Fix Virtual Box 7.x VERR_NO_LOW_MEMORY error when booting VM:

This is an error if you have to little available swap space, no swap space at all or swap is disabled on you're system, to fix this error:

1. Close Virtual Box.
2. Run this command: "echo 1 | sudo tee /proc/sys/vm/drop_caches".
3. Restart Virtual Box and booting the VM should now be successful.

Source | Date: February 28th 2025

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