Date: Mon, 10 Oct 2011 17:30:23 +1100 From: Mattia Rossi <mrossi@swin.edu.au> To: freebsd-arm@freebsd.org Subject: Create FAT partition/filesystem on the internal microSD flash of the Dreamplug Message-ID: <4E9290FF.7090306@swin.edu.au>
next in thread | raw e-mail | index | archive | help
Hi all again, I've now been on to this for quite a while, but just can't get it to work. I've mistakenly blown away the partitioning scheme that the dreamplug came with originally, therefore also the FAT boot partition. I've tried to recreate it using gpart and newfs_msdos, but can't create any new FAT partition that mount_msdosfs would mount. See: dreamplug# gpart create -s mbr da0 da0 created dreamplug# gpart add -t fat32 -i 1 -s 32M da0 da0s1 added dreamplug# newfs_msdos da0s1 /dev/da0s1: 65416 sectors in 8177 FAT16 clusters (4096 bytes/cluster) BytesPerSec=512 SecPerClust=8 ResSectors=1 FATs=2 RootDirEnts=512 Sectors=65520 Media=0xf0 FATsecs=32 SecPerTrack=63 Heads=255 HiddenSecs=0 dreamplug# mount_msdosfs /dev/da0s1 /mnt/usb mount_msdosfs: /dev/da0s1: Invalid argument I've tried to change the partition type to 6 and 4 and to freebsd (165), but didn't help. I also tried to set the start of the partition (-b) to 64, 128 and 192 but nothing there either. Trying to tune newfs_msdos to use FAT 12 or FAT 32 and different bytes/sec or a different mediatype (0xf8) and a variety of tweaks did not help either. It seems that I can't create a mountable FAT partition. I believe the problem is that gpart create -s mbr starts the partitioning scheme at an offset of 63 sectors, while the one on the external SD card I have (pre-partitioned not using FreeBSD) has an offset of 32 sectors. I couldn't find any documentation that tells me how to tell gpart create to use a different offset. Any hints? Mat
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4E9290FF.7090306>