极客狂

硬盘格式化并覆盖数据后还能恢复吗

If the disk was only formatted and no new data was written over it, the old data is still there and can potentially be recovered. Formatting usually just deletes the file system pointers, leaving the actual data intact until it gets overwritten by new files. So, if you stop using the drive immediately, recovery software might still be able to find those original files.

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确实如此，很多人以为格式化就万事大吉了。其实只要没进行全盘擦除或覆盖写入，底层数据块还是原封不动的。所以一旦误格式化，千万别再往盘里存任何东西，这时候用专业工具恢复成功率还挺高的。

其实楼上的说法有点片面了。现在的NTFS或exFAT文件系统，尤其是执行了快速格式化，确实只是删了索引，数据还在。但如果是**慢速格式化**或者后续稍微写了点东西（比如系统后台索引），恢复概率就大打折扣了。而且现在SSD普及了，TRIM指令一执行，数据基本就灰飞烟灭了，根本不像机械硬盘那么简单。