Select second boot drive

[Dietmar2021]

I added a second hard drive to my dv7-6c20eg and installed Windows 10 on that second hard drive. On the first hard drive Windows 7 has already been installed on that notebook. When I start the notebook now it always runs Windows 7 as always before and it is unpossible to select the Windows 10 system. The BIOS does not show any of the hard drives. What do I have to do?

BIOS InsydeH20 Rev. 3.5 BIOS Vendor F. 1C

Advanced BIOS-Setup is not provided

[VH2000]

Did you remove the WIN7 disk during the WIN10 installaton?

If not  you have a Dual-Boot System.

Open diskmanager and prepare a screenshot showing both disks.

[Dietmar2021]

Yes, we removed the WIN7 disk during the WIN10 installation, because the notebook ignored the USB-Stick with the installation file. The notebook always started with the WIN7 system from the first hard drive. We could not force the notebook to use the USB-Stick for WIN10 installation. For the WIN10 installation we removed the HDD from SATA-Port1 and connected HDD2 to SATA-Port 1, because the notebook started always the WIN7 system. Thanks for answering.

[VH2000]

Strange, your disk 0 (WIN7) does not have a boot partition.

Run command prompt cmd (admin) and type

bcdedit

copy and paste the result here.

[Dietmar2021]

Do you mean disk 1? Disk 0 is marked as start partition. Thanks for answering. I will do the bcdedit in a few minutes.

[VH2000]

What do you see when you open part F in explorer? That should be the WIN10 installation.

C is your WIN 7.

[Dietmar2021]

After the WIN10 installation (HDD 2 on SATA-Port 1) we changed back the HDD 2 to SATA-Port 2 and re-inserted HDD 1 on SATA-Port 1. Please give me another few minutes.

[Dietmar2021]

Here the result from WIN7 (disk 0).

Microsoft Windows [Version 10.0.19043.1415]
(c) Microsoft Corporation. Alle Rechte vorbehalten.

C:\WINDOWS\system32>bcdedit

Windows-Start-Manager
---------------------
Bezeichner {bootmgr}
device partition=C:
description Windows Boot Manager
locale de-DE
inherit {globalsettings}
default {current}
resumeobject {b8c1f765-e681-11eb-8a48-847a1c46197e}
displayorder {current}
toolsdisplayorder {memdiag}
timeout 30

Windows-Startladeprogramm
-------------------------
Bezeichner {current}
device partition=C:
path \WINDOWS\system32\winload.exe
description Windows 10
locale de-DE
inherit {bootloadersettings}
recoverysequence {bad20f4b-e679-11eb-9a99-9d766a26871e}
displaymessageoverride StartupRepair
recoveryenabled Yes
allowedinmemorysettings 0x15000075
osdevice partition=C:
systemroot \WINDOWS
resumeobject {b8c1f765-e681-11eb-8a48-847a1c46197e}
nx OptIn
bootmenupolicy Standard

C:\WINDOWS\system32>bcdedit

[Dietmar2021]

Yes, you are right. Here a screenshot.

[Dietmar2021]

The goal is to have a Dual-Boot System.