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Cake day: July 1st, 2023

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  • I’ve done this with Debian before, and it works fine. Linux usually mounts the root filesystem based on its UUID, so it doesn’t matter if changing the motherboard caused a change from /dev/sda to /dev/sdb .

    If you use the proprietary Nvidia driver, make sure to update it to a version that supports the new video card. If you use the open source Nvidia driver, you should be fine even if it’s old, because it will at least support starting up in an unaccelerated mode.











  • I must disagree. For example, the Magnuson–Moss Warranty Act entitles you to use aftermarket parts in your product without invalidating your warranty, as long as the aftermarket parts don’t cause damage. I agree with the spirit of this law, and I believe software should be considered a “part” in this context.





  • A “cold boot” attack. These have been around for a while.

    The degredation is not a huge barrier. Spraying inverted canned air can cool the DRAM enough to preserve it for a little while, even long enough to switch it to a new motherboard. Whenever the motherboard is powered, the DRAM is being refreshed, so won’t degrade. A few bits lost is no fatal flaw, since most cold boot attack algorithms search for long key schedules, not just the key.

    Bitlocker is extra vulberable because it stores the key in the TPM and requires no password to boot. An attacker can extract the key even if the computer is off when they get it.