If it's an accidental deletion or format, stop using that drive immediately — every new file written reduces the chance of recovery. Software recovery (we use industry-standard tools) has a good success rate if caught early. If the drive is physically damaged (clicking noises, not detected at all), it needs a specialist clean-room lab — costly, but sometimes the only option for truly critical data like a thesis or years of photos. We've recovered everything from accidentally-deleted camera memory cards to a blue-screen-looping desktop with unsaved thesis data.

如果是误删或误格式化，立刻停止使用那块盘——每多写入一个新文件，恢复几率就降低一分。软件层面的恢复(我们用行业标准工具)只要发现得早，成功率通常不错。如果是硬盘物理损坏(有咔哒声、完全识别不到)，就需要专业无尘室实验室处理，费用较高，但对论文、多年照片这种真正重要的数据有时是唯一办法。我们处理过从误删的相机内存卡到蓝屏循环、论文数据还没保存的台式机等各种情况。