Lenovo ThinkPad 600X TP 600X User's Reference - Page 108
Setting to 2-Channel IDE mode, IRQ Holder for PCI Steering
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Using a docking station 9 Click the IDE Device tab. 10 In the IDE device in the docking station list box, select Enable. 11 In the IDE Channel list box, select Third. 12 Click OK to close the "Docking station" window. 13 Restart the system by clicking OK in the warning dialog box. Setting to 2-Channel IDE mode 1 Open the ThinkPad Configuration program. 2 Click the Docking Station ( ) button. The "Docking station" window appears. 3 Click Device Manager.... The "System Properties" window appears. 4 Click Computer; then click Properties. 5 Determine an available IRQ value other than IRQ 11 by checking the current setting under the View Resources tab. If there is no available IRQ value, you can make space for it by removing a device that is not being used. To do this, select the Device Manager tab; click the device you are removing; and then click the Remove button. 6 Click OK to close the "System Properties" window. 7 Return to the "Docking station" window; then click the IRQ Holder for PCI Steering tab. 8 Change the IRQ value in 1st IRQ to the available value you determined in step 5. 86 IBM ThinkPad 600X User's Reference