From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FROM autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 6798 invoked from network); 26 Apr 2021 17:52:21 -0000 Received: from 1ess.inri.net (216.126.196.35) by inbox.vuxu.org with ESMTPUTF8; 26 Apr 2021 17:52:21 -0000 Received: from ms11p00im-qufo17291801.me.com ([17.58.38.47]) by 1ess; Mon Apr 26 13:08:39 -0400 2021 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=me.com; s=1a1hai; t=1619456916; bh=9+O2xITxUQFIgcmRBldVPdW3FXn/Uh1t09LelI2ZrdU=; h=From:Content-Type:Mime-Version:Subject:Date:To:Message-Id; b=wzd0EKWXXygLxUNTH02TRByWS/B6pwdGetIZDeu05AZoFWNQnRAwqX/TY4V5fWp06 eww7USxjBDQYoGa3EIXih6tZ4UPYQQyMR1FdlmbzZ3XPxTiAuS9BsK8gRdaQlXUrNW d31LbmHFJY5LhDVd6HlDBTY+D221vD9dzeZ8fISf6TWLdX3nzLM/ADxGrxaIRCLfTf toisi2mWaVyATbBsZePWvfPTx2LlY0p2mW2eEvflrrMJiNKGvzjexUUVxUOMCGLaAb twKNz1zygb4rb9HkKN9OxT6s84UbbN8i3oMPblhWAb6kWX645Un6IPpo8fuR+v7Te3 aOqjM6sAzlK/g== Received: from [192.168.1.49] (unknown [93.56.117.77]) by ms11p00im-qufo17291801.me.com (Postfix) with ESMTPSA id 37262AC011B for <9front@9front.org>; Mon, 26 Apr 2021 17:08:36 +0000 (UTC) From: Daniel Morandini Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.40.0.2.32\)) Date: Mon, 26 Apr 2021 19:08:33 +0200 References: To: 9front@9front.org In-Reply-To: Message-Id: <7A5D7DAF-4C1D-42FF-9570-9B8F7F685A8D@me.com> X-Mailer: Apple Mail (2.3654.40.0.2.32) X-Proofpoint-Virus-Version: =?UTF-8?Q?vendor=3Dfsecure_engine=3D1.1.170-22c6f66c430a71ce266a39bfe25bc?= =?UTF-8?Q?2903e8d5c8f:6.0.391,18.0.761,17.0.607.475.0000000_definitions?= =?UTF-8?Q?=3D2021-04-26=5F09:2021-04-26=5F03,2021-04-26=5F09,2020-04-07?= =?UTF-8?Q?=5F01_signatures=3D0?= X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 clxscore=1015 mlxlogscore=709 mlxscore=0 phishscore=0 suspectscore=0 adultscore=0 bulkscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2104260132 List-ID: <9front.9front.org> List-Help: X-Glyph: ➈ X-Bullshit: stable progressive plugin AJAX STM scripting layer Subject: Re: [9front] Getting Started with Kernel Development? Reply-To: 9front@9front.org Precedence: bulk Hi, > Ideally, I'd be able > to go back and forth between a known good kernel and whatever I'm > hacking at. I don't want to be backing up my SD card and restoring it > over and over again, if at all possible. Network boot [2]! Starting from rpi 2B v1.2, if you change the OTP field that allows USB boot mode [1], your SD slot becomes just a useful SD card reader. Otherwise you need the `bootcode.bin` file to be in the sd at boot time, but that does not have to change. Cheers, dan [1] = https://www.raspberrypi.org/documentation/hardware/raspberrypi/bootmodes/n= et.md [2] http://fqa.9front.org/fqa6.html#6.7=