要给家里一台老电脑降级 macOS 系统，发现没法制作启动盘了，提示如下，看起来都乱码了
➜ MyVolume sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
/Applications/Install macOS Big Sur.app/Contents/Resources/createinstallmedia: line 1: PO��A�t�z�����: command not found
/Applications/Install macOS Big Sur.app/Contents/Resources/createinstallmedia: line 7: �e����dO����-���: command not found
/Applications/Install macOS Big Sur.app/Contents/Resources/createinstallmedia: line 7: �T�/H�ѧ$: No such file or directory
/Applications/Install macOS Big Sur.app/Contents/Resources/createinstallmedia: line 8: ��m�#�Y�u��N���
W: command not found
/Applications/Install macOS Big Sur.app/Contents/Resources/createinstallmedia: line 8: C�Ƙ������N0�S�8��T�: command not found
/Applications/Install macOS Big Sur.app/Contents/Resources/createinstallmedia: command substitution: line 7: syntax error near unexpected token {�r��I��' /Applications/Install macOS Big Sur.app/Contents/Resources/createinstallmedia: command substitution: line 7: i��Q��^�ހ�1ȭ�������Ē��p����{�jH��l'ƔKQ�=.��J����wf��:9�j^�E���X�AKX�F��&4���fV[�%��
/Applications/Install macOS Big Sur.app/Contents/Resources/createinstallmedia: line 7: �T���Љ��놘Y
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���R�^9�E�j�s�Db��'��{P}Bn�bYԆ�H��T��}H����G���>��U���Nc��2Z�����_�݉���HęT �o⮬���A��[�[�4-�E���{��g��E�Bca3���z 憊 y�{��旃��v�: File name too long
/Applications/Install macOS Big Sur.app/Contents/Resources/createinstallmedia: line 10: syntax error near unexpected token }�I��.��ǩ�wa�Pf 尮 n2s,��LX'��b���M�������i ��ǩ�wa�Pf 尮 n2s,��LX's���Ms�e�#�9���/���h�(}�I��.���$^��pri����6��qT���b���M�������i0: `�0�@�;�,w�a�#�Nb��u+MVv�k*4')��>;5��m
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