Toshiba NB200 - Manual (Page 44)

User’s Manual 3-11
Getting Started
3. If you want to restore the system to factory default, select Recovery to
the out-of-box state. If you want to restore the system to sda3, select
Recovery without changing hard drive partitions. If you want to
restore to a custom sized partition, select Recovery to a custom sized
partition. Then click Next>.
If Recovery to a custom sized partition is selected. The size
specification areas becomes effective. Specify partition size by the arrow
button or key input. The minimum size of OS partition is 10 GB.