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Re: System log and format of log entries

From "Rod Pemberton" <boo@fasdfrewar.cdm>
Newsgroups alt.os.development
Subject Re: System log and format of log entries
Date 2015-07-15 03:33 -0400
Organization Aioe.org NNTP Server
Message-ID <op.x1s0lnu1yfako5@localhost> (permalink)
References <mo2p03$kme$1@dont-email.me> <mo3eab$tca$1@speranza.aioe.org>

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On Tue, 14 Jul 2015 12:38:35 -0400, Benjamin David Lunt <zfysz@fysnet.net>  
wrote:

> On a side note, and to go along with the CBI post I posted recently,
> I have now added the code to boot from a USB floppy and then once
> I have loaded my USB drivers, I can then write to the floppy.
> You see, when you boot from the USB floppy, the BIOS emulates it
> as a FDC, therefore you must use INT 13h calls to read and write
> from it.

That's a good thing.  We have access to it.

> However, once you move to pmode, v86 aside, you can no
> longer read or write to the disk in this manner.  Now you must load
> a USB driver to control the USB floppy drive.

That's a bad thing.  I think that's why I can't boot Linux from
an external USB drive.

> If my OS found that there was no floppy disk after boot from the
> USB emulated disk,

Huh?  Why would a "USB emulated disk" use a "floppy disk' at all?

> If my OS found that there was no floppy disk after boot from the
> USB emulated disk, it would, well for a better word, crash.
> "I booted from a floppy disk, where did it go?"

Ok.  You're saying that if after you booted, the OS couldn't find
the boot image, it would crash/halt/hang/panic or somesuch.

Can't you load the boot image into a ramdisk?  Is it only 1.44MB?


Rod Pemberton

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Thread

System log and format of log entries "James Harris" <james.harris.1@gmail.com> - 2015-07-14 11:42 +0100
  Re: System log and format of log entries "James Harris" <james.harris.1@gmail.com> - 2015-07-14 11:59 +0100
  Re: System log and format of log entries "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-15 03:23 -0400
    Re: System log and format of log entries "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-15 22:46 -0400
  Re: System log and format of log entries "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-15 03:33 -0400
    Re: System log and format of log entries Peter Cheung <mcheung63@gmail.com> - 2015-07-15 00:47 -0700
    Re: System log and format of log entries "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-15 22:42 -0400
      Re: System log and format of log entries "Benjamin David Lunt" <zfysz@fysnet.net> - 2015-07-16 12:18 -0700
        Re: System log and format of log entries "Mike Gonta" <mikegonta@gmail.com> - 2015-07-16 15:50 -0400
          Re: System log and format of log entries "Benjamin David Lunt" <zfysz@fysnet.net> - 2015-07-16 13:24 -0700
            Re: System log and format of log entries "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-17 06:39 -0400
              Re: System log and format of log entries "Benjamin David Lunt" <zfysz@fysnet.net> - 2015-07-17 10:27 -0700
                Re: System log and format of log entries "Benjamin David Lunt" <zfysz@fysnet.net> - 2015-07-21 16:38 -0700
  Re: System log and format of log entries "James Harris" <james.harris.1@gmail.com> - 2015-07-15 15:15 +0100

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