Date: Sun, 15 Mar 2020 15:39:33 -0600 From: Gary Aitken <freebsd@dreamchaser.org> To: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: SD card formatting Message-ID: <b7070f0e-a387-9c7e-945f-ab708f9f5a76@dreamchaser.org>
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11.3-RELEASE-p6 GENERIC amd64
I'm having trouble reading SD cards formatted in my camera (Olympus EM1-MkII)
or on a Win 7 system. When attempting to mount, I get the following:
$ mount -t msdosfs /dev/da0s1 /mnt/memstick
mount_msdosfs: /dev/da0s1: Invalid argument
$ mount -t ntfs /dev/da0s1 /mnt/memstick
mount: /dev/da0s1: Operation not supported by device
Cards used without formatting *usually* seem to work.
If I look at the cards which don't mount using gpart, I see:
Card formatted in camera:
$ gpart show -p /dev/da0
=> 63 120944577 da0 MBR (58G)
63 32705 - free - (16M)
32768 120911872 da0s1 ntfs [active] (58G)
$ gpart show -r /dev/da0
=> 63 120944577 da0 MBR (58G)
63 32705 - free - (16M)
32768 120911872 1 7 [active] (58G)
If I look at cards that I know I can mount I see the following:
$ gpart show -p da0
=> 63 30375873 da0 MBR (14G)
63 8129 - free - (4.0M)
8192 15118336 da0s1 fat32lba (7.2G)
15126528 15249408 - free - (7.3G)
$ gpart show -r /dev/da0
=> 63 30375873 da0 MBR (14G)
63 8129 - free - (4.0M)
8192 15118336 1 12 (7.2G)
15126528 15249408 - free - (7.3G)
or:
$ gpart show -p /dev/da0
=> 1 15633407 da0 MBR (7.5G)
1 31 - free - (16K)
32 15633376 da0s1 fat32 (7.5G)
$ gpart show -r /dev/da0
=> 1 15633407 da0 MBR (7.5G)
1 31 - free - (16K)
32 15633376 1 11 (7.5G)
I tried reformatting as follows:
# gpart delete -i 1 da0
da0s1 deleted
# gpart add -i 1 -a 4M -t "\!11" da0
da0s1 added
# gpart show -r da0
=> 63 120944577 da0 MBR (58G)
63 8129 - free - (4.0M)
8192 120930304 1 11 (58G)
120938496 6144 - free - (3.0M)
# newfs_msdos -F 32 /dev/da0s1
/dev/da0s1: 120900736 sectors in 1889074 FAT32 clusters (32768 bytes/cluster)
BytesPerSec=512 SecPerClust=64 ResSectors=32 FATs=2 Media=0xf0 SecPerTrack=63 Heads=255 HiddenSecs=0 HugeSectors=120930304 FATsecs=14759 RootCluster=2 FSInfo=1 Backup=2
If I put this card in the camera, I get an error ("Card Error")
If I again format the card in the camera, I can't mount it.
I need to reformat these cards so I can use them in the camera and on
freebsd, and apparently neither the camera nor win7 does that, so...
What's the right way to lay out, format, and create a file system on an
SD card so it is usable by cameras and windoze?
Thanks,
Gary
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