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Thorsten Niehues
Asked: 2020-05-19 13:39:36 +0800 CST

Ubuntu 20.04 not starting after VirtualBox VirtualDisk resizing

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Since the virtual disk was too small I resized it via

Oracle VM Virtual Box Manager → File → Virtual Media Manager

After that the Ubuntu 20.04 Guest did not start any more (a short error message I do not remember followed by a blank screen)

I searched for a solution but the things I found looked old or strange to me.

How to fix this easily?

virtualbox 20.04

1 Answers

  1. I solved the issue by inserting a Ubuntu 20.04 ISO-image and booted from CD.

    Next increased the partitions with the "Disks" tool.

    After that I installed the tool "Boot-Repair" and executed "Recommended repair".

    Restarted the guest and it booted properly

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