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Groups > linux.debian.user > #274044

Re: Grub menu entry for a system on a second drive.

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On 25/10/2024 23:06, Joe wrote:
> On 25 Oct 2024 08:26:21 -0700 peter@easthope.ca wrote:
>>
>> A new-to-me detail is hd0 having FAT and hd1 having GPT.
>> According to this, OK for Grub2.
[...]
> Modern drives use GPT partitioning, and modern computers generally have
> UEFI firmware rather than BIOS. The EFI partition *must* be one of the
> FAT family, for any OS using UEFI.

I suspect some confusion. Either MBR (not FAT) vs. GPT partition table 
or FAT filesystem on specific partition like (hd0,gpt1) or (hd0,msdos1), 
not on whole (hd0) or (hd1) drive.

A plugged USB stick may shift drive numbers, so hd1 may accidentally 
become hd2. Grub installer may add a command to rely on filesystem UUID, 
not on drive numbering:

search.fs_uuid 12345678-90ab-cdef-1234-567890abcdef root

or a variant with a hint where this partition is expected

search.fs_uuid 12345678-90ab-cdef-1234-567890abcdef root hd1,gpt3

to set the "root" variable.

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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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