RED: Shows a red signal if the condition of your disk is bad.
YELLOW: If your disk shows a yellow signal to caution of a minor problem.
It normally provides four types of results. Crystal Disk Info can be handy when used in conjunction with CrystalDiskMark. If you want some more comprehensive diagnostics software for your storage it’s really pretty handy tool. The devices are likely solid-state drives, hard drives, sd cards etc. With this software, you can test the health and speed of pretty much any device you have connected to your PC. Key Futures And Benifites Storage Checker