Hi Stephen, On Thu, Mar 14, 2013 at 12:36 PM, Stephen Warren <swar...@wwwdotorg.org> wrote: > On 03/13/2013 08:51 PM, Sonic Zhang wrote: >> Hi Stephen, >> >> On Thu, Mar 14, 2013 at 1:11 AM, Stephen Warren <swar...@wwwdotorg.org> >> wrote: >>> On 03/11/2013 08:59 PM, Sonic Zhang wrote: >>>> Hi Stephen, >>>> >>>> On Tue, Mar 12, 2013 at 1:28 AM, Stephen Warren <swar...@wwwdotorg.org> >>>> wrote: >>>>> On 03/11/2013 03:56 AM, sonic....@gmail.com wrote: >>>>>> From: Sonic Zhang <sonic.zh...@analog.com> >>>>>> >>>>>> - Should return 0 for both DOS_MBR and DOS_PBR block types in >>>>>> test_part_dos(). >>>>> >>>>> What problem does this solve? >>>>> >>>>> I don't believe this change is correct. The purpose of test_part_dos() >>>>> is to determine whether a block device contains an MS-DOS partition table. >>>>> >>>>> Such a partition table is present in an MBR, but not a PBR. A PBR >>>>> contains a *FAT file-system, and does not include a partition table. >>>> >>>> The SD card formated by windows 7 into one FAT partition can't be >>>> initialized correct in u-boot function init_part() after you reuse the >>>> function test_block_type() in function test_part_dos(). So, files on >>>> that partition can't be displayed when running command "fatls mmc 0". >>>> >>>> The only difference in your change is to mark dos partition with flag >>>> DOS_PBR invalid. >>> >>> Hmmm. I obtained an SD card that had been formatted in Windows 7 >>> (inserted SD card, right-clicked on it in Explorer, selected Format, >>> selected default FAT32 options), and could not reproduce this issue. >>> >>> Can you give more explicit instructions on how to reproduce this >>> problem? Perhaps a hexdump of the first sector would also help, or >>> uploading a heavily compressed image of the SD card that I can dd onto mine. >>> >>> Also, what branch/commit of U-Boot are you using? >> >> You should create a FAT partition on your SD card other than FAT32. > > Windows didn't give me that option. Do I need a smaller SD card to get > that option? Can you simply upload a compressed disk image or a hex dump > of the first sector instead? >
Yes, you can use a small SD card such as 256M, 512M. Or create a small partition on your large SD card. Regards, Sonic _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
