Virtual machine boot failures are a frequent issue in daily operations and can stem from several causes. The most common include insufficient disk space on the host, conflicting or corrupted snapshots, or a lack of available resources such as CPU or memory. In some cases, misconfigured settings or driver errors may also be to blame. It's recommended to start by checking platform logs (e.g., vmware.log for VMware, or task logs in Proxmox) to identify any specific error messages. Once the root cause is identified, actions such as deleting unnecessary snapshots, expanding disk capacity, or migrating the VM to a less loaded host can often resolve the issue quickly.
