How To Clean Sd Card On Mac

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  • Connect the memory card reader to your Mac, and insert the SD card. The memory card will be mounted by the operating system and will appear on the desktop as a new storage device. Confirm that anything on the memory card you might want to keep is backed up before continuing; this process will erase the card permanently.
  • Connect the memory card reader to your Mac, and insert the SD card. The memory card will be mounted by the operating system and will appear on the desktop as a new storage device. Confirm that anything on the memory card you might want to keep is backed up before continuing; this process will erase the card permanently.
  • Dec 21, 2018 Formatting an SD card from a Mac is simple and quick thanks to the Disk Utility application. This is a commonly required task before an SD card or Micro SD card can be used as a storage medium for another electronic device, or even to remove any data stored on the SD card.

There are various reasons why your SD card showing the wrong size. It might due to technical errors such as bad sectors, virus attacks or even corrupted partitions on your SD card or USB drive. Another reason can be due to a faulty SD card.

Many users have reported that the SD card or a USB drive does not have the same storage space as they claimed. Which is not so familiar in popular brands such as SanDisk or Transcend but most common in cheap brands. So, if this is the case it just means you have brought the wrong SD card. Following are the most common reasons why your SD card is not up to full capacity.

Why is my SD card not showing full capacity?

“Why does my 128gb flash drive only showing 32GB?”

Find your SD card: $ diskutil list.or: $ diskutil list external physical. On the right, under IDENTIFIER, you'll see your disk labeled like disk2 or disk3, etc. You can use that label to reference your SD card from now on. I'm going to use disk2 for my example commands, but make sure you use your actual identifier. If you have an SD or micro SD card you want to reformat with your Mac it’s a pretty easy process. Read on to learn how. Before you start, you need to mount the SD or micro SD card on your Mac.

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Typically, this error is prevalent in large capacity flash drives such as SDHC or SDXC cards where the capacity of SD card can even reach over 250 GB. So, if the either card reader or the host device does not support such high capacities, the host device will create a smaller partition.

View Sd Card On Mac

Simply, if a camera or a phone might support a storage drive only up to 32 GB. If you insert such high capacity SD card which is 128 GB on to such a host device, by default, the host device (camera or Phone) will create a partition of 32 GB and the remaining space will be marked as unallocated.

In such cases, your SD card or any kind of flash drive will reduce the storage space.


The other scenarios might be such as Bad Sectors. Bad Sectors are damaged storage sectors that don’t respond to read or write commands. Or a typical virus attack might alter the Master boot record of the flash drive (MBR is like an index of the storage drive where all the details of the drive are maintained) and result in memory card capacity reduced.

Backup or Recover Data from SD Card

To avoid unnecessary data loss problems when the SD card showing the wrong size of its capacity, it is suggested to restore whatever files are available on the card in the very first place.

When it comes to SD card recovery, you can directly copy them and save them to other secure storage devices accessible to Windows PC. But what if the card is inaccessible? Well, under such instances, the perfect choice would be to let the best SD card recovery software for help.

How To Clear Memory Card On Mac

Remo Photo Recovery Software can simply help find and restore files from SD card to other devices with simple clicks on Windows 10/8/7 PC. Simply download, install and follow the simple on-screen instructions to get your data saved from SD card. Remo supports all sorts of data even it recovers videos from a formatted SD card.

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Additionally, Remo has a dedicated variation that assists users to recover photos from SD cards on both Windows and Mac. Now, you can move further to reclaim your SD card capacity.

How do I restore my micro SD card to full capacity?

Once getting all saved data and files from the SD card which shows the wrong size on PC, you can now format SD card to reclaim its full capacity for saving data again. So here you’ll find the two most recommended free methods to format and restore SD card to full capacity.

Use DiskPart cmd command to restore SD card to full capacity

Let’s see how to use DiskPart command to clear and restore capacity on SD card now:

How To Clean Up Sd Card On Mac

  • First of all, get your SD card attached to PC
  • Right-click Start and select Command Prompt (Admin)
  • Sign in as administrator and type: diskpart to bring up DiskPart
  • Type: list disk and hit Enter
  • Type: select disk 1(replace 1 with the disk number of your SD card and hit Enter
  • Type: attribute disk clear read-only and hit Enter
  • Type: exit and hit Enter

Here, one thing to be noticed is that DiskPart CMD command indeed will help you clean the whole SD card, but you do need to recreate a new partition to make the SD card available for saving files again. So, you can use Disk Management tool in Windows 10 or other Windows PC to create a new partition. Be careful, while recreating a new partition in SD card. Even a small ignorance can lead to a corruption of partition map of the SD card that in turn results in severe data loss. If in case, the SD card partition map is corrupted, and not able to create new partition or modify a partition map SD card, check it out here to fix couldn't modify a partition map SD card with utmost ease.

Use Disk Management tool to format and restore SD card to full capacity

In order to fully format and reclaim full capacity of SD card, follow steps:

  • Right-click This PC/My Computer > Manage
  • Select Disk Management under Device Manager, find and right-click on SD card and select Format Volume
  • Rename and reset file system of SD card to NTFS or FAT32 as your need, follow the on-screen guidelines to complete the format process

Find Sd Card On Mac

However, you may selectively follow any one method to get your SD card back to work normally again. Even though you’ll regain full capacity of your SD card and you can use it for storing and saving files and data again then, the above-mentioned methods would cause data loss if you haven’t backed up your files. You may lose your important files due to SD card format!

How To Clean Sd Card

“If you are a victim of such kind of situation and looking to recover formatted SD card data, then it is recommended you to use Remo Photo Recovery Software. This is a compact flash data recovery software that can efficiently get back photos and data from your SD card. ”