Ohh....OK,I will test it.Thanks a lot.

OK,whatever is all ok.

xenoprof: Initialization failed. AMD processor family 23 is not supported

Could any solution?

I want upgrade to 7.6 because it's will restart system when use xcp-ng 7.5. But I don't know what problem.I think maybe AMD CPU support problem or IOMMU.So, I upgrade it.

@r1 Only one can't start is show "virtual disk could not be found".I deattach disk and delete this vm.And re-create new vm then attach orig disk.It's all ok.
This VM can running on 7.5 because I first xcp-ng version is 7.5. I use import to xcp-ng from virtualbox.

@r1 I has update from 7.5 to 7.6.It's only one VM has virtual disk problem.Another Vm is all ok.I don't know what's this problem?

Thanks a lot.
I use xl dmesg this command I found this message.

(XEN) [    0.478742] AMD-Vi: IOMMU 0 Enabled.
(XEN) [    1.670562] xenoprof: Initialization failed. AMD processor family 23 is not supported

I know IOMMU is support at XCP-ng 7.6.But cpu not support it.

Hello,
I has upgrade xcp-ng to 7.6 rc version.The IOMMU has support it.But the amd ryzan cpu always not support it.It's may need kernel 4.11 version.Could upgrade new kernel in the feature?