| Subject | English | Portuguese |
| comp., MS | unallocated disk space | espaço em disco não alocado (Any unpartitioned and unformatted space on a hard disk) |
| commun. | unallocated number | número não utilizado |
| commun. | unallocated number | número vago |
| el. | unallocated number | sinal de número não utilizado |
| comp., MS, Braz. | unallocated space | espaço não alocado (Available disk space that is not allocated to any volume. The type of volume that you can create on unallocated space depends on the disk type. On basic disks, you can use unallocated space to create primary or extended partitions. On dynamic disks, you can use unallocated space to create dynamic volumes) |
| comp., MS | unallocated space | espaço não atribuído (Available disk space that is not allocated to any volume. The type of volume that you can create on unallocated space depends on the disk type. On basic disks, you can use unallocated space to create primary or extended partitions. On dynamic disks, you can use unallocated space to create dynamic volumes) |