Mac用户通常具有创意倾向，其中包括摄影师和摄像师。这意味着您的相机和其他设备周围或内部可能有一大堆SD 卡。(SD cards)有时，SD 卡可能会出错，需要进行格式化。
谢天谢地，这是你可以用你的Mac做的事情，但它可能不是很明显。让我们了解如何在Mac(Mac)上格式化 SD 卡的过程，以及安全执行此任务所需了解的一切。
警告！格式化会删除所有数据(Data)！
是的，你可能已经知道了。但必须说。如果您不知道，格式化会清除 SD 卡上的所有数据。因此，如果您有能力并且卡上当前的数据很重要，请将其备份到某个地方。
此外，请仔细检查您正在格式化 SD 卡，而不是其他驱动器，例如USB拇指、记忆棒或外部硬盘驱动器。确保(Make)您选择了正确的驱动器号！
何时格式化 SD 卡
格式化包括 SD 卡在内的磁盘会重写磁盘的结构，以便设备知道如何存储、检索和删除数据。这有点像在装满书籍之前建造图书馆的书架。
这是一项相当大的工作，也意味着磁盘上的所有数据都丢失了。因此，格式化 SD 卡的第一种情况是您不关心卡上的数据。要么是因为你已经备份了它，要么它已损坏，要么你不再需要它。
SD 卡上的数据(Data)损坏意味着卡或设备存在问题。它也可能由于故障或事故而发生。例如写入卡时断电。
如果 SD 卡在物理上仍然没有问题，您通常可以将其格式化并继续使用。如果卡有故障，格式化通常会失败。使其成为驱动器健康状况的快速指标。
当您需要将 SD 卡与需要与卡当前使用的格式不同的设备一起使用时，您还需要格式化 SD 卡。有多种格式类型，每种都有其优点和缺点。主要考虑因素是您要使用 SD 卡的设备是否可以读取该特定格式。所以接下来我们将看看哪种格式最适合 SD 卡。
您应该使用哪种格式？
SD 卡可以使用多种格式，但大多数情况下，正确的选择是FAT32或exFAT。大多数设备和计算机操作系统都可以读取这些格式中的任何一种。exFAT 的优势在于支持大于 4GB 的文件大小。查看 SD 卡所用设备的手册，以确保选择最佳格式。
不要选择任何 macOS 日志格式。这些仅适用于内部Mac驱动器和仅用于 Mac 的外部驱动器，(Mac)其中数据完整性也很重要。
在Mac上格式化(Format)SD 卡(SD Card)需要什么
如果您有最近的MacBook，您可能知道您的计算机上除了两个或四个USB-C Thunderbolt 3端口之外没有任何端口。较旧的 MacBook 具有内置 SD 卡插槽，因此在此类机器上使用 SD 卡很简单。
如果您的Mac没有 SD 卡插槽，则您需要购买USB SD 读卡器(USB SD card reader)或购买一个 USB-C 或 Thunderbolt 3 扩展坞，其中一个作为其端口之一。读卡器(Card)本身相当便宜，但底座可能相当昂贵。因此，无论如何，如果您在市场上寻找码头，请只走更昂贵的路线。如果您已经有一个带有USB A端口的扩展坞，那么标准的USB SD读卡器就可以正常工作。
确保获得可以接受全尺寸 SD 卡和更常见的 micro-SD 类型的读卡器。
如何使用磁盘工具(Disk Utility)在Mac上格式化(Mac)SD 卡(SD Card)
在Mac(Mac)上格式化 SD 卡的原生方法是使用内置的磁盘工具(Disk Utility)。这样做既快速又容易，尤其是在您知道要选择哪些设置的情况下：
- 插入 SD 读卡器并将 SD 卡插入相应的插槽。
- 打开Spotlight Search (command + space) 并搜索Disk Utility。打开应用程序。
- 在左侧窗格中的外部下，查找您的 SD 卡。选择它，确保它是正确的驱动器。
- 现在右键单击驱动器并选择擦除...(Erase…)
- 如果您愿意，请给驱动器一个卷名。
- 选择一种格式，我们在大多数情况下建议使用 exFAT。
- 选择安全选项(Security options)并选择擦除安全级别。较高的设置使恢复数据变得更加困难，但会使格式花费更长的时间。
- 选择擦除(Erase)并等待该过程完成。
您现在可以再次使用 SD 卡，假设它没有以某种方式损坏。如果您不确定，请查看这篇关于SD 卡损坏(SD card corruption)的文章。
使用官方 SD Alliance 应用程序(Official SD Alliance Application)格式化SD 卡(SD Card)
SD 卡是根据SD 卡联盟(SD Card Alliance)制定的标准制造的。这些标准还包括应如何格式化卡片以获得最佳性能和可靠性。
因此，无论您使用的是Windows还是Mac机器，Alliance都建议您使用他们的格式化应用程序。
- 下载(Download)并安装应用程序
- 打开应用程序
- 确保(Make)选择了正确的驱动器号
- 选择覆盖格式(overwrite format)，除非你只想从表面上擦除磁盘
- 如果您愿意，请选择卷标
- 选择格式(format)然后继续
您可能必须提供管理员密码并批准一些权限，然后格式才能开始。完成后，您的 SD 卡应该可以使用了。
擦拭干净
格式化 SD 卡后，您现在可以将其放回设备中。无论是您的手机、Nintendo Switch、DSLR、安全摄像头还是任何其他接受它的设备。请记住，其中许多设备都有自己的内置格式化实用程序。
大多数情况下，最好使用那些内置实用程序格式化卡。但是，当出现问题时，使用Mac(Mac)进行初始格式化可能是使卡成形的好方法，这样设备就可以首先读取和格式化它。
如果您的卡在格式化后仍然无法使用，请不要太失望。SD 卡是令人惊叹的存储设备，但它们会相对较快地磨损并且可能有点脆弱。永远不要将它们用于永久存储是个好主意。确保(Make)将不可替代的文件（例如照片）备份到其他位置。像Google Drive(Google Drive)或 i Cloud这样的(Cloud)云(Cloud)存储服务可能是最安全、最方便的选择。
How to Format an SD Card on Mac
Mac users are often of thе creative bent, which inclυdes photographers and videоgraphers. That means you probably have a whоle bunсh of SD cards lying around or inside your cameras and other devices. From time to time, SD cards can go wrong and will need to be formatted.
