From: Paul Riley <paul@rileyriot.com>
To: Ronald Natalie <ron@ronnatalie.com>
Cc: TUHS main list <tuhs@minnie.tuhs.org>
Subject: Re: [TUHS] DEC RL01/RL02 RX01/RX02 Disk Image Creator
Date: Tue, 2 Jun 2020 12:57:54 +0800 [thread overview]
Message-ID: <CAD05_j3smD4Z5T_uX15vfNxTJn2wEWxmgc_33vFPFrAtLg04TQ@mail.gmail.com> (raw)
In-Reply-To: <F8D91F81-90C1-4744-BAE2-B7780E75C50F@ronnatalie.com>
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Thanks Ron, and all others.
Theres plenty of grist for the mill, time for me to grind it.
Paul
*Paul Riley*
Mo: +86 186 8227 8332
Email: paul@rileyriot.com
On Tue, 2 Jun 2020 at 07:59, Ronald Natalie <ron@ronnatalie.com> wrote:
> As far as the early UNIXs go, any disk is collection of 512-byte blocks.
> The filesystems either the early (what I’ll call V6) and the later (V7)
> don’t differ much.
> The primary difference is that the later V7 had 16-bit uids and a
> provision for larger file systems/sizes. The V6 file system was limited
> to 2^24 blocks while V7
> did 2^32.
>
> The 512 block size corresponded to the native sector size of all the DEC
> hardware except the RX which I think only had 128-byte sectors. But
> again, we didn’t
> do much with that other than write the standalone console disks for the
> 780 (in RT format) and I also used it to make “unix” file system disks for
> the BRL “LOS”
> (little operating system…no time for sharing, uniprocessor system) that
> ran our internet routers and the IO hardware on the HEP supercomputer.
>
>
>
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next prev parent reply other threads:[~2020-06-02 4:58 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-01 10:18 Paul Riley
2020-06-01 13:01 ` Ronald Natalie
2020-06-01 22:35 ` Paul Riley
2020-06-01 13:04 ` Clem Cole
2020-06-01 22:45 ` Paul Riley
2020-06-01 23:59 ` Ronald Natalie
2020-06-02 4:57 ` Paul Riley [this message]
2020-06-02 13:31 ` Clem Cole
2020-06-02 13:52 ` Clem Cole
2020-06-02 15:44 ` Ronald Natalie
2020-06-02 16:26 ` Warner Losh
2020-06-02 18:08 ` Clem Cole
2020-06-02 18:59 ` Paul Winalski
2020-06-02 19:08 ` Adam Thornton
2020-06-01 15:04 Paul Ruizendaal
2020-06-01 22:54 ` Paul Riley
2020-06-01 15:18 Paul Ruizendaal
2020-06-02 0:14 Noel Chiappa
2020-06-02 1:26 ` Ronald Natalie
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