Hello @
snekkie,
[1] Did you
Clean Install
with the other drive attached?
[2 It sounds like the
BOOTLOADER
is on the other drive, therefore causing the
Boot
problem . . .
Disconnect ALL Other Disks
It is highly recommended that you disconnect [ temporarily unplug ]
ALL other Disks [ HDD's/SSD's/USB's ]
BEFORE
installing Windows. The reasons for this are . . .
- You
CAN'T
accidentally OVERWRITE
a connected Disk. - The
BOOTLOADER
[ boot configuration files ] will get installed on the correct Disk [ because Windows has the tendency to install the bootloader rather randomly on ANY connected Disk ], and therefore STOP
problems with booting once the installation is complete.
Once the installation is complete . . .
- Check that the OS boots correctly.
- Check if the boot order in the
BIOS/UEFI
settings are correct [ if NOT
, adjust accordingly ]. -
Reconnect
the other Disks.
EXPLANATION:
Windows uses a different partition structure for
BIOS/UEFI
. During the installation process, Windows asks which Disk / Partition you want to use for the Windows
C:\
drive, it does
NOT
however, necessarily use the same Disk for the other Partitions, and can therefore incorrectly create the hidden recovery partition on
ANY attached Disk.
Additionally, for
BIOS
, if another Disk is left attached, and at a latter stage you remove that Disk, you will find that the OS will
NOT
boot. If you check the
BIOS
, you will see that the OS has assigned the
AHCI/RAID
setting instead of the
LEGACY
setting and set it up as
RAID
, therefore breaking the boot process.
I hope this helps.