我们都去过那里,有一个存储设备发生了某种故障,使我们的宝贵数据处于危险之中。但是,当所讨论的设备是microSD卡时,你会怎么做呢?今天的超级用户问答帖子来拯救一个需要帮助的读者。
今天的问答环节是由SuperUser提供的,SuperUser是Stack Exchange的一个分支,是一个由社区驱动的问答网站分组。
图片由Seeweb(Flickr)提供。
超级用户阅读器RockPaperLizard想知道是否有可能从无法读取的microSD卡中恢复数据:
I am trying to help a friend who is very concerned that she has just lost all of the data on her 32 GB SanDisk microSD card. I told her I would post this and see if anyone could help.
Here are the details:
Here is what she has tried:
She does not have access to a Linux computer, but does have access to her Android phone. What can she do to recover the data from her microSD card?
从这张microSD卡上恢复数据有希望吗?
超级用户贡献者Bob为我们提供了答案:
You could try pressing the card together (in case it became a little loose?) and maybe cleaning the contacts with a little bit of Isopropyl alcohol on a swab. But I really would not expect any results, and at best you might manage to read some of the data off of it before it dies again. I would not recommend opening it up under any circumstances. That will not help with recovery at all and it will likely cause further damage.
You could also try various alternative readers. If you manage to find one that can at least expose the card as a block device, then you can take an image of the data. While recovering useful data from an image of damaged media is a whole other exercise, it is still better than where you are now.
Sometimes, there just is not anything that can be done. If the data is very important, you could c***ider professional data recovery services (do they even exist for SD cards?), but they would be very expensive. Otherwise, she might just have to accept the loss and try to recreate what she can.
When a storage device becomes physically unreadable, undetectable even, you cannot go through the normal home data recovery steps (take image, scan for what files you can, etc.). With a mechanical drive, at least common failure modes are partial, so you can at least read something. With the nature of NAND storage, I can think of three possibilities:
The problem with all of these is that they require very expensive and still uncertain services to even attempt a recovery. Is the data worth that much?
Perhaps the best thing to do is to treat this as a lesson on backups. Always have at least one extra copy of any data you cannot afford to lose. The more important it is, the more copies you want, stored separately from each other.
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