I think the main advantage for UEFI with Windows 7x64 (only available in 64bit) is that if you deploy Windows 7x64 with UEFI enabled with a GPT formatted HD, then you will be able to do an inplace upgrade to Windows 10 and still take advantage of the tremendous security advantages available when running Windows 10 in UEFI mode. If you want to upgrade Windows 7 -> Windows 10 and your disk is oldstyle MBT formatted, then you either need to do the upgrade to Windows 10 as a bare metal/wipe&load or forgo the security benefits of UEFI in Windows 10. I feel like the security benefits of running Windows 10 in UEFI mode are very real and significant. So deploying Windows 7 in UEFI mode now will ease the upgrade process to Windows 10 in the future when SCCM is able to support deploying Windows 10. I don't think there's a real benefit to running Windows 7 in UEFI, just significant future gains.
UEFI will also let you use gigantic drives as a boot disk. One disadvantage of UEFI I've found is that the scripts and tools provided to change the BIOS settings are "challenging." I had a real hard time manipulating the boot devices in UEFI and eventually gave up. So you know how can be difficult to do the TPM stuff in BIOS for Bitlocker -it is different/harder in UEFI mode. It is easy to force the next reboot to come from the Hard Disk or disable booting from USB devices in BIOS mode-- that is difficult, in my trials-impossible, in UEFI mode. There are year's worth of examples for manipulating BIOS settings while the examples, blogs, and documentation for doing the same in UEFI are still kind of lacking. From: listsadmin@lists.myitforum.com [mailto:listsadmin@lists.myitforum.com] On Behalf Of Marcum, John Sent: Monday, February 22, 2016 12:13 PM To: mdt...@lists.myitforum.com Subject: RE: [MDT-OSD] TMP issues with Dell m5510s Not trying to hijack your thread here but.... What are the advantages/disadvantages to using either UEFI or legacy bios now? Specifically, with Win 7. ________________________________ John Marcum MCITP, MCTS, MCSA Desktop Architect Bradley Arant Boult Cummings LLP ________________________________ [H_Logo] From: listsadmin@lists.myitforum.com<mailto:listsadmin@lists.myitforum.com> [mailto:listsadmin@lists.myitforum.com] On Behalf Of ODONNELL Aaron M Sent: Monday, February 22, 2016 11:41 AM To: 'mdt...@lists.myitforum.com' <mdt...@lists.myitforum.com<mailto:mdt...@lists.myitforum.com>> Subject: RE: [MDT-OSD] TMP issues with Dell m5510s We were unable to get bitlocker to encrypt on our Skylake-based optiplex 7040 and 5040s until we applied the 1.2.1 BIOS update to them. We use legacy mode for Windows 7. Thanks, Aaron O'Donnell From: listsadmin@lists.myitforum.com<mailto:listsadmin@lists.myitforum.com> [mailto:listsadmin@lists.myitforum.com] On Behalf Of Jim Bezdan Sent: Monday, February 22, 2016 5:36 AM To: mdt...@lists.myitforum.com<mailto:mdt...@lists.myitforum.com> Subject: [MDT-OSD] TMP issues with Dell m5510s I am curious if anyone has run across an issue with not being able to enable BitLocker on the new m5510 or other models due to a TPM driver issue? I am not dealing with the issue myself but am being told the issue may be with the new Skylake processor models in general. Has anyone on the list deployed a Dell with a new Intel Skylake (63xx) and BitLocker? Jim ________________________________ Confidentiality Notice: This e-mail is from a law firm and may be protected by the attorney-client or work product privileges. If you have received this message in error, please notify the sender by replying to this e-mail and then delete it from your computer. ________________________________ Notice: This UI Health Care e-mail (including attachments) is covered by the Electronic Communications Privacy Act, 18 U.S.C. 2510-2521, is confidential and may be legally privileged. If you are not the intended recipient, you are hereby notified that any retention, dissemination, distribution, or copying of this communication is strictly prohibited. Please reply to the sender that you have received the message in error, then delete it. Thank you. ________________________________
