UEFI and Legacy in Windows 8

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My CMOS is presently set up to use Legacy.

1. When I generate a Bootable Rescue Media USB and then go to test it two boot entries appear
in the firmware to select booting from the USB.
One is UEFI, and the other is the legacy form.
-am I correct in assuming that the using the legacy form will leave the system with MBR disks etc;
and that using UEFI would convert the drives to GPT and so on.

2. Is there a utility that can scan the system and find if there is anything that is not UEFI compatible.

3. Is Secure Boot a separate step or does a conversion to UEFI do that at the same time, or does the operating system look after Secure Boot.

4. I have several pieces of activated software (from Adobe and others) going through deactivation/activation steps for each of these is getting monotonous.

5. I am about to change my boot drive to an SSD, the answer to (1) will effect that too.

......John

Fr, 08/30/2013 - 16:57
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John,

1. When testing on my system, the choices just change the way in which Linux expects the PC to boot, it doesn't actully change anything, that happens when the recovery is about to proceed. If you attempt to boot a UEFI system using the Legacy menu item, I would expect the boot to fail as Linux would not find the right booting information. If your PC is a Lenovo many of these have a dual BIOS/UEFI setting that works automatically.

2. UEFI is a new way of booting a PC it is hardware based, as in the chip that is thought of as the BIOS now works more as a database. The biggest difference is if you have a GPT disk format. Actual programs other than disk utilities will not care what method is used to boot your system.

3. Secure Boot is a Microsoft mechanism for brand name PC's, if your brand name PC didn't come with W8 installed it won't be using secure boot, nor will a PC that has been made by you or the local computer shop,

4. This will depend on what the activation mechanism looks for. There is no easy way around those that check disk serial numbers or model numbers, you cna minimise the problem though by selecting to restore the disk signature - note though if you do this, the old disk must not be connected to the system on first boot otherwise Windows will make decisions that might be not what you hoped for.

Fr, 08/30/2013 - 22:17
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truwrikodrorowrelupicugojestutroclulachosaswunuhospikigawakijosaswenomaruclojeueclikaspedrubewidebrisubrohutrurifruuagothunugekedrumucisiuobrobrecrupeslapuswosluprothethibakaslechurathikucli
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Colin, thanks for the reply.

At least some of the Trueimage 2014 documentation suggests that booting the system in UEFI with the Bootable Rescue USB will result in MBR disks being converted to GPT disks. What I am looking for is clear assurance that I have to choose to convert to UEFI rather than the TI software during restore.

I really do not want to do that till I am sure. For example I have heard that some Motherboards block the control of some the fans when in UEFI mode rather than in BIOS mode. Probably just coding version issues with the firmware supplier but I would rather not end up there.

Also if I can go to UEFI without changing to GPT then I would prefer that for now.

Thanks for the heads up about restoring the disk signature, in the past I have used clone where as I recall it was auto magic no need to even think of the GUID.

John
System is ASUS P8Z77-WS with i7-3770K, Windows 8 PRO, new boot drive to be Samsung 840 EVO 750GB.

Sa, 08/31/2013 - 13:06
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