Backup

Backup with robocopy.exe in Windows CMD

robocopy "C:\Users\Username" "D:\Username_Backup" /E /R:3 /W:5 /COPY:DAT /DCOPY:T /LOG:D:\backup_log.txt

Backup from one drive to aonther drive (including external or internal)
/E – Copy subfolders (including empty ones)
/MIR – Mirror (⚠ deletes files in destination not in source)
/R:3 – Retry failed copies 3 times
/W:5 – Wait 5 seconds between retries
/LOG:log.txt – Save output to a log fi