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Groups > linux.debian.user > #170780

Re: Problem with NON-STANDARD install

From Felix Miata <mrmazda@earthlink.net>
Newsgroups linux.debian.user
Subject Re: Problem with NON-STANDARD install
Date 2016-08-06 16:20 +0200
Message-ID <s3aCe-6DX-3@gated-at.bofh.it> (permalink)
References <s1ntU-88a-27@gated-at.bofh.it> <s1oT0-Iy-17@gated-at.bofh.it> <s1pP3-1ko-13@gated-at.bofh.it> <s1qUO-1Zf-5@gated-at.bofh.it> <s36Ih-4a0-3@gated-at.bofh.it>
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Pascal Hambourg composed on 2016-08-06 12:01 (UTC+0200):
...
> If the boot image is in a PBR, the BIOS won't load it directly

It will if the PBR is on a primary partition on the same disk. It's how all 
my systems boot if I'm not using IBM Boot Manager as the primary bootloader.

...
> - or as a regular file in a filesystem appearing as
> /boot/grub/i386-pc/core.img (or /boot/grub/core.img with older versions
> of GRUB such as the one in Wheezy). This option is not recommended as
> the filesystem may move the blocks around and the location of the core
> image is hardcoded into the boot image.

This "not recommended" philosophy corresponds almost perfectly with the 
practice universally complained about that Windows' installer replaces Grub 
code that it finds in the MBR with its own legacy/generic boot code, code 
which is just as capable of loading Grub code from a primary partition's PBR 
as it is loading Windows code from a primary partition's PBR, which is how 
Windows normally boots. When Grub is installed to a primary partition's PBR 
in the first place, Windows "hijacking" the MBR is a non-issue.[1]

As a practical matter, moving core image blocks around is uncommon, and just 
as easily fixed if and when it does occur as is reinstalling Grub to the MBR.

[1]
<http://old-en.opensuse.org/Bugs/grub#How_does_a_PC_boot_.2F_How_can_I_set_up_a_working_GRUB.3F>
-- 
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

  Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/

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Thread

Problem with NON-STANDARD install Richard Owlett <rowlett@cloud85.net> - 2016-08-01 17:40 +0200
  Re: Problem with NON-STANDARD install David Wright <deblis@lionunicorn.co.uk> - 2016-08-01 19:10 +0200
    Re: Problem with NON-STANDARD install Richard Owlett <rowlett@cloud85.net> - 2016-08-01 20:10 +0200
      Re: Problem with NON-STANDARD install David Wright <deblis@lionunicorn.co.uk> - 2016-08-01 21:00 +0200
      Re: Problem with NON-STANDARD install Joe <joe@jretrading.com> - 2016-08-01 21:20 +0200
        Re: Problem with NON-STANDARD install Richard Owlett <rowlett@cloud85.net> - 2016-08-01 22:30 +0200
        Re: Problem with NON-STANDARD install Felix Miata <mrmazda@earthlink.net> - 2016-08-02 03:10 +0200
        Re: Problem with NON-STANDARD install Pascal Hambourg <pascal@plouf.fr.eu.org> - 2016-08-06 12:10 +0200
        Re: Problem with NON-STANDARD install Pascal Hambourg <pascal@plouf.fr.eu.org> - 2016-08-06 12:10 +0200
          Re: Problem with NON-STANDARD install Richard Owlett <rowlett@cloud85.net> - 2016-08-06 15:10 +0200
          Re: Problem with NON-STANDARD install Felix Miata <mrmazda@earthlink.net> - 2016-08-06 16:20 +0200
            Re: Problem with NON-STANDARD install Pascal Hambourg <pascal@plouf.fr.eu.org> - 2016-08-07 00:00 +0200
              Re: Problem with NON-STANDARD install Felix Miata <mrmazda@earthlink.net> - 2016-08-07 00:20 +0200
            Re: Problem with NON-STANDARD install Pascal Hambourg <pascal@plouf.fr.eu.org> - 2016-08-07 11:50 +0200
  Re: Problem with NON-STANDARD install Brian Flaherty <bxf4@yahoo.com> - 2016-08-01 19:30 +0200
    Re: Problem with NON-STANDARD install Richard Owlett <rowlett@cloud85.net> - 2016-08-01 20:30 +0200
  Re: Problem with NON-STANDARD install Richard Owlett <rowlett@cloud85.net> - 2016-08-05 20:50 +0200
    Re: Problem with NON-STANDARD install David Wright <deblis@lionunicorn.co.uk> - 2016-08-05 22:10 +0200
      Re: Problem with NON-STANDARD install Richard Owlett <rowlett@cloud85.net> - 2016-08-05 23:10 +0200
      [PRIVATE REPLY} Re: Problem with NON-STANDARD install Richard Owlett <rowlett@cloud85.net> - 2016-08-05 23:20 +0200
    Re: Problem with NON-STANDARD install Richard Owlett <rowlett@cloud85.net> - 2016-09-02 15:40 +0200
      Re: Problem with NON-STANDARD install Felix Miata <mrmazda@earthlink.net> - 2016-09-03 06:30 +0200
        Re: Problem with NON-STANDARD install Lisi Reisz <lisi.reisz@gmail.com> - 2016-09-03 12:40 +0200
          Re: Problem with NON-STANDARD install Gene Heskett <gheskett@shentel.net> - 2016-09-03 13:00 +0200

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