From: carl.lowenstein@gmail.com (Carl Lowenstein)
Subject: [TUHS] Unix V6 on SimH
Date: Sat, 24 Apr 2010 14:19:57 -0700 [thread overview]
Message-ID: <o2g5904d5731004241419scba6ef45m1c90e92094197941@mail.gmail.com> (raw)
In-Reply-To: <l2hd8adcf861004240916t16fa5a57lebb142fbdbdc5cad@mail.gmail.com>
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 946 bytes --]
On Sat, Apr 24, 2010 at 9:16 AM, Andrew Sealy-Bell
<andyamsterdam2003 at gmail.com> wrote:
> Hi, doesn't anybody know if there is a disk size limit on Unix 6? I wrote a
> C program to create a file and it won't go above around 1.5Mb. It doesn't
> crash or report any errors but the file size never exceeds around that size.
> Maybe it's a disk size limitation?
According to my memory, reinforced by reading the manual section File
System (V), there are several limits.
The disk size (in 512-byte blocks) is kept in the super-block as a
16-bit integer. This implies at most a 32MB file system. Since at
that time there was only one file system per disk, that means a
maximum 32MB disk.
The file size (in bytes) is kept in an i-node as a 24-bit number,
implying a maximum 16MB file.
carl
--
carl lowenstein marine physical lab u.c. san diego
clowenstein at ucsd.edu
prev parent reply other threads:[~2010-04-24 21:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-24 16:16 Andrew Sealy-Bell
2010-04-24 21:19 ` Carl Lowenstein [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=o2g5904d5731004241419scba6ef45m1c90e92094197941@mail.gmail.com \
--to=carl.lowenstein@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).