Thankfully this is something you can do with your Mac, but it might not be perfectly obvious how. Let’s walk through the process of how to format an SD card on a Mac, and everything you need to know to perform this task safely.
Warning! Formatting Erases All Data!
Yes, you probably already know this. But it needs to be said. In case you didn’t know, formatting will erase all of the data on your SD card. So if you’re able and the data currently on the card matters, back it up somewhere.
Also, double-check that you are formatting the SD card and not another drive such as a USB thumb, stick, or external hard drive. Make sure you’ve selected the right drive letter!
When to Format an SD Card
Formatting a disk, which includes SD cards, rewrites the structure of the disk so that devices know how to store, retrieve and delete data. It’s a bit like building the library shelves before filling them with books.
That’s quite a big job and also means all data on the disk is lost. So the first situation in which you’ll format an SD card is one where you don’t care about the data that’s on the card. Either because you’ve already backed it up, it’s become corrupted, or you don’t want it anymore.
Data corruption on an SD card means that either the card or device has an issue. It can also happen as a result of a glitch or accident. Such as a loss of power while writing to the card.
If the SD card is still physically fine, you can usually format it and keep using it. If the card is faulty, a format will usually fail. Making it a quick indicator of drive health.
You’ll also want to format an SD card when you need to use it with a device that needs a different format from the one the card currently uses. There are various format types, each with its pros and cons. The main consideration is whether the device you’re going to use the SD card with can read that particular format or not. So next we’ll look at which format is best for an SD card.
Which Format Should You Use?
There are various formats that you can use for SD cards, but most of the time the correct choice is either FAT32 or exFAT. Most devices and computer operating systems can read either of these formats. exFAT has the advantage of supporting file sizes larger than 4GB. Check the manual for the device the SD card is destined for to ensure you pick the optimal format.
Don’t choose any of the macOS journaled formats. These are only appropriate for internal Mac drives and external drives that will only be used with a Mac, where data integrity is also important.
What You Need to Format an SD Card on Mac
If you have a recent MacBook, you probably know that there are no ports on your computer besides two or four USB-C Thunderbolt 3 ports. Older MacBooks have built-in SD card slots, so using an SD card on such machines is straightforward.
If your Mac doesn’t have an SD card slot, you’ll need to buy a USB SD card reader or get a USB-C or Thunderbolt 3 dock that features one as one of its ports. Card readers by themselves are pretty inexpensive, but docks can be quite pricey. So only go the more expensive route if you were in the market for a dock anyway. If you already have a dock with USB A ports then a standard USB SD card reader will work just fine.
Be sure to get a card reader that can accept both full-size SD cards and the more common micro-SD type.
How to Format an SD Card on Mac Using the Disk Utility
The native method of formatting an SD card on a Mac is to use the built-in Disk Utility. This is quick and easy to do, especially if you know what settings to choose:
- Plug in your SD card reader and insert the SD card into the appropriate slot.
- Open Spotlight Search (command + space) and search for Disk Utility. Open the app.
- In the left-hand pane, under external, look for your SD card. Select it, making sure it’s the right drive.
- Now right-click on the drive and select Erase…
- Give the drive a volume name if you wish.
- Choose a format, we suggest exFAT in most cases.
- Choose Security options and pick a level of erasure security. Higher settings make it harder to recover data but will make the format take longer.
- Select Erase and wait for the process to finish.
You can now use the SD card again, assuming that it’s not damaged in some way. If you’re unsure, check out this article on SD card corruption.
Formatting an SD Card With the Official SD Alliance Application
SD cards are made according to standards set by the SD Card Alliance. Those standards also include how the cards should be formatted for maximum performance and reliability.
So, whether you’re on a Windows or Mac machine, the Alliance recommends that you use their formatting application.
- Download and install the application
- Open the application
- Make sure the correct drive letter is selected
- Choose overwrite format, unless you only want to wipe the disk superficially
- Choose a volume label if you wish
- Select format and then continue
You may have to provide your administrator password and approve a few permissions before the format can commence. After it’s done, your SD card should be ready to use.
Wiped Clean
With your SD card formatted, you can now put it back into the device. Whether that’s your phone, Nintendo Switch, DSLR, security camera, or any other device that accepts it. Keep in mind that many of these devices have their own built-in formatting utility.
Most of the time it’s better to format the card using those built-in utilities. However, when things go wrong, an initial format using your Mac can be a good way to get the card into shape, so that the device can read and format it in the first place.
If your card still doesn’t work after formatting it, don’t be too disappointed. SD cards are amazing storage devices, but they wear out relatively quickly and can be a bit fragile. It’s a good idea to never use them for permanent storage. Make sure to back up irreplaceable files, such as photos, to another location. Cloud storage services like Google Drive or iCloud are probably the safest and most convenient options.
