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Re: Building a multiboot system!

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From "Rod Pemberton" <dont_use_email@xnohavenotit.cnm>
Newsgroups comp.os.msdos.programmer
Subject Re: Building a multiboot system!
Date Sat, 21 Dec 2013 01:51:35 -0500
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On Fri, 20 Dec 2013 19:56:53 -0500, dg1261 <dgREMOVE-THIS1261@cs.com>  
wrote:
> "Rod Pemberton" <dont_use_email@xnohavenotit.cnm> wrote in
> news:op.w8dqg1zk5zc71u@localhost:

>> If you're resizing to a larger size, then simply rewriting
>> larger partition size in the correct partition record of the master
>> boot sector should work.
>
> There's more to it than that.  The boot parameter block (BPB)

That's a common mistake, it's:

  BIOS Parameter Block

> The boot parameter block (BPB) in the partition's boot sector has
> to be adjusted, and the FATs would need to be expanded so they have
> room to record the extra clusters.

... "has" to be adjusted or "may need" to be adjusted?

I would think both the BPB and FAT sizes would be valid for a
certain range of partition sizes.  So, if the change is outside
that range, above or below, then they'd have to be adjusted.
If within, they shouldn't.  Assuming they're already set to the
maximums, it's even more likely they shouldn't need adjustment.

 From the RBIL BPB and extended BPB, I only see two fields that
would appear to need adjustment sometimes: "sectors per cluster"
and "sectors per FAT".


Rod Pemberton

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Thread

Building a multiboot system! Patrick Rockwell <prockwell@thegrid.net> - 2013-12-18 20:25 -0800
  Re: Building a multiboot system! JJ <duh@nah.meh> - 2013-12-19 13:01 +0700
    Re: Building a multiboot system! Patrick Rockwell <prockwell@thegrid.net> - 2013-12-19 17:37 -0800
      Re: Building a multiboot system! "Rod Pemberton" <dont_use_email@xnohavenotit.cnm> - 2013-12-20 02:16 -0500
        Re: Building a multiboot system! "Stanley Daniel de Liver" <admin@127.0.0.1> - 2013-12-20 11:30 +0000
          Re: Building a multiboot system! dg1261 <dgREMOVE-THIS1261@cs.com> - 2013-12-21 00:59 +0000
            Re: Building a multiboot system! "James Harris" <james.harris.1@gmail.com> - 2013-12-21 12:18 +0000
              Re: Building a multiboot system! "Stanley Daniel de Liver" <admin@127.0.0.1> - 2013-12-21 15:11 +0000
              Re: Building a multiboot system! "Rod Pemberton" <dont_use_email@xnohavenotit.cnm> - 2013-12-21 17:35 -0500
                Re: Building a multiboot system! "James Harris" <james.harris.1@gmail.com> - 2013-12-21 23:33 +0000
            Re: Building a multiboot system! "Stanley Daniel de Liver" <admin@127.0.0.1> - 2013-12-21 14:47 +0000
        Re: Building a multiboot system! Ross Ridge <rridge@csclub.uwaterloo.ca> - 2013-12-22 15:31 -0500
  Re: Building a multiboot system! dg1261 <dgREMOVE-THIS1261@cs.com> - 2013-12-19 11:29 +0000
    Re: Building a multiboot system! Harry Potter <rose.joseph12@yahoo.com> - 2013-12-19 08:10 -0800
      Re: Building a multiboot system! Patrick Rockwell <prockwell@thegrid.net> - 2013-12-19 13:37 -0800
      Re: Building a multiboot system! dg1261 <dgREMOVE-THIS1261@cs.com> - 2013-12-20 06:22 +0000
        Re: Building a multiboot system! "Rod Pemberton" <dont_use_email@xnohavenotit.cnm> - 2013-12-20 02:16 -0500
          Re: Building a multiboot system! "Stanley Daniel de Liver" <admin@127.0.0.1> - 2013-12-20 11:15 +0000
          Re: Building a multiboot system! dg1261 <dgREMOVE-THIS1261@cs.com> - 2013-12-21 00:56 +0000
            Re: Building a multiboot system! "Rod Pemberton" <dont_use_email@xnohavenotit.cnm> - 2013-12-21 01:51 -0500
              Re: Building a multiboot system! dg1261 <dgREMOVE-THIS1261@cs.com> - 2013-12-21 08:54 +0000
                Re: Building a multiboot system! "James Harris" <james.harris.1@gmail.com> - 2013-12-21 12:26 +0000
              Re: Building a multiboot system! Steph <pas.de.mail@serveur.invalid> - 2013-12-21 15:11 +0000
    Re: Building a multiboot system! Patrick Rockwell <prockwell@thegrid.net> - 2014-02-07 14:15 -0800
      Re: Building a multiboot system! dg1261 <dgREMOVE-THIS1261@cs.com> - 2014-02-08 09:41 +0000
  Re: Building a multiboot system! miepbart@gmail.com - 2014-08-17 00:02 -0700

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