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On Thu, 12 Oct 2006 14:18:04 +0200 Helge Hafting <helge.hafting@aitel.hist.no> wrote: > I found an easy way to hang the kernel when copying a SD-card: > > dd if=/dev/sdc of=file bs=1048576 > > I.e. copy the entire 256MB card in 1MB chunks. I got about > 160MB before the kernel hung. Not even sysrq+B worked, I needed > the reset button. The pc has a total of 512MB memory if that matters. > > Using bs=4096 instead let me copy the entire card with no problems, > but that seems to progress slower. > > The above 'dd' command hangs my office pc every time. So I can repeat > it for debugging purposes. > What device driver is providing /dev/sdc? Did any previous kernels work correctly? If so, which? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||
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