Date: Tue, 21 Dec 2010 11:20:30 +0200 From: Andriy Gapon <avg@freebsd.org> To: Lev Serebryakov <lev@serebryakov.spb.ru> Cc: freebsd-geom@freebsd.org Subject: Re: FreeBSD 8.2-PRERELASE doesn't see slice on SDHC card in cardreader ?-- what should I do? Message-ID: <4D10715E.9010909@freebsd.org> In-Reply-To: <1279680207.20101221121235@serebryakov.spb.ru> References: <159888671.20101221024723@serebryakov.spb.ru> <201012210811.oBL8Bv1I083482@lurza.secnetix.de> <4D106702.7000608@freebsd.org> <1279680207.20101221121235@serebryakov.spb.ru>
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on 21/12/2010 11:12 Lev Serebryakov said the following: > Hello, Andriy. > You wrote 21 декабря 2010 г., 11:36:18: > >> on 21/12/2010 10:11 Oliver Fromme said the following: >>> Lev Serebryakov <lev@serebryakov.spb.ru> wrote: >>> > I inserted 16Gb SDHC card, with one FAT32 slice (it is card from my >>> > PDA). After that I've tried: >>> > [...] >>> > blob# ls /dev/da0* >>> > /dev/da0 >>> >>> # /bin/dd if=/dev/null of=/dev/da0 count=0 >>> >>> Then try again. > $ true > /dev/da0 >> is shorter and less prone to typos. > It works! But it is not intiutive at all :) Why all CAM-related > commands like "load" and "open" don't work (I don't mention > auto-sensing ;-))? Is it problem with my cardreader or common > problem for FreeBSD? It's kind of both. The issue results from interactions between timings in usb, cam and geom with some slower hardware. Essentially, as I understand the situation, when geom is notified about a new disk and tries to taste it for partitions, the hardware is not fully ready yet. -- Andriy Gapon
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