Fred wrote:
> Hi,
> As supplied the SD cards are intended to work with Windows.  Under
> Linux only root can write to them and the ownership can not be
> changed.  I want preserve permissions of data written to the card.
>
> root@aragog:# /sbin/fdisk -l /dev/sdb
> Disk /dev/sdb: 27.48 GiB, 29504831488 bytes, 57626624 sectors
> Disk model: Card-Reader
> Units: sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disklabel type: dos
> Disk identifier: 0x00000000
>
> Device     Boot Start       End   Sectors  Size Id Type
> /dev/sdb1       32768 124735487 124702720 59.5G  7 HPFS/NTFS/exFAT
>
> I don't know why the size is reported differently in two places.  It
> is a 64GB card.
>

A couple things come to mind.  Yes, it could be an acutal 32 GB card
that was designed to appear as 64 GB (as was already mentioned).
Another possibility: is it an issue with the "Card-Reader" device? 
Check the card in another computer or with a different card reader, does
it still appear 32 GB?
One other possibility (but less likely IMO), if the card is put back
into Windows machine, does it appear as 64 GB?