Select next to proceed and then next again to skip the scheduling part. The two disks do not need the same amount of space, but there needs to be enough free space available. Note that you need sufficient space on the new disk so that all data that is on the source disk can be copied.

You should see an exact copy of the disk structure after the selection. Once done, select the copy partitions button and then 'exact partition offset and length' from the selection menu. Since you want to copy the system disk, you need to make sure that the entire disk is free. Use the 'delete partition' action to remove any existing partition from the second disk. This guide uses a free disk backup software, Macrium Reflect Free to be precise, to clone the system partition of the slow SSD to the fast SSD.

While there are many guides on cloning available on the Internet, most appear to advertise paid products. Since I did not want to reinstall Windows or apps, I decided to clone the disk as this would speed things up significantly. Cloning copies all data from one disk to another. I had a good 256 Gigabyte Solid State Drive still lying around from an old PC and decided to replace the slow SSD of the new PC with the fast SSD of the old. It had a good amount of space, 512 Gigabytes, but as soon as write processes would start, it would slow down things on the entire system considerably. I bought a new Windows 11 PC this week for Office work and noticed that the Solid State Drive was slowing things down. The method should work on devices running previous versions of Windows as well. This guide walks you through the steps of cloning the system disk (or any other disk) of a Windows 11 PC for free.

Macrium reflect free clone hdd to ssd