5. TroubleshootingExpress5800/R110i-1, T110i-S, T110i Maintenance Guide 31Chapter 1 Maintenance5.3 Problem of Windows Installation[?] Unable to create a partition when installing Windows Server 2012 R2 or Windows Server 2012 Is the message as shown below displayed? Failed to create a partition.Remove the partition once, then create it again. If data disk is connected, pay strict attention to thepartition you are going to remove. For details, refer to the website below:Windows Server 2012 R2https://technet.microsoft.com/en-us/library/dn387077.aspxWindows Server 2012https://technet.microsoft.com/en-us/library/jj574225.aspx[?] The keyboard or mouse does not work when Windows Server 2008 R2 installed Did you select Disabled for XHCI Hand-off? See Chapter 2 (1. System BIOS) for details.Advanced → USB Configuration → XHCI Hand-off → DisabledSelect Enabled for XHCI Hand-off after Starter Pack installed.Advanced → USB Configuration → XHCI Hand-off → Enabled[?] Unable to install OS Is the hard disk drive properly installed? Make sure that the hard disk drive is installed securely and that cables are properly connected. If the hard disk drive of installation destination supported? The supported disk format depends on boot mode as shown below.Boot mode Disk formatUEFI GUID Partition Table (GPT)Legacy BIOS Master Boot Record (MBR)For example, in UEFI environment, if the MBR formatted hard disk drive is specified for installationdestination, the message as shown below is displayed.