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I have an SSD I use as a cache drive for a few different applications. Rather than manually clean it all the time, I think it'd be nice to have the drive be formatted at boot time, since the applications in questions automatically recreate the directories they need at startup.

I'm aware I can make a powershell or batch script that simply calls format X: /q at bootup. This is my plan, assuming no one here has better suggestions, which brings me to my main question: I'm wondering if there's a more elegant way. Namely,

  1. Can I format the drive/partition by GUID, rather than by drive letter? This way, I can ensure that it'll never format the wrong drive if drive letter settings get mangled somehow.
  2. Is there a filesystem whose drivers auto-wipe on startup, perhaps specifically for caching applications? This isn't required, it's more of a curiosity or a "right tool for the job" sort of thing.
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    I'm pretty sure this will significantly reduce the lifespan of your SSD.
    – LPChip
    Commented Oct 31, 2022 at 7:26
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    This feels like an XY Problem. Why do you think you need to clear these caches all the time?
    – Tetsujin
    Commented Oct 31, 2022 at 7:28
  • @LPChip How? If you're overwriting a handful of blocks at the start of a partition, once or twice a day at most, it can't possibly be any worse than typical uses would be on any other SSD.
    – Will Preston
    Commented Oct 31, 2022 at 8:38
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    Formatting the disk will make an SSD run trim on everything, touching every single block on the SSD rather than only the few blocks that contained data.
    – LPChip
    Commented Oct 31, 2022 at 9:14

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