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用终端覆盖硬盘时出错
Tituss-MBP:~ tituswong$ diskutil secureErase freespace 0 /dev/disk1 Started erase on disk1 Macintosh HD Creating a temporary file Securely erasing a file Creating a secondary temporary file Mounting disk Error: -69847: Couldn't create temporary file Underlying error: 1: POSIX reports: Operation not permitted 这是错误。我试过sudo但它没有用。我正在使用OS X El Captain有人知道如何解决这个问题吗?