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I have a small collection of disk images that were made of entire disks. They were made as physical images, by which I mean that the device file was supplied without a side specified – i.e. dd if=/dev/disk3 of=~/Desktop/image.001 rather than say dd if=/dev/disk3s1 of=~/Desktop/image.001 to image the volume on the disk.

I am having trouble mounting these images now. I understand that when mounting physical disk images you must specify a byte offset (obtained perhaps using fdisk). However when I run fdisk -lu ~/Desktop/image.001 it tells me that the offset is 1 (512 bytes)?? This seams improbable, and when mounting via the means laid out here, it tells me "wrong fs type, bad option, bad superblock…" "missing codepage or helper program…"

What am I doing wrong?? How can I mount these images? There is only one volume on the partition, and it contains an Ext2 filesystem. Thanks in advance for any help.

  • man fdisk says, about -u: When listing partition tables, show sizes in 'sectors' or in 'cylinders'. The default is to show sizes in sectors.. Are you sure you have the correct sector size? If you had an incorrect sector size, this exact problem would happen. – waltinator Aug 3 '16 at 0:03

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