If your SD card or USB drive is full or if you can't read the content of the drive, but the drive is recognized by windows, most often all you need to do is to format the drive. However, 8-16 GB is more than enough for most use cases, as a G-code file rarely exceeds 100 MB. Be careful when using such programs so you do not accidentally format the wrong storage media, like your hard drive. Choose Master Boot Record for the Scheme. Choose exFAT or MS-DOS (FAT) for the format. Choose how you would like to format the drive. Select the upper level of the drive you would like to format and click the Erase button. To format such a drive you need a third-party application, like Rufus, FAT32 format, or EaseUS Partition Master. In the top menu bar, go to View, and choose Show All Devices. There are similar limitations under various versions of Apple's OSx, where a third-party application must be used to format it correctly.

It will only provide the option for exFAT, which is currently not supported by our printers. There is no upper size limit on compatible storage media, but the built-in Windows formatting tool does not support formatting storage media from a size of 32 GB or more to FAT32. In case it is locked, you will not be able to save files on the card, and the printer will not be able to open the SD card. Before using your SD card, make sure that the latch is not set to the Locked position. Therefore, we have put together a small guide on how to maintain, format, and purchase memory for your Original Prusa printer.

Though common and convenient, flash memory is not the most reliable in itself and your storage can be corrupted or fill up without any obvious signs. As there are ways of remotely transferring files and starting prints, an SD card or USB flash drive is the most common and reliable way to get your files to your machine.

How to format sd card on apple computer