I depends on what brand the Laptop is and how the recovery system is setup. On most laptops it will give you two (or three) options at the start of the recovery process.
One will be to reinstal the OS (and usually any aditional bloatware) without changing your partitions.
The other is completely factory out of the box state, picking this option WILL return the partition scheme to how it was when you got the laptop.
Edit: This are the instructions from the user manual for you model laptop (page 66). It will pay to back up your data just in case regardless of how safe this method should be:
- Make sure the computer is turned off.
- Press and hold the 0 (zero) key on your keyboard while powering on the computer.
- If your system offers a choice of Windows 7 32-bit or 64-bit operating system, select one at this time. If not, skip to step 4.
- A warning screen appears stating that when the recovery is executed all data will be deleted and rewritten. Click Yes to continue. (This will be the message you saw.)
- When the Toshiba Recovery Wizard opens and the Selecting a process screen displays, select Recovery of Factory Default Software and then click Next.
- The Recovery of Factory Default Software screen appears. Select Recover without changing the hard drive partitions.
- Click Next. A confirmation message displays reminding you that all data on the C: drive will be lost during the recovery process. (Note that it doesn't mention other partitions.)
- Click Next to begin the recovery.