How can I delete all partion of my pen drive and create a single volume?
Well my proposed solution might sound harsh and will definitively delete everything on that pen-drive so make sure you use the right path. I write my answer now on that setup seen on your screen-shots.
Open a terminal by pressing ctrl+alt+t.
Then
# like said make sure you use the right path to your stick !!
sudo umount /dev/sdd1
sudo dd if=/dev/zero of=/dev/sdd1 bs=4MB
Let this run for a while (it will take a moment to write zero on 8 GB doing 4 MB steps).
after that nothing should be on that drive anymore and you should be able to start over fresh.
This problem is caused caused by a low-level device tools writing blocks at the wrong size directly onto the device.
To fix this, you will have to re-write the device blocks to the appropriate size. To do this open terminal(Ctrl+Alt+T) and enter the following command
sudo dd if=/dev/zero of=/dev/sdX bs=2048 && sync
Rember to replace sdX
with the actual device for your flash drive.
After doing this you can create a new partition using gparted or by terminal using
To format as fat32
sudo mkfs.vfat /dev/sdX1
To format ad ntfs
sudo mkfs.ntfs /dev/sdX1
To format as EXT4
sudo mkfs.ext4 /dev/sdX1
STEP 1: install GParted Partition Editor.
sudo apt-get install gparted
STEP 2: open gparted
and insert pendrive. Then click on Gparted > devices and select your device.
STEP 3: delete all partitions and submit.