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Re: [SOLVED] Re: Yet another UEFI/BIOS question

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Le 22-09-2018, à 10:07:36 +0200, Pascal Hambourg a écrit :

>Le 22/09/2018 à 06:58, steve a écrit :
>>
>>>>Because what I finally did is install a fresh Debian on another device
>>>>(using GPT) and the ACPI errors still were there.
>>>
>>>In legacy mode (with a BIOS boot partition) or EFI mode (with an 
>>>EFI system partition) ?
>>
>>In EFI mode. The "Bios" is now fully in EFI mode and it sees all my boot
>>disks.
>
>Ok. I expected (with little hope though) that the errors might have 
>disappeared when booting in native EFI mode, not because you converted 
>disks to GPT.

Me too, but no chance, always the same errors. I guess it's not related
to kernel (4.18 from backports) but to Bios firmware (up to date). All I
can hope now is that they correct it. Nevertheless it doesn't to affect
the system (or if it does, it's so subtil that I just can't notice it).


>>>>I used the opportunity of having another Debian to convert my sda disk
>>>>to GPT tables, and change the BIOS setting to UEFI only (just for the
>>>>sake of it). So all my disk have a GPT partition table except for the 3
>>>>ones for the RAID1 array. Not sure whether I can use the same
>>>>manipulations to convert them to GPT also. But since they work fine, I
>>>>might leave it as it is.
>>>
>>>You can, but IMO it provides little value. GPT is useful in the 
>>>following cases :
>>>- disk bigger that 2 TiB
>>
>>Might come sooner or later.
>
>When it comes you'll use GPT on the new big disks. No need to convert 
>the old smaller ones.

Well I did, with no problem. Now all my 8 disks have GPT partition
tables.

>>I think I'll do that so to have 100% GPT disks and leave the past where
>>it is and prepare the future. But this step worries me a bit because I
>>have all my personal data on one of the RAID1 and really don't want to
>>loose them. I think best would be to backup those data elsewhere in case
>>things go wrong.
>
>1) Backup valuable data. RAID does not replace backups.

I know, but I rely on that, and I have a spare disk in case things go
the bad way. I have to put in place a procedure to do a real backup on
my freenas.

>2) Hey ! This is RAID 1. You have redundancy. You can convert one disk 
>at a time, and if things go wrong, you can just rebuild it.
>
>Note however that there is a small chance that a disk cannot be 
>converted to GPT as is. The GPT primary and backup partition tables 
>requires a few unallocated sectors (33 for a default 128-entry table) 
>at the beginning and at the end of the disk. If sectors in these areas 
>are allocated to partitions, the conversion is not possible.

Well, they didn't, all went fine.

Thanks for your help !

Have a nice week-end.

Steve

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Yet another UEFI/BIOS question steve <dlist@bluewin.ch> - 2018-09-19 17:00 +0200
  Re: Yet another UEFI/BIOS question Darac Marjal <mailinglist@darac.org.uk> - 2018-09-19 17:30 +0200
    Re: Yet another UEFI/BIOS question steve <dlist@bluewin.ch> - 2018-09-19 18:00 +0200
  Re: Yet another UEFI/BIOS question Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-09-19 23:40 +0200
    Re: Yet another UEFI/BIOS question steve <dlist@bluewin.ch> - 2018-09-20 09:00 +0200
      Re: Yet another UEFI/BIOS question Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-09-20 20:30 +0200
        [SOLVED] Re: Yet another UEFI/BIOS question steve <dlist@bluewin.ch> - 2018-09-21 08:40 +0200
          Re: [SOLVED] Re: Yet another UEFI/BIOS question Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-09-21 20:30 +0200
            Re: [SOLVED] Re: Yet another UEFI/BIOS question steve <dlist@bluewin.ch> - 2018-09-22 07:00 +0200
              Re: [SOLVED] Re: Yet another UEFI/BIOS question Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-09-22 10:10 +0200
                Re: [SOLVED] Re: Yet another UEFI/BIOS question steve <dlist@bluewin.ch> - 2018-09-22 10:50 +0200
            And yet another UEFI/BIOS question: Work on both. Wayne Sallee <Wayne@WayneSallee.com> - 2018-09-23 17:00 +0200
              Re: And yet another UEFI/BIOS question: Work on both. Patrick Bartek <nemommxiv@gmail.com> - 2018-09-23 18:20 +0200
                Re: And yet another UEFI/BIOS question: Work on both. Wayne Sallee <Wayne@WayneSallee.com> - 2018-09-23 23:30 +0200
                Re: And yet another UEFI/BIOS question: Work on both. Patrick Bartek <nemommxiv@gmail.com> - 2018-09-24 03:00 +0200
                Re: And yet another UEFI/BIOS question: Work on both. David Wright <deblis@lionunicorn.co.uk> - 2018-09-24 21:20 +0200
                Re: And yet another UEFI/BIOS question: Work on both. Michael Stone <mstone@debian.org> - 2018-09-24 21:30 +0200
                Re: And yet another UEFI/BIOS question: Work on both. Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-09-27 15:10 +0200
              Re: And yet another UEFI/BIOS question: Work on both. David Wright <deblis@lionunicorn.co.uk> - 2018-09-23 20:40 +0200

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