Pleaseee help mee i asked about why my sd card said there was no space but then it would say theres loads then none again and a lot of people said to format it what does this mean thanks (:
Format is erasing all data from the card
Formatting is making the card like it is new again. The data is marked as deleted, so all the space is available again. The data is mostly still there, but it is harder to look at it; for the typical user, consider it gone.
If the SD card is malfunctioning, reformatting it (or formatting it, it means the same) may restore its availability to you for new images. But images already on it will be effectively gone, erased.