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installed Ubuntu on VM and I've used it for 2-3 weeks - everything was working but today...

I try load my machine with Ubuntu but it gives me an error:

Gave up waiting for root device. Common problem: ...



ALERT! /dev/disk/by-uuid/6134075f-a24a-4714-8208-5740d9339e60 does not exist. Dropping to a shell!

BusyBox v1.13.3 built-in shell (ash)

Enter 'help' for a list of built-in commands


How can I resurrect my machine?


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