During the manual installation of XP on a Toshiba notebook with its SATA controller set to AHCI mode, an error message will come up ( "Setup did not find any hard disk drives installed in your computer") and the installation stops.

There is no need to manually add this driver:
a) On Toshiba notebooks coming with SATA HDD controllers that are using the so-called "Compatible" mode instead of the "AHCI" mode.
b) When recovering the OS from a Toshiba recovery media.

The (Intel Matrix) Storage Manager driver files from the "F6flpy" directory of Toshiba's Intel Matrix Management package must be added during the manual XP installation when asked to "Press F6 if you need to install a third party SCSI or RAID driver".

In order to add the AHCI driver,
1) Download the latest XP (Intel Matrix) Storage Manager Package from the Toshiba driver download web page.
2) Unpack the Zip-file and copy the files from the appropriate Chipset sub-folder of the F6flpy directory to a floppy disk as Windows XP only supports adding mass storage drivers from floppy disk.
3) Connect a USB FDD to the notebook and insert this floppy disk.
4) Start the XP installation and press F6 when queried.
5) When prompted "S = Specify Additional Device". Press 'S' and specify select the Matrix driver on the mass storage driver selection screen.
6) Press 'Enter' to continue with the installation.

To make sure that you are installing the latest driver for your notebook model, please use the driver from the Toshiba driver download web pages.

Note: If you are not sure which chipset is built into your Toshiba notebook, please check the Toshiba product specifications or from the expanded "System Device" category of Windows XP's device manager.