sectors / track   17
#	Cylinders         18504+
hpS6300.650A|hpS6300.650A_noswap|HPS6300.650A_noswap:\
        :No swap:ns#17:nt#12:nc#1542:\
        :s0#314568:b0#8192:f0#1024:\
        :se#1024:rm#2400:
#####################################################
# It is not recommended to use the 650/A drive as the
# root device.  For convenience an entry is provided
# in case the user requires it for special situations.
hpS6300.650A_32MB:\
        :32 MBytes swap:ns#17:nt#12:nc#1381:\
        :s0#281724:b0#8192:f0#1024:\
        :se#1024:rm#2400:

>	Any further info would be a help as we not only
>	 want to use it (on our 345) as a native disk but
>	 need to know if we can read the same media written on an
>	AlpaTronix PC Optical disc under DOS. 

Can't help you there. If the Alpa is not "Continuous Composite", forget it.
	
>	Q: DOes the 20GB farm use the same format as the 
>	   650/A?

Yes.

Regards,                                              Hewlett-Packard
Bob Niland      Internet: rjn@hpfcrjn.FC.HP.COM       3404 East Harmony Road
                UUCP: [hplabs|hpfcse]!hpfcrjn!rjn     Ft Collins CO 80525-9599