Moving Windows Server OS(Hyper-V Core) for clustered Hyper-V hosts from USB thumb drive to SSD

Hi, we have three clustered Hyper-V hosts. They are running on Hyper-V Core OS on USB thumb drives. As the USB drives are getting old, we are planning to move the OS to newly purchased SSD. VMs are located at SAN storage. What will be best way to move or clone Hyper-V core to SSD? Thank you for your help.