Cloned drive won’t boot

@JerometheGiraff

Fix the drive letter

HERE

Steve C said:

Disconnect the old drive when booting from the new drive for the first time. Also set any active partitions on the old drive to inactive.

Why must one have to disconnect the old drive when booting, why can't one simply tell Windows the new drive to boot from ?

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SIW2 said:

@JerometheGiraff

Fix the drive letter

HERE

How do you use BCDBoot to fix it ?

There is still the question of how you know it is booting from the old drive with MSCONFIG? And before you go and start setting drive letters and using bcdboot, we really need to see a screenshot of disk management because nobody offering advice here has any idea what your drive layouts look like.

Disk Management - How to Post a Screenshot of

NavyLCDR said:

There is still the question of how you know it is booting from the old drive with MSCONFIG? And before you go and start setting drive letters and using bcdboot, we really need to see a screenshot of disk management because nobody offering advice here has any idea what your drive layouts look like.

Disk Management - How to Post a Screenshot of

Win+R then type msconfig, then go to the Boot tab within System configuration and there you will see what drive Windows is booting from. In my case it should be I instead it shows C.

I have C which is the Windows currently booting into; then I have Drive I which is the clone that should be booted into but isn't. Both are identical in terms of the reserved partitions etc.

In my case it should be I instead it shows C.

You would expect the os letter to be C in both cases after your clone.

You can create a text file on the desktop. Then boot into the other one and see if the text file is there.

WORKED SOLUTION: I had also the same error blinking letter "J" with the tool MiniTool Partition Wizard. What helped was performing an extra step in MiniToolPartition Wizard. Click on new SSD Disk, went to menu "Disk" --> "Rebuild MBR" (on new disk) --> Apply. Afther that new SSD disk was recognized when booting to Windows 10.