#!/bin/bash
echo "=== make_stick.sh ==="
echo "copy 1:1 image.iso to (hopefully bootable) usb stick"
echo "(some usb sticks can not boot)"
echo "first parameter: the drive to write to in the format /dev/sdx"
echo "second parameter: the image.iso"

if [ -z "$1" ]
  then
    echo "please pass device like this: /dev/sdx
          TARGET THE WHOLE DEVICE (sdb)
          NOT A PARTITION! (sdb1)"
  else

    echo ""
    echo "please read carefully, a mistake could overwrite critical data"
    echo "physically disconnect all critical data-drives before procedure"
    echo ""
    echo "========== do you want to copy the $2 image on device $1 ?"
    echo ""
    echo "=========== harddisk overview";
    echo "==== where is what";
    lsblk -o 'NAME,MAJ:MIN,RM,SIZE,RO,FSTYPE,MOUNTPOINT,UUID'
    echo "==== harddisk usage";
    df -Th;
    echo ""
    echo "==== info about this specific harddisk:";
    hdparm -I $1 | grep Model
    echo ""

read -p "Continue (y/n)?" choice
case "$choice" in 
  y|Y ) echo "yes";;
  n|N ) echo "no";;
  * ) echo "invalid";;
esac
    umount $1*;
    dd if=$2 of=$1 status=progress; sync;

    # if the image.iso.gz is compressed, unpack on the fly
    ## multi core
    ### pigz -dc /media/user/EXTERNALHARDDISK/software/iso/IdealLinux/IdealLinux2021.usb.stick.img.gz | pv | dd bs=1M of=$1; # write image to usb stick
    ## single core
    ### gunzip -c /run/media/user/SOFTWARE/LINUX/ideal-linux-stick/ideal-linux-usb_stick_image_full_16GByte_2017-04.img.gz | pv | dd of=$1; # write image to usb stick

    echo "the image $2 was written to stick $1. process finished. try booting it now :)"
fi