一回こっきりなら
体験版でできるかも
https://www.easeus.com/ppc/partition-manager/partition-manager-jp.html?gclid=CjwKCAiA47DTBRAUEiwA4luU2U6_TMGk4_7gUM3PHa10Ppv_sT030zTeE_55g_oJphTMV7mxYv-aihoC5EUQAvD_BwE