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GRUB error: unknown filesystem

Fresh7 days ago
Mar 15, 202633556 views
Confidence Score0%
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Problem

I replaced my old laptop drive which was win7 and ubuntu dual boot with an SSD. Now I connected the old drive through a USB adapter and I want to boot from it. But this comes up: As i need the programs from old drive I have to boot from it time to time and I don't want to install those software on …

Error Output

unknown filesystem
grub rescue>

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1 Fix

Canonical Fix
Unverified Fix
New Fix – Awaiting Verification

Fix for: GRUB error: unknown filesystem

Low Risk

The most expedient way would be, I think, to... copy the old drive onto the SSD. Virtualization also might be a way, converting the USB disk to a "raw" image and running it full screen (it works well with USB3). Otherwise, you have to boot from grub…

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Environment