Rebuilding the NEXT PC on which the first Web page was published...

[Howard Cunningham]

Hi

They are 130MM which is close enough to 5 1/4"


hc


Howard Cunningham, MCP
howardc at macrollc.com - personal
For technical support, send an email to service at macrollc.com or call 703-359-9211 (24/7)


-----Original Message-----
From: Rob Seastrom [mailto:rs at seastrom.com] 
Sent: Tuesday, April 30, 2013 9:33 PM
To: Howard Cunningham
Cc: Louis Mamakos; tacos at amrad.org
Subject: Re: Rebuilding the NEXT PC on which the first Web page was published...


Hi Howard,

In your attached photo I see a plastic cartridge that measures 5.25 inches, with a somewhat smaller than 5.25 inch disk enclosed therein.

The latest generation "5.25" MO disks have 130mm media.
http://pro.sony.com/bbsccms/assets/files/cat/datastorage/brochures/5_25_MO_Spec_Sheet.pdf

Given the history of a couple of generations/sizes of backward compatibility in the MO world, I can't imagine that an opportunity for change has come about.

As an aside, this neighborhood seems to be a popular size for things that fit inside a nominally 5.25" enclosure.  5.25" floppies, for instance, measure 133mm.

Don't tell anyone that I let you in on this, but I'll bet your 40m half wave dipole measures a little less than 20m in length too.  ;-)

-r

Howard Cunningham <howardc at macrollc.com> writes:

> Hi
>
> I have eight of these MO cartridges on my shelf.  Attached is an image of one of these with the closest thing to a caliper that I have....
>
> You will note that it is 5 1/4" ...
>
> hc
>
>
> Howard Cunningham, MCP
> howardc at macrollc.com - personal
> For technical support, send an email to service at macrollc.com or call 
> 703-359-9211 (24/7)
>
>
> -----Original Message-----
> From: Rob Seastrom [mailto:rs at seastrom.com]
> Sent: Tuesday, April 30, 2013 8:35 PM
> To: Howard Cunningham
> Cc: Louis Mamakos; tacos at amrad.org
> Subject: Re: Rebuilding the NEXT PC on which the first Web page was published...
>
>
> get your calipers out :)
>
> -r
>
>
> Howard Cunningham <howardc at macrollc.com> writes:
>
>> Hi
>>
>> The NeXT  MO disks were 5 1/4" disks and held 256 MB
>>
>> hc
>>
>>
>> Howard Cunningham, MCP
>> howardc at macrollc.com - personal
>> For technical support, send an email to service at macrollc.com or call
>> 703-359-9211 (24/7)
>>
>>
>> -----Original Message-----
>> From: tacos-bounces+howardc=macrollc.com at amrad.org
>> [mailto:tacos-bounces+howardc=macrollc.com at amrad.org] On Behalf Of 
>> Rob Seastrom
>> Sent: Tuesday, April 30, 2013 7:57 PM
>> To: Louis Mamakos
>> Cc: tacos at amrad.org
>> Subject: Re: Rebuilding the NEXT PC on which the first Web page was published...
>>
>>
>> Louis Mamakos <louie at transsys.com> writes:
>>
>>> No, the original is on an 8 inch magneto-optical disk cartridge.
>>
>> Nominally 130mm (a scant 5 1/8") not 8"...
>>
>>> I used to
>>> have a NeXT cube on my desk, and that's the computer that I wrote 
>>> the UNIX reference implementation of NTP on.
>>
>> You had me there for a minute on the timeline until I realized you meant v1 not "v0" (attributed to you and Mike Petry).
>>
>> -r
>>
>> _______________________________________________
>> Tacos mailing list
>> Tacos at amrad.org
>> https://amrad.org/mailman/listinfo/tacos