It appears that your installation medium was generated using UNetbootin. UNetbootin is regularly linked with difficult or unreproducible problem reports from users; if you have problems using this installation medium, please try your installation again without using UNetbootin before reporting issues.
Yettban wallal-inek·inem n usebded yettusirew s useqdec n UNetbootin. UNetbootin yezga yeqqen ɣer yineqqisen n wuguren i iweɛren neɣ ur nettales ara afares sɣur iseqdac; ma yella tesɛiḍ uguren s useqdec n wallal-a n usebded, ttxil-k·m ɛreḍ asebded i tikkelt-nniḍen war aseqdec n UNetbootin send tuzna n wuguren.