Question Help i just lost my data.

[igrk]

setup
c ssd
d e hdd

Hello, today i wanna to defrag my hardisk but disk e doesnt detected while i wanna try to defrag it. Later i try chkdsk /f on disk c. after chkdsk finish my laptop restart and suddenly my d and e becoming raw eith 100% freespace what should i do to return my lost data?
hope you understand my question

 

[rgd1101]

sound like the hdd failed. replace and restore from backup