If you do not have sufficient unallocated disk space, you can create space by shrinking or deleting some existing volumes.

如果没有足够的未分配空间，可以通过缩小或删除现有分区来创建这部分空间。

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If you do not meet the conditions, such as if you do not have unallocated disk space for a new system partition, setup attempts to use the existing system partition for boot files.

如果你不符合条件的，例如，如果你有未分配系统分区磁盘空间，安装程序试图利用现有的启动文件系统分区。

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It also makes it easier to find the files that have been created, accessed and modified during an attack, and it is able to reconstruct deleted files from raw data found in various hidden parts of a computer's hard disk, such as unallocated space and file slack.

ECONOMIST: Forensic computing studies the anatomy of computer crime