Attempt to setup KVM Host on Sparky 2026.06 tolerant to Timeshift rollbacks (Assisted by Google AI )
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This post is an immediate follow up for "Sparky Linux 2026 06 OverlayFS BTRFS with Timeshift setup" . Modern virtual machines use OVMF (Open Virtual Machine Firmware) to simulate an industry-standard UEFI environment rather than an old legacy BIOS.The Role of NVRAM: UEFI requires a non-volatile random-access memory (NVRAM) variables store to keep track of boot orders, hardware configurations, and Secure Boot certificates.
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Separation of Files: In KVM, the UEFI firmware itself is read-only (e.g., OVMF_CODE.fd),
while the companion NVRAM file (e.g., OVMF_VARS.fd) stores the unique, writable
state data for that specific VM.
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