From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from list by lists.gnu.org with archive (Exim 4.71) id 1hPYns-0004eR-9A for mharc-grub-devel@gnu.org; Sat, 11 May 2019 16:41:08 -0400 Received: from eggs.gnu.org ([209.51.188.92]:59112) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hPYnq-0004e9-Sa for grub-devel@gnu.org; Sat, 11 May 2019 16:41:07 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hPYnp-0004Om-Qw for grub-devel@gnu.org; Sat, 11 May 2019 16:41:06 -0400 Received: from mout.gmx.net ([212.227.17.21]:55643) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hPYnp-0004NZ-Gx for grub-devel@gnu.org; Sat, 11 May 2019 16:41:05 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1557607261; bh=DFyOkfPSra0BGgZvPtHHruiJHRSpFxiwgNyoBrDCVTI=; h=X-UI-Sender-Class:Date:From:To:Subject:Cc:References:In-Reply-To; b=guUPKiHyJOkB6fihjKUOQCvLcEXAZIg7W/B8+kXKXSECr2lJXuUrSemRVavYXa/bt 4GnZ/uj+9f+jMtIzJbimdP5cmNyKzp3K9ZsxVWugsWG5Ymd+Fd65DqN7tNVWodIkjX 7sZ/4hxuLujryj2UupkeraPNDhKTn2/8ZQEnRQ1M= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from scdbackup.webframe.org ([79.222.46.132]) by mail.gmx.com (mrgmx101 [212.227.17.168]) with ESMTPSA (Nemesis) id 0MW8PN-1hEJJU2hmz-00XOjK; Sat, 11 May 2019 22:41:01 +0200 Date: Sat, 11 May 2019 22:39:25 +0200 From: "Thomas Schmitt" To: grub-devel@gnu.org Subject: Re: grub-mkrescue: Problem with MBR partition table at start of EFI partition Content-Type: text/plain; charset="utf-8" Cc: References: <20190511191301.pgpmmpuyuavd3ock@pelzflorian.localdomain> In-Reply-To: <20190511191301.pgpmmpuyuavd3ock@pelzflorian.localdomain> Message-Id: <18486678566337361976@scdbackup.webframe.org> X-Provags-ID: V03:K1:5w7aHo+6WAPAS7HXfwGjQBKqpXg6sN2pM7kTIXShuHnuuDie1OS fbKCjT+DA1FE/jzhVUMVDPpVPSDdPoJ1mhqiu76jJ7KGWCCigUA8Vv2+jZiwl/q+rr7JOYy CqrJQtYXuCdIm92fb5wUOjzrWeP1jzJZzQtQuK/nVoQownUExTewDl9+bcPzElgNQTiF3cr hendaGoV5CZrybgbstC2A== X-UI-Out-Filterresults: notjunk:1;V03:K0:SmgflYuDejE=:RSRp5S/bcMFOpGQ8j22Qcm R81HfoG0utWEAyb7H9Ef1mC4KBWaEI38lq1gU+75cvkl+EBaSa5cwzZOo6Wh3dFBOBmM3ewYq Rz6Hqk9k7XhEY66pss0yG6tMjpx86P34GTMpQoq+amIOeWgkPeX+EKYjSImE0XMxqNrXsiUc2 UfaJmc0XutJuqE4tD9km9qed+3xmIKq/gL951eZqfhtdFxk1vto6yGw3DsoW2V+OGXHCemT2m A4E75K54n12GQzc2FXJQh8l4q0zuHOhkYR3GbVJFxZuZg7oM882gqA8V4BjXgovpHWOSUp++o f5SIY02rPLMXA0RFye4aBvPzhraQK+7jgWlsjRtrQDl8MTZ9MnbMVNQBfIaOXhw18p3D6ztV9 0ZhIjwMPYA+tOzI979+qr2jpULdu0m/+XJK5tK5NpIbBG19oRSqpAxl0Emh3sNf9T38JK3DL0 +JBRFryVGI+8DZqtBu5h3truJi5TOqK6V3vFgHooRgaT/Y0NNg2Hd/agAqbvaL+0Tk8Qm/sYJ IF7EMNfm2LythU/7REgyfInKgWmoUt1LlEhdOD7Vww6LTsaxHCHanIYbeTp02oprFtW6fb4pc C039luDmHFpEjMrzVLKyC/S7SgAoQhosSe/6h8+oeQN28LA0BSMRGUxctaTlqdQRMDFhdp3Mq a0o7Zw/LR4J7a0yYxqcI9w35/2jlOJGemxlRIIL3mUEpcHZaHa7Fo/mSZ5zPIwtJRrPPLqdCx mFx+Pl9xxHWoeG5lTXzMTqxEnBM2kt+TaVt68gaHisC6alvU3dXSvzEpJAxChoazFyWqqKWPN VWfJ36BolBuuRoQKtcudHKAe+6clx7YYAxXjUudGrFgWkvTrSEgxOKrj7ed12mkC48Wxhnfz7 FAiARJrnIpWZrU0Oq1yLMLZyq5U5mmZtE2mcH1GdrtSVBw2n2uaj1jpVIlwJ+Y/gFLK6NQukZ JWVWd08QoTQ== X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 212.227.17.21 X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: The development of GNU GRUB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 11 May 2019 20:41:07 -0000 Hi, Florian Pelz wrote: > I guess this is off-topic and we cannot learn anything about the > permissibility of mformat -k from Windows? Yes. The on-topic conclusion so far is that i cowardly propose to zeroize the MBR partition table in the mformat result before populating it by mcopy. (Code snippets from SYS_AREA_SPARC around line 855 could be transplanted and adapted to zeroize bytes 446 to 509 of efiimgfat.) Exploring the other differences between mformat with and without -k is probably useless, because the big truck makes its own lane anyway. Have a nice day :) Thomas