Then is one region with HDD.
Can you look what region have more that 100Mb?
I can erase this region from scaning and then you can scan all on 1Gb SD.

On 1xxx is region 48 backup of nuvi HDD
ON new nuvi is region 83 backup of nuvi HDD.

p.s.
Sorry for my mistake.
I found problem, i add region 83 for scan in before rar.
You can scan with this where i remove reg 83 and now you can scan on 1Gb SD

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