Thread: Multiple maps on SD Card

Hi all, I own an Oregon 550 (1 GB of internal memory) with a 4 GB Micro SD Card, Fat32.
In the internal memory, under /Garmin, I have:
gmap3d.img (from CN EU 2011.10)
gmapbmap.img (original map, non-routable)
gmapbmap.sum (?? don't know what it is)
gmaptz.img (from CN EU 2011.10)

While into the Micro SD, under /Garmin, I have:
CN EU_2011_10.img (full set, loaded with Mapsource 6.16.1 patched, unlocked with unlocker alternative New v.5.2)
G2-VEU012R.img found already unlocked
G2-VEU014R.img.xxx (found already unlocked - it seems that only one G2 can be seen at a time, so I have loaded both and add or remove the .xxx in one of them as required)
IT-TopoLand.img
TopoCH_2.img
The file names are exactly as listed, and it works perfectly. So I use these names to make sense to the content.
Cheers
Danilone

I have an etrex Vista HCx. I have downloaded Garmin Pacific Bluechart v10.5 2008.5 and Garmin Aus Topo v3. I would like to combine the charts of the East coast of Australia with as much of Eastern Australia topo as can fit (most importantly Queensland remaining states not so important) onto a 4Gb Micro SD card.
Is there a way to combine the charts and topo maps onto one SD card that will work in the etrex. If so can someone refer me to a tutorial (I've looked but can't seem to find one) or explain the process please. I have loaded the topo maps into Mapsource so that I can view which maps I need, but I can't load the charts to see which of them I need.