Date: Tue, 19 Feb 2008 17:25:05 +0100 From: Hans Petter Selasky <hselasky@c2i.net> To: "=?utf-8?q?=C5=81ukasz?= Sromek" <lukasz.sromek@gmail.com> Cc: freebsd-usb@freebsd.org Subject: Re: Copying to usb flash drive corrupts files Message-ID: <200802191725.06156.hselasky@c2i.net> In-Reply-To: <32f529bc0802181358n3ac34ec2saa23bc658507ba8f@mail.gmail.com> References: <32f529bc0802180102m6fa12e32x1903e3a8b98a70b3@mail.gmail.com> <200802181730.17473.hselasky@c2i.net> <32f529bc0802181358n3ac34ec2saa23bc658507ba8f@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Monday 18 February 2008, =C5=81ukasz Sromek wrote: > > Maybe your memory stick is corrupted ? > > It works (tested today) under Windows. I have used it with several > linux distros in the past without problems. > > Things got even more weird today... Now copying with sync option > enabled don't help at all :( > > Besides, another strange problem appeared: > I copy some files to memory stick under FreeBSD > Reboot and read them under Windows (they contain errors, of course...) > Then I copy some files under Windows. > Another reboot into windows - I can see files that were copied under > FreeBSD (with errors) and Windows (no errors). > Reboot into FreeBSD. I mount memory stick ang guess what? I see only > files that were copied under FreeBSD :) Files copied during Windows > session disappeared... > > > What is the brand ? > > da0 at umass-sim0 bus 0 target 0 lun 0 > da0: <SigmaTel MSCN 0100> Removable Direct Access SCSI-4 device > da0: 1.000MB/s transfers > da0: 494MB (1012992 512 byte sectors: 64H 32S/T 494C) Hi, Is this some kind of phone ? Have you tried to "fsck_msdosfs" the partition where the FAT filesystem=20 resides ? Maybe you could do like this: dd if=3D/dev/urandom of=3D/tmp/myrandomfile bs=3D65536 count=3D64 Then copy that file to the flash. "umount" and "mount". Then copy the file= =20 back to your disk again. After that you do a: cat /tmp/myrandomfile | hexdump > /tmp/myrandomfile.txt Then you compare the two .txt files using "diff". =2D-HPS
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200802191725.06156.hselasky>