Dealing with Legacy Boot Drives and the 2TB Limit
Legacy boot devices are supported by the FuzeDrive software. However, Microsoft and PC BIOSes have a limitation of 2TB size when using legacy mode and/or MBR based partitions.
Note, Microsoft have provided a tool that may allow you to convert from legacy to EFI boot drives at https://docs.microsoft.com/en-us/windows/deployment/mbr-to-gpt
. As with all boot drive transition utilities, please ensure you backup your important data or entire OS first before proceeding with any modifications to your disk structure.
Problem if staying with legacy boot mode: When expanding an SSD or HDD boot drive in legacy mode, if the total size of the FuzeDrive exceeds 2TB, even though the FuzeDrive will present a disk that is > 2TB, you will be unable to expand the C: boot volume beyond the 2TB limit. As pointed out above, this is not a limitation with FuzeDrive but with Microsoft legacy boot disks. The same would occur for driver based RAID disks also.
Example 1: If we have a 2TB legacy boot HDD that was being completely used, and you wish to add a 512GB SSD to it to create a FuzeDrive, the boot volume cannot be expanded to take advantage of the additional capacity added as the boot volume is already at it's limit regardless of the FuzeDrive license limit. The additional capacity can however be used as a D: or other letter drive that will also benefit from the FuzeDrive tiering.
While there are lengthy unsupported procedures online to convert the boot drive from legacy to UEFI boot mode, it is usually safer to reinstall the OS as an UEFI boot volume, the convert to a FuzeDrive. As UEFI allows volumes > 2TB, you will then be able to take full advantage of the additional capacity added to the boot drive.
Example 2: If we have a 1TB legacy boot HDD and adding a 256GB SSD, we can transform the HDD AND expand it to 1.25TB as it is still under the 2TB limit.
What happens when I expand a legacy boot drive capacity by more than 2TB?
For systems running in legacy boot mode, all disk sizes are limited by the OS to 2TB in size. This can cause some confusion when expanding boot drives to greater than 2TB. To work with boot or data drives greater than 2TB your MUST upgrade your ...
Cleaning Drives Using Diskpart
When trying to create a data FuzeDrive preserving data and the error message "For transform data, only one drive may have a partition" appears, this means you need to clean one of your drives. IMPORTANT: The following steps will completely erase all ...
Understanding the 128GB SSD Limit on FuzeDrive for AMD Ryzen Version
The AMD version of the FuzeDrive software is targeted exclusively at the AMD RyZen family of motherboards and systems. The supported SSD capacity for the basic version is limited to 128GB SSD fast tier capacity. Other OEM versions may have different ...
Failure to Boot or "Inaccessible Boot Device" after Creating a Bootable FuzeDrive - EFI Recovery
This article only applies to FuzeDrives that have never booted successfully. See this article for a FuzeDrive that booted at least once successfully, but no longer does. For an ACPI BIOS ERROR blue screen (we've so far only seen this with ASUS ...
Secure Boot With FuzeDrive
See this KB article: Disabling Secure Boot How to re-enable Secure Boot with a bootable Enmotus FuzeDrive: NOTE: This knowledge base article only applies to bootable tiers. Secure Boot need not be disabled to create nonbootable tiers. This method ...