If you don't want to spend a full 100€ on a large SSD, you use a small SSD (60-120GB) for the operating system only. If you have at least 50% free on the existing HD, you could do this as follows:- 1) Shrink the existing partition (C:) to the smallest feasible size. 2) Create a new partition in the free space (D:) 3) Move the user folders to the D: drive. There are instructions on the internet for moving "My DOcuments", "Desktop" etc to a new location. 4) Clone C: (and small boot partition if any) onto the new SSD. Make sure the SSD partition is marked as active. 5) Boot via the SSD and remove the old C: form the HD. 6) Expand the D: partition to the full size of the HD. This should give you decent boot times while storing documents on the slower, cheaper HD. I have a Windows 10 PC configured this way on a (now aging) 60Gb SSD. I previously used the same SSD in a Pentium 4 based Dell running Windows XP. One consideration is that larger SSDs are typically faster.

My previous code after some Herbalife:-

FUNC rr(c)
r=0;p=0;b=len(c)
WHILE b>0
v=at(c[b],'IVXLCDM')-1
f=10^int(v/2)*(v%2*4+1)
r+=if(fp,p:=f,)
b--
END
RETURN r

Compiles with xHarbour.

FUNCTION Roman2Dec(cRoman)

LOCAL nPointer := len(cRoman)  
LOCAL nPos := 0,nFaceVal := 0,nLastVal := 0, nReturn := 0

WHILE nPointer > 0
    nPos     := at(substr(cRoman, nPointer, 1),'IVXLCDM') -1 
    nFaceVal := (10 ^ int((nPos)/2)) \* (1+((nPos) % 2 \* 4))
    nReturn  += iif(nFaceVal < nLastVal, -nFaceVal, nFaceVal)
    IF nFaceVal > nLastVal
        nLastVal := nFaceVal
    ENDIF
    nPointer--    
ENDDO

RETURN nReturn