The following are some problems we encountered while we worked on Raspberry Pi.
We encountered SD card corruptions while working with Raspberry Pi. In some cases, we had to discard the SD card but in other cases, we were able to recover the SD card using Advanced Partition Scanner Wizard and re-image the SD card.
Sometimes the failure occurs because there is a power failure while the card is still being written to. Such failures are unavoidable over the life of your projects. Here are a few ways to avoid SD card corruption:
Power down your Pi properly after use
Charge your battery packs and make sure Pi has a constant power supply at all times
Be sure to buy good quality SD cards and as with everything else digital, have backups.