Windows install partition selection fails on bcachefs filesystem

[kajaoss]

I have CachyOS with kernel 6.16.5-2-cachyos. The windows installation proceeds but stops at the screen showing partition selection. When I click next it gives error "There is an error selecting this partition for install. Please select a different partition or refresh selections." I tried also manually creating the partition but it also results in error.

I guess the error might be related to my bcachefs root filesystem. In the past I had some problems setting winapps with similar problem. I don't recall how I fixed it but I got it working eventually. Maybe a workaround for now would be a setting for docker container location to use on another filesystem.

[TibixDev]

Hey, this seems to be an issue originating from dockur/windows so you may be able to find something helpful on their side, and if not then you could create an issue there.

In the meantime, if there's something we can add to our compose file that'd fix this please let me know. 😄

[kajaoss]

I got the install and environment working by using these flags in the docker-compose.yml file: environment: DISK_IO: "threads" DISK_CACHE: "writeback"

I found the options from a similar discussion (not directly related to bcachefs but O_DIRECT support) here in dockur/windows issues.

I think those should be only included when using bcachefs as they can make disk access slower. The problem might be good to investigate also for btrfs if it has the same problem.