From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Thomas Schmitt" Subject: Re: ISO installer image: GPT versus MBR partitions Date: Sat, 20 Apr 2019 13:29:44 +0200 Message-ID: <32660673065364621040@scdbackup.webframe.org> References: <32128673174594726028@scdbackup.webframe.org> Content-Type: text/plain; charset="utf-8" Return-path: Received: from eggs.gnu.org ([209.51.188.92]:47944) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hHo9d-0003FI-Sc for guix-devel@gnu.org; Sat, 20 Apr 2019 07:27:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hHo9d-0000WT-1v for guix-devel@gnu.org; Sat, 20 Apr 2019 07:27:33 -0400 In-Reply-To: <32128673174594726028@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: bug-xorriso@gnu.org Cc: guix-devel@gnu.org Hi, ... and if the erasure of the partition table entry helps, would it then also help if that entry's partition does not start at LBA 0 ? Change bytes 446 (dec) to 461 (dec) from (in hex): 80 00 01 00 01 01 12 4f 00 00 00 00 40 0b 00 00 to 80 00 02 00 01 01 12 4f 01 00 00 00 3f 0b 00 00 "02" = Sector 2 = LBA 1. "01 00 00 00" = LBA 1. "3f 0b 00 00" = bloc count 2879, rather than 2880. Reasoning: It would make a nice endless loop if EFI dives into any partition and looks for sub partition tables. The one in GRUB's efi.img refers to itself. DVD might be immune because EFI does not do this diving when it finds the partition by the El Torito boot catalog. Have a nice day :) Thomas