Date: Mon, 2 Nov 2015 13:43:32 +0100 From: Hans Petter Selasky <hps@selasky.org> To: "Ranjan1018 ." <214748mv@gmail.com> Cc: freebsd-usb@freebsd.org Subject: Re: Non working USB stick in FreeBSD. Message-ID: <56375A74.2040704@selasky.org> In-Reply-To: <CACyC=qZrm835UW86F4ToCGr7qrF0nLJE8z2Pc7s%2BDizjDLz6nA@mail.gmail.com> References: <CACyC=qYACm5EeswCwX6rBZ6nqCR3=yVszbg0ZYHWXmBPFN6HiA@mail.gmail.com> <562FA2E8.1020003@selasky.org> <CACyC=qZrm835UW86F4ToCGr7qrF0nLJE8z2Pc7s%2BDizjDLz6nA@mail.gmail.com>
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On 10/29/15 10:29, Ranjan1018 . wrote: > 2015-10-27 17:14 GMT+01:00 Hans Petter Selasky <hps@selasky.org>: > >> On 10/27/15 17:05, Ranjan1018 . wrote: >> >>> I have a 64GB USB stick that works correctly in Windows and Linux but not >>> in FreeBSD. The problem is during the write. >>> >>> In FreeBSD I have tested the stick with the command: >>> >>> # dd if=/dev/zero of=/dev/daX bs=1m >>> >>> and, after some time, I received these errors in i386 and amd64: >>> >>> >> Hi, >> > > Hi Hans, > thank you for your answer. > >> >> Are you sure the disk is of the size advertised? >> > > In Linux I obtain: > > $ uname -a > > Linux phenom2 3.2.0-4-amd64 #1 SMP Debian 3.2.57-3+deb7u2 x86_64 GNU/Linux > > $ sudo dd if=/dev/zero of=/dev/sdf obs=1M seek=8100 > > dd: writing to `/dev/sdf': No space left on device > > 114485248+0 records in > > 55900+0 records out > > 58615398400 bytes (59 GB) copied, 20869.4 s, 2.8 MB/s > > > >> How many 512-byte blocks are successfully written? >> >> In FreeBSD : > > # uname -a > > FreeBSD microserver 10.2-STABLE FreeBSD 10.2-STABLE #4 r289314M: Wed Oct 14 > 15:38:08 CEST 2015 root@microserver:/usr/obj/usr/src/sys/GENERIC amd64 > > # dd if=/dev/zero of=/dev/da0 bs=1m > > dd: /dev/da0: Input/output error > > 8140+0 records in > > 8139+0 records out > > 8534360064 bytes transferred in 3013.528065 secs (2832016 bytes/sec) > > # uname -a > > FreeBSD qbic 10.1-STABLE FreeBSD 10.1-STABLE #0: Sat May 9 07:53:21 CEST > 2015 root@ativ:/usr/obj/i386.i386/root/TEMP/i386_SRC/src/sys/KSTACK_PAGES_4 > i386 > > [root@qbic ~]# dd if=/dev/zero of=/dev/da2 bs=1m > > dd: /dev/da2: Input/output error > > 8140+0 records in > > 8139+0 records out > > 8534360064 bytes transferred in 3011.855356 secs (2833589 bytes/sec) > > # uname -a > > FreeBSD ativ 11.0-CURRENT FreeBSD 11.0-CURRENT #10 r289378M: Thu Oct 15 > 21:57:57 CEST 2015 root@ativ:/usr/obj/usr/src/sys/GENERIC amd64 > > [root@ativ ~]# dd if=/dev/zero of=/dev/da1 bs=1m > > dd: /dev/da1: Input/output error > > 8140+0 records in > > 8139+0 records out > > 8534360064 bytes transferred in 3041.663436 secs (2805820 bytes/sec) > > [root@ativ ~/bin]# dd if=/dev/zero of=/dev/da1 bs=1m seek=12140 > > dd: /dev/da1: Input/output error > > 69+0 records in > > 68+0 records out > > 71303168 bytes transferred in 35.119861 secs (2030280 bytes/sec) > > [root@ativ ~/bin]# dd if=/dev/zero of=/dev/da1 bs=1m seek=12200 > > dd: /dev/da1: Input/output error > > 9+0 records in > > 8+0 records out > > 8388608 bytes transferred in 13.562622 secs (618509 bytes/sec) > Hi, What does "dmesg" say after these errors? Maybe you have a bad sector? Did you try to add "conv=noerror" to dd ? Did you try "bs=65536" or "bs=512" ? --HPS
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