macOS "The disk you attached was not readable!"

Hey everyone,
I have a Sandisk 1T SSD, external drive to an iMac (Big Sur 11.7) that just started giving me this message. The Sandisk is less than 1 year old and has been working fine till now. it’s formatted as Exfat. This drive has lots of important stuff on it. Is there any way to bring it back to life? I’ve tried a different USB port, and tried restarting the iMac. - Thanks

mac error

1 Like

Hi @GEORGEHegele ,

Have you opened a Support Case? If not opened, for more information, please contact the SD Technical Support team for best assistance and troubleshooting:

1 Like