GNU bug report logs - #30312
documentation: misleading EFI partitioning instructions

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From: Joshua Branson <jbranso <at> fastmail.com>
To: 30312 <at> debbugs.gnu.org
Subject: bug#30312: documentation: misleading EFI partitioning instructions
Date: Thu, 01 Feb 2018 13:23:12 -0800

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By no means am I a developer, but that sounds like a good idea.


On Thu, Feb 1, 2018, at 3:01 AM, Gábor Boskovits wrote:
> 2018-02-01 10:13 GMT+01:00 Gábor Boskovits <boskovits <at> gmail.com>:
>> 2018-01-31 20:01 GMT+01:00 Ricardo Wurmus <ricardo.wurmus <at> mdc-
>> berlin.de>:>>> The manual section “Preparing for Installation: Disk
>>> Partitioning” says>>>  this:
>>> 
>>>  --8<---------------cut here---------------start------------->8---
>>>     If your disk uses the GUID Partition Table (GPT) format and you
>>>     plan>>>  to install BIOS-based GRUB (which is the default), make sure a
>>>  BIOS Boot>>>  Partition is available (*note (grub)BIOS installation::).
>>> 
>>>     If you instead wish to use EFI-based GRUB, a FAT32 “EFI System
>>>  Partition” (ESP) is required.  This partition should be mounted at>>>  ‘/boot/efi’ and must have the ‘esp’ flag set.  E.g., for ‘parted’:>>> 
>>>       parted /dev/sda set 1 esp on
>>> 
>>>     Once you are done partitioning the target hard disk drive, you
>>>     have>>>  to create a file system on the relevant partition(s)(1).  For
>>>  the ESP,>>>  if you have one and assuming it is ‘/dev/sda2’, run:
>>> 
>>>       mkfs.fat -F32 /dev/sda2
>>>  --8<---------------cut here---------------end--------------->8---
>>> 
>>>  First, this sounds like it’s up to the user to pick either EFI-
>>>  based>>>  GRUB or BIOS-based GRUB.  It is not clear that this is
>>>  determined by>>>  whether the machine has a {BIOS, EFI in legacy mode} or EFI.  It’s>>>  really not much of a choice.
>>> 
>>>  Second, the “parted” command operates on the first partition
>>>  (“1”), yet>>>  for the second command the second partition (“/dev/sda2”) is
>>>  used.  It’s>>>  better to be consistent here, i.e. to change “set 1 esp on” to
>>>  “set 2>>>  esp on” and to state that this would modify “/dev/sda2”.
>>> 
>>>  Finally, it is not clear where the efi partition should be mounted.>>>  Should it be /mnt/boot/efi?  If so, should the configuration file
>>>  specify “/mnt/boot/efi” as the target?  Or should it be
>>>  “/boot/efi”?>>> 
>>>  An example would be useful here.
>>> 
>> I agree an example would be nice.
>> I will have a look at this when I have time.
>> I guess I had done something similar.
>> 
> I've just looked around and found that we have ovmf in our repository.> It would be nice if we could create a system test and use an ovmf qemu
> to test installation.> Once we have that we could get the documentation consistent with a
> working testcase.> WDYT? 
>>  
>> 
>>> --
>>>  Ricardo
>>> 
>>> 
>> 

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