Back in 2012 I created a 7.5GB file namedSD-card.2012.dd-bs1024-1.ec6a4994f4148912abb199505b98f01gMy guess is that I ran dd on an 8GB SD card from one of my cameras.  Why? Can't remember.I confirmed that ec6a4994f4148912abb199505b98f01g in its filename is its md5sum, so the file is intact relative to whenever I added its sum to its name.file reports that is data.partx reports 'failed to read partition table'. never used partx before.fdisk reports 'doesn't contain a valid partition table'sudo losetup  -f <filename> puts it at /dev/loop0 as reported by losetup  -a, but doesn't make any loop0pN, and my subsequent attempts at mount -t <type> /dev/loop0 <mount-point> fail as above.mount -o loop -t auto fails, saying I need to specify the filesystem type.  It also fails if I specify vfat or ntfs.Seeking advice on how to proceed.
How to access/mount an unknown type of file?
files;mount;dd;loop device