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References: <16905130930.52F6E.13899@lsd.chicago.il.us>
From: Jacob Moody <moody@posixcafe.org>
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Subject: Re: [9front] MBR; Boot Arguments
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On 7/27/23 21:58, Jay F. Shachter wrote:
> 
> Centuries ago, Nostradamus predicted that Jacob Moody would write on Thu Jul 27 16:53:52 2023:
> 
>>
>> Are you using an EFI partition table or an MBR? I assume you must be
>> using EFI if you are dealing in more then 4 partitions on a disk.
>> But in your previous mails you mentioned installing 9front in MBR
>> mode.
>>
> 
> It is an MBR-partitioned disk.  I think -- and please correct me if I
> am wrong -- that the entire concept of a boot flag on a disk slice is
> inapplicable to GPT-partitioned disks.
> 
>>
>> Can you give me an entire explanation of how your disk is
>> configured?
>>
> 
> Windows 10 occupies the first two primary slices (when I got the
> computer, Windows 10 had colonized all three primary slices, but I
> liberated the third one).  FreeDOS 1.3 resides on the third primary
> slice because it is practically impossible to get FreeDOS to work
> anywhere but on a primary slice.  Everything else resides on logical
> slices within the extended slice.  The two Linux systems reside on a
> single logical slice, which constitutes a volume group from which
> Linux logical volumes can be carved out.  The other operating systems
> each occupies a separate logical slice.  9front is on slice #14.  The
> MBR boots Linux GRUB.  There is also a backup copy of the Linux GRUB
> MBR on slice #10.  There is a backup copy of the Solaris GRUB MBR on
> slice #13.
> 
> But the question of disk layout -- the entire question of why the
> 9front bootloader cannot find anything in the 9fat filesystem when
> primary slice #1 is flagged as bootable -- is now a question only of
> intellectual, but not practical, interest.  I am bypassing the 9front
> bootloader; GRUB is booting /9pc64 directly.  The remaining question,
> which I hope someone on this mailing list can answer, is: What
> argument can I pass to /9pc64 that will tell it the bootfile, so that
> I don't have to type the Enter key whenever I boot 9front to confirm
> that I want to use local!/dev/sdE0/fs (similar to the user=glenda
> option that keeps me from having to type Enter to confirm that I am
> glenda)?  Thank you in advance for any and all replies.
> 
>                         Jay F. Shachter
>                         6424 North Whipple Street
>                         Chicago IL  60645-4111
>                                 (1-773)7613784   landline
>                                 (1-410)9964737   GoogleVoice
>                                 jay@m5.chicago.il.us
>                                 http://m5.chicago.il.us
> 
>                         "Quidquid latine dictum sit, altum videtur"
> 


For non prompted booting you can change 'bootargs' to 'nobootprompt'.
If you also add a 'user=glenda', that will prevent it from asking you
for that as well.