A somewhat broader search found the 1984 RT-11 System Release Notes with the following:
1.4.2.4 Logical Disk Subsetting Handler (LD) - The logical disk subsetting handler lets you define logical disks, which are subsets of physical disks. You define logical disks by assigning a logical disk unit number to a file on a physical disk. You can then use the logical disk as though it were a physical disk.
AA-5286F-TC-T1_RT-11_System_Release_Notes_Jul84.pdf (bitsavers.org) <http://www.bitsavers.org/pdf/dec/pdp11/rt11/v5.1_Jul84/AA-5286F-TC-T1_RT-11…> p15/102
Suggests DEC had not yet adopted the term ?partition? for a segment of a disk
Tom
-----Original Message-----
From: Tom Gardner [mailto:tom94022 at comcast.net]
FWIW a Google search: "partition site:http://www.bitsavers.org/pdf/dec/pdp11/rt11" returns no relevant hits prior to 1983
I suspect that ESDI and MFM controllers emulating RL/RK disks are also later than 1983
Tom
-----Original Message-----
From: Zane Healy [ <mailto:healyzh at avanthar.com> mailto:healyzh at avanthar.com]
Sent: Monday, January 31, 2022 12:40 PM
To: Paul Koning; General Discussion: On-Topic and Off-Topic Posts
Cc: <mailto:t.gardner at computer.org> t.gardner at computer.org; Tom Gardner
Subject: Re: Origin of "partition" in storage devices
On Jan 31, 2022, at 11:28 AM, Paul Koning via cctalk < <mailto:cctalk at classiccmp.org> cctalk at classiccmp.org> wrote:
>
> Both of these are memory partitions. The only OS I can think of predating the ones you mentioned is RT-11, the later versions (V2 did not have them). When did Unix first get partitions?
>
> paul
Partitions are pretty important in RT-11 v5.x, after all, there is the partition size limit, so you have to have multiple partitions for almost any HD, except very small ones.
Let?s not forget hardware enforced partitioning, the WEQSD/04 ESDI controller comes to mind. It see?s a single large ESDI HD as a single disk, but you can partition it on the controller, and the OS sees each partition as a separate physical disk. I seem to remember some MFM controllers that made the MFM drive appear to be RL01/RL02 or RK05 packs.
Zane
Anyone got any 8i switch or panel parts they Wana trade for any of these?
Got 6 3 pin spring loaded rockers appear to test good might need some
deoxot not sure came off the 8e below
8 of the 8e m rocker paddles orange and redish orange
https://drive.google.com/file/d/1Eprlv8d3TmSPFJ3rCHIJTFkQOyAZesCM/view?usp=…
Some are missing the plastic pivot dimples
8m with out it's switches
The rotory it's bit weird but possibly usable. Dunno enough about them.
It's center hole is ovaled a bit might gotten bashed. Might have some
usefull bits still
https://drive.google.com/drive/folders/1EpAag1J5r6RAR8ln_fprrdCEiOnJx5kq
I've got some other bits that might be usefull as well from the 8i to
anyone
I'm looking for 5 more rockers with or with out the 8i paddles
Or some 8i paddles I've got 5 brown and 10 white ones that I wanted to find
when I rescued my poor 8i outs the mud
Or any other parts that might be usefull
