Since you are formatting this partition, you should correct this problem now by realigning the partition, as it will be difficult to change later. To do this, go back to the main partitioning menu, delete the partition, and recreate it in the same position with the same settings. This will cause the partition to start at a point best suited for this disk.
Imi i tmesleḍ aḥric-a, ilaq ad tseɣtiḍ tura ugur-a s wallus n ureyyec n uḥric, acku ad yiwɛir ubeddel-ines mbeɛd. I wakken ad tgeḍ aya, uɣal ɣer wumuɣ n beṭṭu agejdan, kkes aḥric-nni syen ales timerna-ines deg yideg-nni kan s yiɣewwaren-nni kan. Aya ad yerr asenker n uḥric ad d-yebdu seg wadeg i iwatan xiṛ i uḍebsi-a.