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Re: [solved, partly] Re: Grub menu entry for a system on a second drive.

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    From: David Wright <deblis@lionunicorn.co.uk>
    Date: Sun, 27 Oct 2024 22:42:15 -0500
> Well, it could be because Void apparently isn't a glibc OS.

Thanks.  Haven't thought about that.

> You could check /usr/lib/os-probes/mounted/90linux-distro
> to see whether the first test would succeed. Or a lazy way:
> type
>   set -x
> before you run os-prober and
>   set +x
> afterwards, and track what it does. You'd probably want to
> capture the output as it could be voluminous; it looks for
> linux systems just about last.

You've lost me there.  Which first test?  Where is "set"?  

> Well, it's presumably not Grub, as you say you can boot Void
> from your handcrafted menuentry once you've booted into the
> correct grub.cfg.

The handcrafted Void stanza allowed booting 2 or 3 times.  In at 
least a dozen other instances it failed and Grub returned to the menu.

> BTW I forgot to mention, your Grub ls command, which you reported
> on earlier, will fail to see the Void OS because there's no
> insmod part_gpt command in the grub.cfg until you press Return
> on the Void menuentry. So that's ok for booting the Void entry,
> but up until that moment, Grub can't read GPT partition tables
> without the part_gpt. So type an  insmod part_gpt  command first,
> if you need to type  ls.

ls is in the stanza in 40_custom.
  ...
  nativedisk
  echo 'These disks are accessible.'
  ls
  echo 'Setting root part.'
  set root='(usb2,gpt6)'
  echo 'Booting Linux.'
  linux ...
The grub commands are executed one by one; correct?  (usb2,gpt6)
should appear in the output of ls before 'set root ...' is executed.

>> Rather than spend more time investigating, will put the HDD in the 
>> target machine and work there.

I hadn't realised there was one.

Yes.  I brought the disk from the "Void machine" and connected, via  
a USB 2.0 adapter, to a Debian system at home.  Here, installed
Void and worked on configuration.  Soon the "Void disk" will return 
to the "Void machine".

> BTW I assume your second disk, being GPT, has a BIOS Boot partition?

Correct.

> Or is this target machine going to boot with UEFI, in which case
> you need an EFI partition. 

The disk also has an EFI partition.  I couldn't make EFI boot succeed.   
Therefore set the "hidden" flag on the EFI part and fell back to BIOS 
boot.

> I think moving disks between differently
> booting machines can be "fun"; it's why my own disks typically have
> both a BIOS Boot partition and an EFI partition. The former is only
> 3MB and ends at sector 8191; the latter can be borrowed for swap
> in MBR machines.

Installing and configuring Void at home is convenient.  Will soon see what 
happens when the disk is in the machine where it belongs.

Thx,                        ... P.

-- 
VoIP:   +1 604 670 0140
work: https://en.wikibooks.org/wiki/User:PeterEasthope

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Grub menu entry for a system on a second drive. peter@easthope.ca - 2024-10-24 22:50 +0200
  Re: Grub menu entry for a system on a second drive. Felix Miata <mrmazda@earthlink.net> - 2024-10-24 23:00 +0200
  Re: Grub menu entry for a system on a second drive. David Wright <deblis@lionunicorn.co.uk> - 2024-10-25 05:30 +0200
    Re: Grub menu entry for a system on a second drive. peter@easthope.ca - 2024-10-25 17:50 +0200
      Re: Grub menu entry for a system on a second drive. Joe <joe@jretrading.com> - 2024-10-25 18:10 +0200
        Re: Grub menu entry for a system on a second drive. Max Nikulin <manikulin@gmail.com> - 2024-10-25 18:40 +0200
        Re: Grub menu entry for a system on a second drive. peter@easthope.ca - 2024-10-25 21:00 +0200
          Re: Grub menu entry for a system on a second drive. David Wright <deblis@lionunicorn.co.uk> - 2024-10-25 21:20 +0200
            Re: Grub menu entry for a system on a second drive. peter@easthope.ca - 2024-10-25 22:50 +0200
              Re: Grub menu entry for a system on a second drive. peter@easthope.ca - 2024-11-10 02:30 +0100
                Re: Grub menu entry for a system on a second drive. David Wright <deblis@lionunicorn.co.uk> - 2024-11-12 05:00 +0100
      Re: Grub menu entry for a system on a second drive. Greg Wooledge <greg@wooledge.org> - 2024-10-25 18:50 +0200
      Re: Grub menu entry for a system on a second drive. David Wright <deblis@lionunicorn.co.uk> - 2024-10-25 20:20 +0200
  Re (2): Grub menu entry for a system on a second drive. peter@easthope.ca - 2024-10-25 18:40 +0200
    Re: Grub menu entry for a system on a second drive. Felix Miata <mrmazda@stanis.net> - 2024-10-25 20:00 +0200
      Re: Grub menu entry for a system on a second drive. David Wright <deblis@lionunicorn.co.uk> - 2024-10-25 21:10 +0200
        Re: Grub menu entry for a system on a second drive. Felix Miata <mrmazda@stanis.net> - 2024-10-25 22:50 +0200
        Re: Grub menu entry for a system on a second drive. Felix Miata <mrmazda@stanis.net> - 2024-10-26 06:00 +0200
          Re: Grub menu entry for a system on a second drive. David Wright <deblis@lionunicorn.co.uk> - 2024-10-26 07:10 +0200
    Re: Re (2): Grub menu entry for a system on a second drive. Tim Woodall <debianuser@woodall.me.uk> - 2024-10-25 23:40 +0200
      [solved, partly] Re: Grub menu entry for a system on a second drive. peter@easthope.ca - 2024-10-27 05:20 +0100
        Re: [solved, partly] Re: Grub menu entry for a system on a second  drive. David Wright <deblis@lionunicorn.co.uk> - 2024-10-27 16:00 +0100
          Re: [solved, partly] Re: Grub menu entry for a system on a second drive. peter@easthope.ca - 2024-10-27 19:50 +0100
            Re: [solved, partly] Re: Grub menu entry for a system on a second  drive. Greg Wooledge <greg@wooledge.org> - 2024-10-28 12:10 +0100
              Re: [solved, partly] Re: Grub menu entry for a system on a second  drive. Greg Wooledge <greg@wooledge.org> - 2024-11-01 12:10 +0100
            Re: [solved, partly] Re: Grub menu entry for a system on a second drive. peter@easthope.ca - 2024-10-28 17:30 +0100
            Re: [solved, more] Re: Grub menu entry for a system on a second drive. peter@easthope.ca - 2024-11-02 16:10 +0100
              Re: [solved, more] Re: Grub menu entry for a system on a second  drive. David Wright <deblis@lionunicorn.co.uk> - 2024-11-04 05:50 +0100
                Re: [solved, more] Re: Grub menu entry for a system on a second drive. peter@easthope.ca - 2024-11-10 04:00 +0100
              Re: [solved, more] Re: Grub menu entry for a system on a second  drive. Dan Purgert <dan@djph.net> - 2024-11-04 13:50 +0100
          Re: [solved, partly] Re: Grub menu entry for a system on a second  drive. Max Nikulin <manikulin@gmail.com> - 2024-11-03 03:50 +0100

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