Memory devices raw file system recovery

We can not use the memory devices such as external hard drive, pen drive , memory card and others when it become raw file system with chkdsk. Here are two examples as follows:

RAW SD Card Recovery

1. Urgent! My SD card now shows as RAW on my computer after inserting it and I cannot access to my photos inside. Please help me!!！ 

Hi! There! Don’t Worry! You can find a trustworthy photos recovery tool to help you. Generally, the Windows system always asks one to format the SD card as it is displayed as RAW. But the recovery program can cause data loss that we usually cannot afford. Therefore, considering these worries, the data recovery program is developed to help one out of these similar problems, such as the deletion or format recovery, the RAW or Inaccessible SD memory card data recovery.