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SecureBoot and VirtualBox kernel modules

Installing VirtualBox on Ubuntu 18 (same as for modern Fedora Core) with SecureBoot will result in the following error when running the command /sbin/vboxsetup The error message would be something like this: There were problems setting up VirtualBox. To re-start the set-up process, run /sbin/vboxconfig as root. If your system is using EFI Secure Boot…

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Clone corrupted disk in XenServer

Following some unknown problems, I had recently several XenServer machines (different clusters, different sites and customers, and even different versions) with a VDI-END-of-File issues. It means that while you can start the VM correctly, perform XenMotion to another server you are unable to do any storage-migration task – neither Storage XenMotion, nor VDI copy or…