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I upgraded a PC with an SSD and had to reinstall twice because windows thought it would be a good Idea just to use the boot partition of the old drive instead of creating a new one on the SSD.

I first noticed that something was weird because I could only delete the system and not the boot partition on the old drive using diskpart. I restarted the machine thinking it would help only for the bios to tell me there was no os on the ssd. I tried booting from the old hdd and sure enough, I landed on the desktop of the ssd install.

To resolve that I had to unplug the other drive, reinstall windows and only then I could boot normally.

60mins of my life wasted as I had just finished installing all the software...

Comments
  • 1
    Theres a prompt where you can select where to install it....

    Can't follow instructionw on screen > definitely windows problem 😂
  • 0
    A thing that worked for me was booting from the new empty drive, wait for the "press any key to boot from disc" prompt and then install Windows. Seems like Windows installs the boot partition on the drive which it is booted from.
  • 0
    I also unplug all but one drive before OS installations.
  • 2
    @D--M Windows always installs its EFI stuff on the first disk with an ESP partition, and for BIOS systems on an existing windows boot partition if you had any.
  • 0
    Welcome to the club. I've learnt this the hard way as well.
  • 0
    @D--M I'm not stupid... Of course I selected the right drive to install on because all the files were installed on the correct drive!

    The installer just decided to reuse the old boot (not the C:\ partition) for the new installation
  • 0
    @Null-Device I know but I have never had any issues so I didn't do that
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