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I've tried the solution from this question, but even with exfat-fuse and exfat-utils installed, I can't mount my SDXC card (formatted in my Canon T3i camera).

ls -l /dev/sd* reports:

brw-rw---- 1 root disk 8,  0 Dec 29 17:10 /dev/sda
brw-rw---- 1 root disk 8,  1 Dec 29 16:14 /dev/sda1
brw-rw---- 1 root disk 8,  2 Dec 29 16:42 /dev/sda2
brw-rw---- 1 root disk 8,  5 Dec 29 16:14 /dev/sda5
brw-rw---- 1 root disk 8, 16 Dec 29 17:16 /dev/sdb

I do note that I'm not seeing /dev/sdb1.

fdisk -l /dev/sdb reports:

You must set cylinders.
You can do this from the extra functions menu.

Disk /dev/sdb: 0 MB, 65536 bytes
255 heads, 63 sectors/track, 0 cylinders, total 128 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1           32768   125171711    62569472    7  HPFS/NTFS/exFAT

Again, I note a couple things: I'm told I need to set cylinders, which I'm not sure how to do; and I see that the partition starts at 32768 instead of 0 or thereabouts.

The card mounts fine on my Windows 7 system, and in my camera. I tried formatting it NTFS on my Windows box but my camera rejected it, so I did a low-level format with the camera to get things back to square one.

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Pat J
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  • Not sure if this works on linux too, but diskutil list shows all of your disks. Maybe you did not mount it – vita-min Dec 29 '16 at 23:27
  • I can't mount it. Ubuntu doesn't see it as a proper partition, for whatever reason. – Pat J Dec 30 '16 at 00:28
  • might want to go here – vita-min Dec 30 '16 at 00:38
  • I searched through Ask Ubuntu before I asked the question. Most of the solutions seemed to be "install exfat-fuse and exfat-utils and you're good to go. That's not the situation in which I find myself, unfortunately. – Pat J Dec 31 '16 at 01:22
  • Just in case it helps anyone else: My problem was that the SD-to-USB card reader I was using was incompatible with my SDXC card. A new card reader that supports SDXC was the solution. – Pat J Jun 17 '17 at 00:28

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