There are several functions that will not be available to upgrade computers, compared to a new, factory-installed Windows 8 computer, listed below:
- Dell Store inside of Windows Store not visible to upgrade computers
- Secure Boot: Only works with systems that have the UEFI 2.3.1 (BIOS)
- Brand New Windows 8 PC - need BIOS update and clean install (assumes Win7 load was based on legacy/CSM BIOS)
- Upgrade computers - Not available due to ROM space limitations and lack of BIOS code.
- Fast Boot: UEFI 2.3.1
- Brand New Windows 8 PC - need BIOS update and clean install (assumes Win7 load was based on legacy/CSM BIOS)
- Upgrade computers - OS loader performance improvements will be seen, but not full end to end performance improvement.
- Beautiful/Seamless Boot (one display resolution transition): UEFI 2.3.1 (BIOS)
- Brand New Windows 8 PC - need BIOS update and clean install (assumes Win7 load was based on legacy/CSM BIOS)
- Upgrade computers - Improvements will be seen after BIOS hand-off, but not full end to end improvement.
- Measured Boot: TPM & UEFI 2.3.1 (BIOS)
- Brand New Windows 8 PC - need BIOS update and clean install (assumes Win7 load was based on legacy/CSM BIOS)
- Upgrade computers - Reduced measurement capabilities due to old HW and lack of UEFI 2.3.1 BIOS support
- Auto Provisioned TPM: TPM and UEFI (BIOS)
- Brand New Windows 8 PC - need BIOS update and clean install (assumes Win7 load was based on legacy/CSM BIOS)
- Upgrade computers - Not available with older TPM hardware
- eDrive (if present): eDrive-compliant HDD & UEF - Compliant eDrive needed
- USB 3.0 speed/boot: USB 3.0 controller & UEFI boot support - USB 3.0 HW needed
- Bluetooth battery/power savings (if present): Bluetooth 4.0-LE
- Brand New Windows 8 PC - Available
- Upgrade computers - Not available with pre-BT4.0 HW