| Item | Description |
| CurDrive() | Determines or changes the current disk drive |
| DeleteFile() | Deletes a file with error handling. |
| DirMake() | Creates a directory. |
| DirName() | Returns the current directory. |
| DiskFormat() | Formats a floppy disk. |
| DiskFree() | Returns the free storage space of a disk drive in bytes. |
| DiskReady() | Test if a disk drive is ready. |
| DiskReadyW() | Tests if a drive can be written to. |
| DiskSpace() | Returns the free storage space for a disk drive. |
| DiskTotal() | Returns the totl storage space of a disk drive in bytes. |
| DiskUsed() | Returns the used storage space of a disk drive in bytes. |
| DriveType() | Determines the type of a drive. |
| FloppyType() | Determines the type of a floppy drive. |
| GetVolInfo() | Retrieves the volume label of a disk. |
| HB_DiskSpace() | Returns the free storage space for a disk drive by drive letter. |
| HB_OsDriveSeparator() | Returns the operating specific drive separator character. |
| IsDir() | Checks if a character string contains the name of an existing directory. |
| IsDisk() | Verify if a drive is ready |
| NumDiskL() | Returns the number of logical drives. |
| VolSerial() | Returns the serial number of a disk drive. |
| Volume() | Sets the volume label of a disk. |
