Re: install/59484: sysinst is confused by hybrid MBR

["Valery Ushakov via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR install/59484; it has been noted by GNATS.

From: Valery Ushakov <uwe%stderr.spb.ru@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: Martin Husemann <martin%duskware.de@localhost>
Subject: Re: install/59484: sysinst is confused by hybrid MBR
Date: Thu, 26 Jun 2025 04:34:06 +0300

 > Could you upload a smallish/compressed disk image with a hybrid GPT
 > somewhere, please?
 
 I tried but a naive attempt didn't work.  May be it needs the EFI
 partition or something.  It might be easier for you to reproduce it
 locally in a VM by following the steps I described.  You might be able
 to skip the longest first step (installing linux) by grabbing some
 existing Ubuntu OVA e.g. https://www.osboxes.org/ubuntu/
 
 Alternatively, gdisk can convert from protective MBR to hybrid MBR
 (and vice versa, which I did) https://www.rodsbooks.com/gdisk/
 
 I'll try to see if I can reproduce this over the weekend when I have
 more time.
 
 I think it's worthwhile to make the dual boot scenario of 1) reduce
 existing linux partition, 2) install netbsd into the freed space - a
 bit smoother (if the user is committed enough to run NetBSD on real
 h/w and not in the VM, it should be encouraged :).
 
 -uwe