Date: Mon, 4 Jan 2016 13:36:14 -0700 From: Warner Losh <imp@bsdimp.com> To: Toby <misc.lists@fsck.ch> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: Booting a RPI 1 B+ Message-ID: <CANCZdfqusiGrdU4YOKF0MWiCR8F_2Yyg1k4umpKBoMkKN4RcaA@mail.gmail.com> In-Reply-To: <568AC167.7030006@fsck.ch> References: <56840940.20709@aon.at> <C848956A-978D-4F93-AA0B-971908402A69@kientzle.com> <568AC167.7030006@fsck.ch>
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On Mon, Jan 4, 2016 at 12:00 PM, Toby <misc.lists@fsck.ch> wrote: > On 31/12/15 00:36, Tim Kientzle wrote: > > > You should consider getting a USB serial adapter cable such as: > > > > http://adafru.it/954 > > > > This will let you see the earliest boot messages and any errors that may > be appearing. > > > > As others have mentioned, it's worth trying different SDHC cards, since > the SD drivers do not seem to be compatible with all cards. > > I can only second the former. I managed to fill my disk with a typo in a > dd command on a running pi, after which I never got it to boot again > with just a blank screen on hdmi. With a USB serial adapter, I could > have fixed the problem right away. > Instead, I needed to write the sd card content to a file, copy the file > to a freebsd vm (my primary machine is a mac and can't mount UFS rw), > fsck it there, mount it, fix the damage, unmount and write the file back > to the sd card. > > As for the latter, Transcend cards have worked fine for me. > If anybody has an SD card that actually doesn't work, I'd be keen to borrow it so I can chase down the problem. The SD driver supports all SD cards, without qualification. If one doesn't work with the mmc/sd driver, but does with, say, a USB adapter, that's a bug. And I'd really like to chase that bug down. Warner
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