[SOLVED] Installing from 17.7.5 boot image "failed with a return code of 1"

[Alphabet Soup]

Trying to do a clean install of 17.7.5 amd64 via USB memory stick on an OPNsense Quad Core Gen3 rack appliance (4GB RAM, 2GB CF), and it fails around 77%:

Code: [Select]

Execution of the command

/usr/local/bin/cpdup -vvv -I -o /usr/share /mnt/usr/share

FAILED with a return code of 1.

< View Log >  < Mail Log >  < Retry >  < Cancel >  < Skip >

Searching the forums I found:
[WONTFIX] Boot media for 15.1.9 : error 1 at installation.
https://forum.opnsense.org/index.php?topic=307.0

Is this the same cpdup / memory exhaustion problem, and is there anything I can do to salvage this unit?  As it has aborted mid-install it no longer boots from the CF.  It was running 17.1.4 just fine prior to this.


UPDATE / SOLVED!
Choosing MBR instead of GPT got it working.