Retaining Bootable 2nd HD in system

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I know that generally speaking it is advisable, having recovered the system partition from an original HD (Disk 0) to a second HD (Disk 1), to disconnect Disk 0 prior to booting from Disk 1. I have also had a habit since XP days, of clearing the MountedDevices registry key prior to creating a backup. Both of these steps have been with the aim of avoiding confusion when booting from the second HD with both drives still in the system .

However I recently backed up and recovered the Windows 7 System Reserved partition and C: Drive from Disk 0 to Disk 1 - but forgot to disconnect Disk 0 prior to booting from Disk 1. To my surprise this seemed to work OK, even though in the past I believe that in the absence of any MountedDevices registry entries, XP would always assign the letter C: to Disk 0 irrespective of BIOS boot order.

Having examined the event log for the recovery, I see there are the following entries:

Mapped from Disk BIOS num - 128 NtSignature - 11664822 to Disk BIOS num - 128 NtSignature - 11664822
Mapped from Disk BIOS num - 129 NtSignature - -708092490 to Disk BIOS num - 129 NtSignature - -708092490
Bootability restore operation has started.
Bootability restore operation has finished.

Could anyone tell me, does this mean that during the recovery operation Acronis True Image 2013 added the correct MountedDevice registry entries so that Disk 1 could successfully boot even with Disk 0 still connected?

Many thanks!
DD

ven 21/02/2014 - 22:42
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Greetings,
No idea. Since the configuration is not recommended, and the results often undesirable, I've never bothered to see what happens if I leave a second disk with an OS in any of my systems. If you want dual boot, its recommended that you use a boot manager. The one included with 7 and later OS is robust as ever. Stable and reliable. I'd focus my efforts there. Additionally, Windows 8 includes HyperV. Another great option for virtual machine.

Cheers

sam 22/02/2014 - 15:48
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Hi Shadowsports - that's a fair enough point of view (even if mine might differ)! Personally I like to have a way of getting up and running immediately in the event of HD failure of disk 0 without having to rely on a recovery CD, by simply booting from Disk 1.

By any chance does anyone else know precisely what process these recovery log entries indicate?

Mapped from Disk BIOS num - 128 NtSignature - 11664822 to Disk BIOS num - 128 NtSignature - 11664822
Mapped from Disk BIOS num - 129 NtSignature - -708092490 to Disk BIOS num - 129 NtSignature - -708092490
Bootability restore operation has started.
Bootability restore operation has finished.

Regards,
DD

sam 22/02/2014 - 20:57