From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Thomas Schmitt" Subject: Re: ISO installer image: GPT versus MBR partitions Date: Fri, 19 Apr 2019 12:58:58 +0200 Message-ID: <9484672957134939490@scdbackup.webframe.org> References: <20190419093946.ulyjiaeodukk4rru@pelzflorian.localdomain> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Return-path: Received: from eggs.gnu.org ([209.51.188.92]:59629) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hHRVj-0004zU-V2 for guix-devel@gnu.org; Fri, 19 Apr 2019 07:16:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hHRCM-0007Dt-O3 for guix-devel@gnu.org; Fri, 19 Apr 2019 06:56:51 -0400 In-Reply-To: <20190419093946.ulyjiaeodukk4rru@pelzflorian.localdomain> 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, Florian Pelz wrote: > For x86_64 iso images, the Macbook does *not dismiss*. It gets stuck > in the lightgray startup screen forever without showing a menu with > the drives to boot from, except for the Debian ISO image, for which a > menu is shown with an =C2=BBEFI partition=C2=AB that runs a bootloader w= hen > chosen. So the problem might be during the inspection of the EFI partition whether it is worth to be offered for booting. Comparing the output of program "strings" from both bootx64.efi files, i see in the Debian file text about Secure Boot, which are not in the Guix file: SecureBoot SetupMode ... Secure Boot forbids loading module from %s ... grub_efi_secure_boot Older Debian netinst maybe ? ... digging in my collection ... The youngest without "Secure" in its bootx64.efi is debian-7.7.0-amd64-netinst.iso You could check whether this hangs like Guix. Debian's own ISO archive of 7.7.0 only offers CD-1 as jigdo. Probably with the same EFI equipment. But let's google ... http://ftp.riken.go.jp/Linux/debian/debian-cdimage/archive/7.7.0/amd64/i= so-cd/debian-7.7.0-amd64-netinst.iso It matches my old copy. 232,783,872 bytes. SHA512: 5cb6e4fea55fbb5173f90c3a545b843c6c193e29c3aa32b3306c9bbdfb1ad6a6a36ae8be= 50e91af9d03d5f21c472bd05d04d3508172e0b519e76714333c7c74b Have a nice day :) Thomas