How do I permanently delete files, photos from sd card on Windows PC?

Data erasing software works by overwriting the existing data on a storage device, such as an SD card, with new information. This will make the original data unrecoverable. Simply deleting files or formatting the SD card doesn't completely erase the data; it only marks the space as available for new data, which can often be recovered with specialized tools. Data erasing software ensures that the data is permanently destroyed by writing over it multiple times with random or predetermined patterns of data.

When you use data erasing software to permanently delete photos from SD card the software typically offers several options:

Single Overwrite: The software writes over the entire SD card with random data or zeros in a single pass. This method is faster but may not be sufficient for highly sensitive data.

Multiple Overwrite: This method involves overwriting the data multiple times (e.g., three, seven, or more passes) with random patterns, zeros, and ones. This process takes longer but provides a higher level of security, making data recovery extremely difficult, if not impossible.

Advanced Algorithms: Some software uses advanced algorithms like the Department of Defense (DoD) 5220.22-M standard, which specifies a series of passes with different patterns to ensure data is thoroughly wiped.