Sometimes we just mistakenly hit the Format button or not properly format a SD Card after getting the message “You need to format the disk in drive XXX before you can use it.”, and then we lost all important files stored on the SD Card, like family photos, confidential documents, precious videos, etc. There is no function to directly reverse or undo the SD Card formatting, but we can still unformat a SD Card by recovering data from formatted SD card with tools.
Now, let’s see how to unformat SD card on Mac, Windows, Android, there is freeware available for this task.
Most people think formatting SD card on computes, phones, camera, etc. would remove all the data from it instantly. But actually, your files won’t disappear immediately, the formatting just restores your memory card to default setting and marked the SD Card as blank.
In other words, the formatted SD Card will write the boot sector and the empty file system to the partition, and will be filled with new data until all previous formatted files are overwritten. Your file has not yet been completely deleted and you still have the chance to unformat SD card. Any operation might overwrite the existing data, which gives rise to permanent data loss. Before unformatting SD card, please stop using it.
Here we will recommend 2 programs to unformat SD Card on Mac, using Cisdem Data Recovery, the most reliable formatted SD Card recovery program and using Photorec, the freeware for restoring data from SD card. You can choose the one meeting your needs the most.
With the aid of Cisdem Data Recovery for Mac, you can carry on SD card unformatting yourself, without asking an expert. As the best unformat memory card software, it can recover files from internal and external hard disk, SD cards, USB flash drive, mobile photos, game console, whatever be the device that connect to your Mac.
It offers quick and deep data recovery modes dedicated to different data loss scenario: deletion, formatting, partition loss, repartition, virus attack, system crash, macOS update or downgrade, etc. Cisdem allows preview recoverable items before recovery too, saving your time and space to recover unwanted files.
PhotoRec is an open source data recovery program developed for recovering lost files from hard disks, memory cards, CD-ROM. It works in Windows, macOS, Linux ecosystem and supports virtually all file systems: FAT, NTFS, exFAT, HFS+…
Though PhotoRec uses read-only principle to read the drive and card which makes it is safe to use, it uses commands to recover files, users will have to use the arrows keys to make options when the commands run in Terminal app. It is not user friendly, but useful to get the files back from a formatted sd card.
Just like the solutions to unformat SD Card on Mac, here we recommend 2 tools to unformat SD Card on Windows too. One is using EaseUS Data Recovery Wizard, the best-in-class Windows data recovery program, and another is using Recuva, the best freeware for Windows data recovery.
EaseUS Data Recovery Wizard is an easy, approachable program that can be utilized by any novices. It can unformat SD card on Windows 11, 10, 8, etc. Besides SD card, it’s capable of unformatting hard drives, SSD, USB drives, removable media. It supports recovering data from BitLocker encrypted drives too. No matter your lost files are photos, videos, documents, emails or other critical files, EaseUS can get them back. In addition, EaseUs offers bootable media version, which can create a bootable USB for data recovery when the system won't start or just crashes.
Unformating SD Card on Windows with freeware is another way to go if you want to get the formatted files back for free. By far, the best free SD Card unformat tool is Recuva from Piriform Software. It helps recover deleted and formatted files from Windows drive, recycle bin, digital camera card, media player and so on. Beside the free version, Recuva offers Pro version too, with extra features like virtual hard drive support, automatic updates and premium support. You can also check the full review on Recuva and decide if it is necessary to upgrade to the Pro version.
On Android phones, you can directly unformat the SD Card without computer, with the help of a Android SD Card recovery application. There are many options available in Google Play, we tested several high-ranking apps and pick the best for you: Photo Recovery developed by Daniel Braga.
The program can undelete photos, SMS, videos, documents and other files from both Android SD Card & internal storage, no rooting will be required and your files are still safe on your Android phone.
Unformat error is one of the common errors, which doesn’t delete files from SD card but disables you to read or write the data. Consequently, to fix the memory card unformatted error, some measures should be taken.
Backup is always the best solution for all kinds of data loss. Thus, we should keep good habit of backup by copying your important files to multi-devices, even to cloud devices.
Peter has always had great enthusiasm for writing, programming and web development. He likes writing about software and technology, his works are featured on some tech blogs or forums like Tom's Hardware, CNET, etc.