I have never used a Mac before and have no idea what I'm doing. I need to run dd on a USB device to copy data off. I plug the device in, and it shows up in system_profiler SPUSBDataType. How do I find the /dev entry for this device? I tried comparing ls -R, no dice. I tried the advice in this question and the linked one in its comment, but no dice. Help.
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1 Answer
Does the system_profiler SPUSBDataType output specify a BSD Name for the device? If so, prepend it with /dev/ and you'll have a device name for your device.
For a USB storage device, the resulting name should be something like /dev/disk2 for the whole device, and /dev/disk2s1 for its first partition.
With dd, you'll probably have to use the raw access versions of the respective devices, i.e. /dev/rdisk2 or /dev/rdisk2s1 respectively.
If there is no entry like BSD Name: disk2 in the system_profiler SPUSBDataType output, then your device might not be a USB storage device, but some other type of USB device, and you should edit your question to tell more about the exact type of the device and what you wish to achieve with it.
