I have a new Windows 11 system with a 2 TB NVMe SSD, but I'd like to install Linux on that faster drive while keeping Windows available as a backup through dual boot. I also have a slower 1 TB NVMe SSD from an older computer and want to clone the Windows installation onto it, then wipe the 2 TB drive for Linux. The drives will remain in the same system, which uses an ASUS B650 motherboard and Ryzen 7 9800X3D. Could cloning Windows from the larger SSD to the smaller one cause problems with booting, Secure Boot, partitioning, or anything else? I haven't started yet and want to test the clone before erasing the original drive.
3 Answers
The main complication is that you’re cloning from a larger drive to a smaller one. The used space across all partitions—including the EFI and recovery partitions—must fit within 1 TB. Shrink the Windows partition first if necessary, or use cloning software that can automatically resize partitions for the destination drive. Don’t erase the 2 TB SSD until you’ve successfully booted from the 1 TB drive and confirmed that Windows works normally.
Secure Boot usually isn’t the main issue here. A proper UEFI clone should preserve the Windows boot partitions, but firmware boot order may need to be changed so the system starts from the 1 TB SSD. If BitLocker or device encryption is enabled, save the recovery key and consider suspending protection during the cloning process. Keep an independent backup of important files, and verify both Windows and Linux boot successfully before deleting anything from the original drive.
Clone the entire disk rather than copying only the Windows partition. The EFI system partition, Microsoft reserved partition, recovery partition, and boot configuration may all be needed. Clonezilla and similar tools can resize the layout for a smaller destination, though you may need to shrink the Windows partition manually first if the automatic adjustment cannot make everything fit.
Thanks—that’s helpful. I’ll make sure the full partition layout fits and use the resizing options if needed.
That makes sense. There isn’t much data on the drive yet, so everything should fit. I’ll test the 1 TB drive thoroughly before wiping the original.