您的 SD 卡有问题？SD 卡可能(SD cards can fail)因多种原因出现故障。幸运的是，您可以采取一些措施来解决这个问题。以下是您可以采取的一些措施来让您的 SD 卡恢复工作状态。
你一直把责任归咎于你的 SD 卡。但如果问题出在读卡器上怎么办？此外，请务必查看我们的 YouTube频道(Channel)，我们在该频道发布了有关如何解决损坏的 SD 卡的简短视频：
检查读卡器
如果卡仅在一个特定设备上出现故障，则很可能是读卡器问题。有时需要维修或更换计算机中的内置读卡器。检查它，看看是否有任何物理损坏。使用备用 SD 卡测试读卡器是否无法检测到任何插入的卡。
如果您使用的是外部读卡器，则可以尝试用兼容的替代品更换电缆。有故障(Faulty)的电缆会导致读卡器停止正常工作。
使用不同的 USB 端口
有些计算机有多个USB端口。检查计算机的 I/O。如果前后面板都有USB端口，请尝试进行切换。(USB)
如果读卡器在一个端口上工作但在另一个端口上工作，则您可能遇到了USB端口问题，而不是您最初认为的 SD 卡问题。
您可能还想考虑将USB电缆换成另一根电缆。
重新启动计算机
一个老东西，但一个好东西，重新启动计算机是一个经过时间考验的解决方案，它惊人地解决了用户遇到的大多数问题。断开读卡器，重启后重新连接。看看问题是否仍然存在。
更新驱动程序
大多数USB读卡器在您第一次插入时会自动安装驱动程序。但是，制造商通常会更新其驱动程序以修复错误或改进其产品。这些更新可公开下载，但通常会被忽视。
如果有可用的更新，请与您的读卡器制造商联系，如果有，请安装。看看这样能不能解决问题。
检查我的电脑
如果USB驱动器无法识别并且(USB)我的电脑(My Computer)中没有显示驱动器号，则可能是您的计算机内存不足。尝试关闭所有程序并让它闲置几分钟。
或者，您可以使用任务管理器(Task Manager)( Windows ) 或活动监视器(Activity Monitor)( Mac ) 强制停止内存密集型应用程序。
如果插入USB读卡器时没有显示新的驱动器号，您可能必须使用 磁盘管理 手动为驱动器指定一个(give the drive a letter using Disk Management)号。
关闭写保护
如果您的 SD 卡被识别，但您很难修改文件，您可能只是打开了读写保护。存储卡的侧面有一个物理开关。您可能在处理过程中不小心打开了它。
禁用读写保护，看看是否能解决 SD 卡问题。
正确设备的格式
格式化 SD 卡或微型 SD 卡将删除其所有内容并在一定程度上将其恢复到原始状态。但是，有些格式设置会影响哪些设备可以读取 SD 卡。例如，您可能已将 SD 卡格式化为在计算机上工作，而不是在智能手机上工作。
要在您喜欢的设备上读取卡片，您将不得不再次重新格式化它。但是，请记住，它会删除您 SD 卡上当前的所有文件。仅当您对丢失所有数据感到满意时，才应进行格式化。否则，您将被迫使用数据恢复软件。
希望上述提示之一可以让您访问 SD 卡上的数据。如果没有任何效果，则 SD 卡本身可能存在问题。在不同的计算机和设备上尝试它，如果它们都无法读取它，您可能必须使用第三方数据恢复软件来提取数据。
SD Card Can’t Be Read? Here’s How to Fix It
Having trouble with your SD card? SD cards can fail for many reasons. Fortunately, there are steps you can take to remedy the issue. Here are some of the things you can do to get your SD card back in working condition.
You’ve been putting the blame on your SD card. But what if the problem lies in the card reader? Also, be sure to check out our YouTube Channel where we posted a short video on how to troubleshoot a corrupted SD card:
Check
the Card Reader
If the card only
fails on one specific device, it could very well be a card reader problem.
Sometimes built-in card readers in computers need to be repaired or replaced.
Inspect it and see if there’s any physical damage. Use a spare SD card to test
if the card reader can’t detect any card that’s plugged in.
If you’re using
an external card reader, you can try replacing the cables with a compatible
substitute. Faulty cables can cause card readers to stop working properly.
Use
a Different USB Port
Some computers have more than one USB port. Check your computer’s I/O. If there are USB ports on both front and back panels, try making the switch.
If the card reader works on one port but not the other, you could be having a USB port issue and not an SD card problem as you originally thought.
You may also want
to look into swapping the USB cable with another one.
Restart
the Computer
An oldie but a
goodie, rebooting the computer is a time-tested solution that surprisingly
resolves most issues that users encounter. Disconnect the card reader then
reconnect after restarting. See if the problem persists.
Update
the Drivers
Most USB card readers automatically install drivers when you plug them in for the first time. However, manufacturers would often update their drivers to fix bugs or make improvements to their products. These updates are made publically available for download but would often go unnoticed.
Check with your
card reader’s manufacturer if there are updates available and install if there
are any. See if that will get rid of the problem.
Check
My Computer
If the USB drive is not recognized and no drive letter is shown in My Computer, it’s possible that your computer is low on memory. Try closing all programs and have it run idle for a few minutes.
Alternatively, you can use Task Manager (Windows) or Activity Monitor (Mac) to force stop memory-intensive applications.
If no new drive letter is showing up when plugging in a USB card reader, you may have to manually give the drive a letter using Disk Management.
Turn
Off Write Protection
If your SD card is recognized but you’re having a hard time modifying files, you simply may have read-write protection turned on. Memory cards have a physical toggle located on their side. You may have accidentally turned it on during handling.
Disable read-write protection and see if that fixes the SD card problem.
Format
for the Right Device
Formatting an SD card or micro SD card will remove all its contents and somewhat restore it to its original state. However, there are format settings that can affect what devices can read the SD card. It’s possible you may have formatted the SD card to work on computers and not on smartphones, for example.
To make a card readable on your preferred device, you’re going to have to reformat it again. However, do keep in mind that it would erase all the files that are currently on your SD card. Formatting should only be done if you’re comfortable with losing all your data. Otherwise, you’d be forced to use data recovery software.
Hopefully, one of the tips above gets you access to the data on your SD card. If nothing has worked, there could be a problem with the SD card itself. Try it on different computers and devices and if none of them can read it, you may have to use third-party data recovery software to pull data off.
