“Failed to add the device: Unable to allocate requested partition scheme.”

Hello, I’m hoping to get some help with my installation of Bazzite on the ROG Ally X.

I’d like my machine to dual-boot both Windows and Linux. I have an 8tb SSD that is correctly partitioned to 4tb for Windows, and 4tb of free space. I’ve ensured bitlocker and fast startup in windows are properly disabled. I am able to get all the way into the Bazzite installer, but I’m having some trouble with the Installation Destination. Every time I try to set up a separate EFI partition via manual partitioning, I get the following error.

Failed to add the device:
Unable to allocate requested partition scheme.
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Traceback (most recent call last):
File “/usr/lib/python3.13/site-packages/blivetgui/blivet_utils.py”, line 1357, in add device blivet.partitioning.do_partitioning(self.storage)
File “/us/lib/python3.13/site-packages/blivet/partitioning.py”, line 618, in do_partitioning allocate_partitions(storage, disks, partitions, free, boot_disk=boot_disk)
File “/usr/lib/python3.13/site-packages/blivet/partitioning.py”, line 971, in allocate_partitions raise Partitioning ErrorL
(“Unable to allocate requested partition scheme.”)) blivet.errors.PartitioningError: Unable to allocate requested partition scheme.

Does anyone have any ideas what I might be missing? I’ve been chatting with the Bazzite devs at Universal Blue, and they’re not sure what the issue could be but suspect it’s related to my larger SSD.

I see that Bazzite is based on Fedora. But has its own installer.

Try installing from a fedora live usb to see if the problem is hardware or installer based. Once you know the answer to that the Bazzite folks might have more info to understand your issue.

Hard to tell without logs (that’s where actually reporting the bug would help, Anaconda automatically uploads all logs from /tmp to bugzilla), but you are most likely hitting this bug – 2326270 – blivet.errors.PartitioningError: Failed to add the device:Unable to allocate requested partition scheme. – the installer is currently not allowing placing boot partitions at offset bigger than 2 TiB.