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I'm trying to pull the partition /dev/block/mmcblk0 directly to my Windows PC, following the instructions from: How to pull mmcblk0 to a windows pc? while the phone is in TWRP, using the command:

adb pull /dev/block/mmcblk0 mmcblk0.img

But it keeps returning the error:

remote object '/dev/block/mmcblk0' not a file or directory

What am I doing wrong?

Thanks in advance.

Additional information: The reason that I want to do this is because I want to restore deleted files from a Samsung Galaxy S4 Mini (GT-I9195), so I need the entire partition.

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    It looks like you only read the question you linked to, not the answers. The question specifically asks why the command you mentioned doesn't work, and Rhaegar's answer explains what you have to do instead. – Dan Hulme May 2 '16 at 6:48
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adb pull is for files. /dev/block/mmcblk0 is a block device. user1133275's answer to that question doesn't work; try the other one, i.e. run adb shell and then:

$ su
# dd if=/dev/block/mmcblk0 of=/sdcard/something.bin

Then you can run adb pull /sdcard/something.bin.

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