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Note that once the migration is done using the following process, the drive letter of the partition or the disk that has it will change to C: from whatever it was before (as compared to before migration, when C: is likely your current Windows partition on your HDD).
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The current installation of Windows is on Disk 0. So, the first disk you have is Disk 0 and the second one is Disk 1, and so on. Disk numbers in the operating system start with 0, much like GPU numbering.
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It works for cloning a working Windows OS from any disk to any disk, regardless of its type and size. This is Spearblade’s Windows migration guide for Windows 10 and 11. We will be using a software called Macrium Reflect 7 to do this. This applies to those wishing to move a Windows installation from an HDD to an SSD – which seems to be the most common reason for doing the migration. In this piece, I am going to talk about how you migrate a working installation of a Windows 10 or Windows 11 operating system to a completely new disk. You cannot just copy and paste the files to a new disk and expect Windows to boot from it, for a variety of reasons, primary among them being the other partitions that Windows needs on a disk to operate, such as one partition for the boot manager itself. There used to be software that could do this migration, but now they are all paid. Migrating a Windows operating system to a new drive without reinstalling can be a hassle.
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