@Sebastian-Roth hereunder the requested extraction
I suppose that my issue is coming from the fact that my /dev/sdc2 is configured has a lvm_2_member.
EDIT: after It will be applied on usb stick pf 128 gb which is a lot to store on a VM afterward 
[root@laptop pla]# sfdisk -d /dev/sdc
label: dos
label-id: 0xf156c07c
device: /dev/sdc
unit: sectors
/dev/sdc1 : start= 2048, size= 1024000, type=83, bootable
/dev/sdc2 : start= 1026048, size= 30240768, type=8e
[root@laptop pla]# blkid -po udev /dev/sdc1 | grep FS_TYPE
ID_FS_TYPE=ext4
[root@laptop pla]# blkid -po udev /dev/sdc2 | grep FS_TYPE
ID_FS_TYPE=LVM2_member
[root@laptop pla]#
[root@laptop pla]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 5.8G 0 5.8G 0% /dev
tmpfs 5.8G 420K 5.8G 1% /dev/shm
tmpfs 5.8G 1.6M 5.8G 1% /run
tmpfs 5.8G 0 5.8G 0% /sys/fs/cgroup
/dev/mapper/fedora-root 13G 3.8G 8.2G 32% /
tmpfs 5.8G 84K 5.8G 1% /tmp
/dev/sdc1 477M 108M 340M 25% /boot
tmpfs 1.2G 8.0K 1.2G 1% /run/user/42
tmpfs 1.2G 24K 1.2G 1% /run/user/1000
/dev/sdd1 932G 897G 36G 97% /run/media/pla/Elements```