microsd卡无法读取

We have all been there and had a storage device of some kind experience a failure, leaving our precious data at risk. But what do you do when the device in question is a microSD card? Today’s SuperUser Q&A post comes to the rescue for a reader in need.

我们到过那里并且让某种类型的存储设备发生故障，使我们的宝贵数据处于危险之中。 但是，当所涉及的设备是microSD卡时，您该怎么办？ 今天的“超级用户问答”帖子可为有需要的读者提供帮助。

Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites.

今天的“问答”环节由SuperUser提供，它是Stack Exchange的一个分支，该社区是由社区驱动的Q＆A网站分组。

Photo courtesy of Seeweb (Flickr).

照片由Seeweb(Flickr)提供。

问题 (The Question)

SuperUser reader RockPaperLizard wants to know if it is possible to recover data from a microSD card that cannot be read:

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.

我正在尝试帮助一个非常担心她刚刚丢失32 GB SanDisk microSD卡上的所有数据的朋友。 我告诉她我会发布此消息，看看是否有人可以提供帮助。

Here are the details:

详细信息如下：

1. The microSD card is less than two years old (probably about a year old). The store will take it back, but that does not really help. She wants her data.microSD卡的使用期限不到两年(大约一年)。 商店会收回它，但这并没有真正的帮助。 她想要她的数据。
2. She used the card in her Samsung Galaxy S4 smartphone for over a month. The phone was never exposed to water or temperature extremes.她在三星Galaxy S4智能手机中使用了该卡超过一个月。 手机从未暴露于水或极端温度下。

3. Today, her phone suddenly said something along the lines of: “Your SD card is blank or an unsupported format.“

   今天，她的电话突然说了几句：“ SD卡为空白或不受支持的格式。 “

4. Her phone was then unable to read the microSD card at all.然后，她的手机根本无法读取microSD卡。

Here is what she has tried:

这是她尝试过的方法：

1. Rebooting her phone had no effect.重新启动手机没有效果。
2. She took the microSD card out and put it inside a full-size SD card adapter, then inserted it into a Windows 7 SP1 computer. The computer did not recognize its presence at all.她将microSD卡取出并放入完整尺寸的SD卡适配器中，然后将其插入Windows 7 SP1计算机中。 计算机根本无法识别它的存在。

3. She then put the microSD card into a USB 2.0 external card reader and inserted the card reader into a USB port on a Windows 7 SP1 computer. The computer recognized the card reader and installed drivers for it. The card reader shows up as ‘Removable Disk’ in Windows Explorer, but clicking on ‘Removable Disk’ in Windows Explorer results in the error: “Insert disk: Please insert a disk into the Removable Disk.“

   然后，她将microSD卡放入USB 2.0外部读卡器中，然后将读卡器插入Windows 7 SP1计算机的USB端口中。 计算机识别出读卡器并为其安装了驱动程序。 读卡器在Windows资源管理器中显示为“可移动磁盘”，但是在Windows资源管理器中单击“可移动磁盘”会导致错误：“插入磁盘：请将磁盘插入可移动磁盘。 “

4. After trying #3, she tried opening the ‘Removable Disk’ in FreeCommander. Doing so resulted in the error: “The device is not ready.“

   尝试＃3之后，她尝试在FreeCommander中打开“可移动磁盘”。 这样做会导致错误：“设备尚未准备就绪。 “

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?

她无法使用Linux计算机，但可以使用她的Android手机。 她该怎么做才能从microSD卡中恢复数据？

Is there any hope of recovering the data from this microSD card?

是否有希望从该microSD卡中恢复数据？

答案 (The Answer)

SuperUser contributor Bob has the answer for us:

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.

您可以尝试将卡按在一起(以防它变得有些松动？)，并可能用棉签上的一点异丙醇清洁触点。 但是我真的不希望有任何结果，充其量您可能会设法从中读取一些数据，然后再次死亡。 我不建议在任何情况下都将其打开。 这根本无法帮助恢复，并且可能导致进一步的损坏。

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.

您也可以尝试使用各种其他阅读器。 如果您设法找到至少可以将该卡作为块设备公开的卡，则可以拍摄数据图像。 从损坏的媒体映像中恢复有用数据是另一回事，但这仍然比您现在要好。

Sometimes, there just is not anything that can be done. If the data is very important, you could consider 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.

有时，什么也做不了。 如果数据非常重要，则可以考虑使用专业的数据恢复服务(SD卡中是否存在这些服务)，但是它们的价格非常昂贵。 否则，她可能只需要接受损失并尝试重新创造自己能做的。

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:

当存储设备在物理上变得不可读，甚至无法检测时，您将无法执行正常的家庭数据恢复步骤(拍摄图像，扫描可以找到的文件等)。 对于机械驱动器，至少常见的故障模式是局部的，因此您至少可以阅读一些内容。 借助NAND存储的本质，我可以想到三种可能性：

• You have lost the controller. The flash chip itself might still be readable, but reassembling the data from it will be a long and arduous task. This is not doable at home, and requires expensive, professional tools and expertise. If you had the equipment to solder tiny chips (image & source) and read NAND flash, I suppose you could attempt this yourself, but you are more likely to accidentally destroy it.

  您丢失了控制器。 闪存芯片本身可能仍然可读，但是从中重组数据将是一项漫长而艰巨的任务。 这在家里不可行，需要昂贵的专业工具和专业知识。 如果您拥有焊接微小芯片(图像和源代码)并读取NAND闪存的设备，我想您可以自己尝试一下，但是您很可能会不小心破坏它。

• You have lost the flash chip itself. In this case, I do not think there is anything you or anyone else can do. It would be even harder to recover than a lost controller.您已经丢失了闪存芯片本身。 在这种情况下，我认为您或任何其他人都无法做任何事情。 与丢失的控制器相比，恢复甚至更加困难。
• The card is physically damaged, but the controller and flash memory are intact. This is probably the best you can hope for. Again, with how small and fragile the card is, there is not much you can do at home, but the chance of professional recovery is far higher.卡已物理损坏，但控制器和闪存完好无损。 这可能是您所希望的最好的。 同样，由于存储卡的体积小而易碎，您在家中无能为力，但是专业恢复的机会要高得多。

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?

所有这些的问题在于它们需要非常昂贵且仍然不确定的服务才能尝试恢复。 数据值那么多吗？

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.

也许最好的办法是将其视为备份课程。 对于您无法承受的任何数据，请始终至少保留一份额外的副本。 它越重要，您想要的副本就越多，彼此分开存储。

Special Note: This particular ‘recovery story’ had a happy ending, so make sure to browse on over to the discussion thread linked below to see how things turned out.

特别说明：这个特殊的“恢复故事”结局不错，因此请确保浏览下面链接的讨论主题以了解结果。

Have something to add to the explanation? Sound off in the comments. Want to read more answers from other tech-savvy Stack Exchange users? Check out the full discussion thread here.

有什么补充说明吗？ 在评论中听起来不错。 是否想从其他精通Stack Exchange的用户那里获得更多答案？ 在此处查看完整的讨论线程。

翻译自: https://www.howtogeek.com/206119/how-do-you-recover-data-from-a-microsd-card-that-cannot-be-read/

microsd卡无法读取