dd and ddfldd

Use for creating and copying iso files from and to a medium.

The dd command doesn't has a output during copy but dcfldd does. It gives an output all X blocks written. This means in the commands below you can also just replace dd with dcfldd.

Install

dcfldd install

sudo apt-get install dcfldd

On Linux

dd usage

# Create usb stick or sdcard => image
fdisk -l                                  # get disk info
unmount /dev/sdX                          # unmount disk
dd if=/dev/sdX of=/location/for/image.iso bs=1M conv=noerror,sync # copy usb stick to image

# Copy image => usb stick or sdcard
fdisk -l                                  # get disk info
unmount /dev/sdX                          # unmount disk
dd if=/location/of/image.iso of=/dev/sdX bs=1M conv=noerror,sync # copy image to usb stick

dd has no output normally, if you want to watch the status of the copy then open a new Terminal and try one of the following commands

watch dd

sudo kill -USR1 $(pgrep '^dd$')                            # dd will display status once
sudo watch -n <interval in sec> kill -USR1 $(pgrep '^dd$') # dd will display status continously

On MacOs

dd usage

# Create usb stick or sdcard => image
diskutil list                               # get disk info
diskutil unmountDisk /dev/diskX             # unmount disk
dd if=/dev/diskX of=/location/for/image.iso bs=1m # copy usb stick to image

# Copy image => usb stick or sdcard
diskutil list                              # get disk info
diskutil unmountDisk /dev/diskX            # unmount disk
dd if=/location/of/image.iso of=/dev/diskX bs=1m conv=noerror,sync # copy image to usb stick