From owner-freebsd-arm@freebsd.org Tue Mar 12 23:21:40 2019 Return-Path: Delivered-To: freebsd-arm@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 647861542AEC for ; Tue, 12 Mar 2019 23:21:40 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Received: from www.zefox.net (www.zefox.net [50.1.20.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "www.zefox.org", Issuer "www.zefox.org" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id A2B0D8B876 for ; Tue, 12 Mar 2019 23:21:39 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Received: from www.zefox.net (localhost [127.0.0.1]) by www.zefox.net (8.15.2/8.15.2) with ESMTPS id x2CNKcaZ002202 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 12 Mar 2019 16:20:39 -0700 (PDT) (envelope-from fbsd@www.zefox.net) Received: (from fbsd@localhost) by www.zefox.net (8.15.2/8.15.2/Submit) id x2CNKcn3002201; Tue, 12 Mar 2019 16:20:38 -0700 (PDT) (envelope-from fbsd) Date: Tue, 12 Mar 2019 16:20:38 -0700 From: bob prohaska To: freebsd-arm@freebsd.org Subject: Can't read GPT header on rpi3 Message-ID: <20190312232038.GA2084@www.zefox.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) X-Rspamd-Queue-Id: A2B0D8B876 X-Spamd-Bar: ++++ Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [4.47 / 15.00]; ARC_NA(0.00)[]; WWW_DOT_DOMAIN(0.50)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; NEURAL_SPAM_SHORT(0.82)[0.816,0]; IP_SCORE(0.16)[ip: (0.60), ipnet: 50.1.16.0/20(0.30), asn: 7065(-0.03), country: US(-0.07)]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; DMARC_NA(0.00)[zefox.net]; AUTH_NA(1.00)[]; NEURAL_SPAM_MEDIUM(0.69)[0.692,0]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; MX_GOOD(-0.01)[cached: www.zefox.net]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_SPAM_LONG(0.92)[0.916,0]; R_SPF_NA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:7065, ipnet:50.1.16.0/20, country:US]; MID_RHS_MATCH_FROM(0.00)[]; MID_RHS_WWW(0.50)[] X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Mar 2019 23:21:40 -0000 When rebooting an rpi3 running -current as of a couple days ago the console sometimes reports Scanning disk mmc@7e300000.blk... Scanning disk usb_mass_storage.lun0... *** ERROR: Can't read GPT header *** part_get_info_efi: *** ERROR: Invalid GPT *** *** ERROR: Can't read GPT header *** part_get_info_efi: *** ERROR: Invalid Backup GPT *** *** ERROR: Can't read GPT header *** part_get_info_efi: *** ERROR: Invalid GPT *** *** ERROR: Can't read GPT header *** and gets stuck in the loop. Power-cycling the Pi3 seems to clear the difficulty. The microSD card is relatively new, a Samsung Evo + 128GB. It's only happened about three times, so statistics are somewhat lacking. If anybody's got a suggestion for things to check please do. Thanks for reading, bob prohaska