From owner-freebsd-questions@freebsd.org Fri Jun 22 15:17:29 2018 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 53375101E85D for ; Fri, 22 Jun 2018 15:17:29 +0000 (UTC) (envelope-from freebsd@qeng-ho.org) Received: from bede.qeng-ho.org (bede.qeng-ho.org [217.155.128.241]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id EA51973F3D for ; Fri, 22 Jun 2018 15:17:28 +0000 (UTC) (envelope-from freebsd@qeng-ho.org) Received: from arthur.home.qeng-ho.org (arthur.home.qeng-ho.org [172.23.1.2]) by bede.qeng-ho.org (Postfix) with ESMTP id 916F410635; Fri, 22 Jun 2018 16:17:19 +0100 (BST) Subject: Re: Minimum size of freebsd-boot To: Manish Jain , FreeBSD Questions References: <024a7da5-4d80-960c-9479-34fef887ff35@yandex.com> From: Arthur Chance Message-ID: <2586284e-2d32-b318-0a3f-d55a381322d4@qeng-ho.org> Date: Fri, 22 Jun 2018 16:17:19 +0100 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <024a7da5-4d80-960c-9479-34fef887ff35@yandex.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Jun 2018 15:17:29 -0000 On 21/06/2018 17:15, Manish Jain wrote: > Hi, > > Under GPT, FreeBSD needs a freebsd-boot partition of max size 512 KB. Is > there a minimum size too ? It's a while since I looked at the boot loaders but it used to be that 512kB was the *maximum* partition size allowed and the first stage boot code would fail if it was bigger. This was with BIOS booting from a GPT disk. -- An amusing coincidence: log2(58) = 5.858 (to 0.0003% accuracy).