
These steps should help get you back up and running. If the above troubleshooting doesn't resolve the issues, there could be a problem with your SD card or a problem with the camera recognizing SD cards. If available, try inserting a secondary SD card in the camera to see if it will recognize a different card and narrow down where the issue is coming from.
If an "SD ERR" message appears please use the instructions above to clear this message, otherwise if the display reads normally you’re all set.
Upon completing the card format in the computer, safely eject the card, put it back into the GoPro and power it ON. Follow the formatting instructions for your operating system: Windows | Mac. Please insert the card into your computer using a microSD Card reader/adapter. The strong exterior of the SanDisk Extreme UHS-I microSD Card. It is the most popular pick among the SD cards around. With up to 160 MB/s read speed and 90 MB/s write speed, this SD card lets you record and transfer high-resolution images and 4K UHD videos. If the camera still displays "NO SD," we’ll have to format the card using the computer before being able to use it in the camera. The SanDisk Extreme microSD card is one is our top recommended microSD cards for HERO 8. First, make sure that the SD card is fully inserted in the camera. Power on the camera and verify that "NO SD" is still displayed. For further validation, please try a secondary card from our Recommended List for the best performance. If you still see this error after recording in a high-resolution or frame rate mode, it's likely that your SD card is unable to keep up with the camera's output. You can also format the SD card using Quik or your Mac / Windows computer. This wipes the SD card clean of all data including any potential issues that may have been causing the error. Exit your settings menu and you'll no longer see error codes displayed. Please enter the Settings menu and select the trash can icon to Delete All/Format your SD card. Make sure that the SD card is fully inserted in the camera. Please note: Ensure that you back up any pictures and/or videos before you proceed any further to prevent loss of footage. Here are some steps you can take to resolve the issue: If you’re experiencing either an ‘SD ERR’ or ‘NO SD’ message on your camera’s LCD screen, this means that your camera can't properly communicate with the SD card.