>In spanish newsgroups someone remember us an unsolved (and introduced) BUG since VFP7.
>
>My HDD is 40 GB, 500 MBs free.
>

>?VAL(SYS(2020))/(1024*1024*1024)
>
>***************************************
>*   VFP6-SP5  |  VFP7-SP1  |  VFP8    *
>***************************************
>*  37.2678 GB | 0.5415  GB |0.5415 GB *
>*-------------------------------------*
>

>From the Help: "Returns the total size in bytes of the default disk."
>So, we have unexpected values, between versions not documented in help.

It's returning the amount of free space rather than total space. In 6.0 it returns the total. Use DISKSPACE() instead in 7 and 8.