None of them.

Disk C is not a solid state disk, but only one of the system disks. It mainly stores the entire system files. Users should not store other files, including music, video, documents, etc.

To determine whether the C disk is a solid state disk, you need to see what drive letter you give when you partition the hard disk. Start the computer to enter the system, and check whether the C disk is an SSD to know whether the system is in the SSD. Because no matter how you install it, the currently started C disk is a system disk, so you can judge.

Precautions for using SSD

SSD solid state memory is very quiet when working, without any noise. Thanks to the characteristics of no mechanical parts and flash memory chip, such as low heat generation and fast heat dissipation, SSD solid-state memory has no mechanical motor and fan, and its noise value is 0 decibels during operation.

It is difficult to recover the damaged data of SSD. In the traditional disk or tape storage mode, if the hardware is damaged, the current data recovery technology may save some data. However, if the SSD is damaged, it is almost impossible to recover data from the failed (especially DRAM based), broken or breakdown chips through the current data recovery technology.