this works great but in my experience sometimes you should add && sync not sure ... | Hacker News

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		ewy1 3 days ago \| parent \| context \| favorite \| on: Ubuntu 26.10 completes transition to Rust-based co... this works great but in my experience sometimes you should add `&& sync` not sure why it's necessary only sometimes!
		help

rascul 3 days ago [–]

The kernel has a cache used for block devices.

If you want to be more targeted:

    blockdev --flushbufs /dev/sda

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