[Talk-us] [OSM-newbies] Multiple gmapsupp.img files on Garmin

[Greg Troxel]

Bill Ricker <bill.n1vux at gmail.com> writes:

> On Fri, Aug 21, 2009 at 10:24 PM, swanilli <swanilli at gmail.com> wrote:
>
>> I have just accidentally discovered that it is possible to have
>> multiple gmapsupp.img files on my Garmin Oregon 300. Since I have not
>> seen this method mentioned anywhere else here it is.

> I will have to try this with my 76csx
>
> Does it have to be loaded as gmapsupp.img and used once before each
> renaming?
>
> I have been placing extra *.img in named subdirs and copying to Garmin/ to
> select, but being able to switch without a usb connect would be much better,
> since states in New England are so small, I can drive across a corner of  NH
> or VT in not much longer than than it took to swap

I tried with a Vista HCx and didn't get it to work.

I have 1.3 coping strategies:

  build my own maps of new england with splitter and mkgmap.  create
  GMAPI format files.  install into roadtrip on a mac.  (script on
  request, or see the mkgmap-dev archives.)

    use garmin mapinstall to merge my tiles, proprietary maps, and
    free-beer garmin maps from the web (eg. NWTrails).

    (sometimes) just put the gmapsupp.img with all of new england on the
    device, renaming as Bill is doing, but I don't bother with subdirs.


All of new england is only 100M.  I could put it up for download, but my
map has broken interstate routing since I merged 6 cloudmade extracts.


There are also ways w/o garmin software to merge multiple .img files
into one.  sendmap can do it, and mkgmap might as well but I'm not sure.



  
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