From mboxrd@z Thu Jan 1 00:00:00 1970 From: Danny Milosavljevic Subject: Re: ISO installer image: GPT versus MBR partitions Date: Thu, 25 Apr 2019 00:13:13 +0200 Message-ID: <20190425001251.551fac14@scratchpost.org> References: <20190424091323.uyuxd3ib7zfw2cut@pelzflorian.localdomain> <6546677712020146532@scdbackup.webframe.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; boundary="Sig_/yQ3bOSCYeOGex32d64fgaxJ"; protocol="application/pgp-signature" Return-path: Received: from eggs.gnu.org ([209.51.188.92]:60000) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hJQ90-0006rG-T2 for guix-devel@gnu.org; Wed, 24 Apr 2019 18:13:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hJQ8z-0004Od-0f for guix-devel@gnu.org; Wed, 24 Apr 2019 18:13:34 -0400 In-Reply-To: <6546677712020146532@scdbackup.webframe.org> List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org Sender: "Guix-devel" To: Thomas Schmitt Cc: bug-xorriso@gnu.org, guix-devel@gnu.org --Sig_/yQ3bOSCYeOGex32d64fgaxJ Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi Thomas, thanks for the investigative work you are doing. If someone is testing this with Guix, make sure to actually try to boot Guix with it (until the root is mounted). Back in the day I changed the root discovery of Guix to make it also consider using the entire disk (as oppose= d to a partition on it) as a viable root device (see guix master, commit 9833bcfc08ef009b9e8b4398baa481ef65c80ad7). That could maybe make it choke if there are multiple partitions/disks with equal labels (or whatever field it's searching for) on it (though probably = not-- as long as its immaterial which of the partitions/disks with the equal field values is mounted). FWIW, I'm all for having a MBR-only Guix installer disk as you suggest. But I'd rather not do the hack the others are doing. It's hard enough to debug this stuff when everyone is playing nice. How should we mount the root when the right way (with two non-overlapping partitions) boots from DVD ? (I'm surprised that it needs so much manual intervention to make grub-mkres= cue do the right thing. One of the reasons I chose grub-mkrescue was that I assumed that its output would boot fine on many different system types-- it being a rescue disk creator and all. I guess there are tradeoffs to be made...) --Sig_/yQ3bOSCYeOGex32d64fgaxJ Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEds7GsXJ0tGXALbPZ5xo1VCwwuqUFAlzA33kACgkQ5xo1VCww uqVNmgf/VKZvwBYXGO846j7RJD+51wjFZFpeYlzqZIz9oem7733+f6w+UhuOTSpv Clo8WENT5+H79OB5X/+2jXYmyJinPT3gzxEM5oP5V1+70pcgE4Z+Ft/7k8Nuv3WJ /jWiv/BdFtGaXsxK5ycPhYOhvRYOm86ZxCO/TrUgWjV9zVKAKByeYbEjs9MpWvqm R2Cbgf4v4AGSsZGQfMWa6L0wMZMFCS4QEU/ZOJEx09L1qgQGD3L48p9zkOHZahIB yKkkBKeZAgO1j9kJREOy1XoHgzXcAbQCD4iANcCiJ96Ag+J+XsMf5DoXpAZUGbQD A9KZutg2Lo98iWId9Yjgkd/VN9VGSQ== =k5wm -----END PGP SIGNATURE----- --Sig_/yQ3bOSCYeOGex32d64fgaxJ--