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

[swanilli]

Thanks. Just goes to show there is nothing new under the sun!



2009/8/22 Dan O'Hara <ohara5 at homemail.com.au>:
> Hi guys
>
> Here is an extract from the Garmin Oregon Wiki
> (http://garminoregon.wikispaces.com/Maps#toc20) on multiple img files.
>
> "M17.) How do I use multiple map (.img) files to help me better manage maps
> on my Garmin Oregon?
>
> Even though Mapsource and MapInstall always save maps sets as
> [drive]:\Garmin\gmapsupp.img this file can be renamed once it is on the
> Oregon to any name (as of beta software 2.99) as long as the .img extension
> is preserved. This is very helpful if you want to manage multiple maps sets,
> say one for your home area that would change infrequently and one for a
> travel destination(s) that you might change frequently. The steps for doing
> this are:
>
>   1. Follow the procedure in M15 to create and download your home map set
>   2. Using a file explorer on your computer locate
> [drive]:\Garmin\gmapsupp.img and rename the file to
> [drive]:\Garmin\myhomemaps.img
>   3. Follow the procedure in M15 to create and download your travel map set
>
>
> When you are done with your travel map set this file can be deleted and
> replaced with a new map set for your next destination without having to
> rebuild and transfer your home map set."
>
> Previously to 2.99 you would have had to rename the gmapsupp.img to one of
> only 2 other files names (although you could save gmapsupp.img also to the
> MSD card).  Renaming to anything else meant that the file could not be read
> by the unit.  Now you can rename gmapsupp.img to any name to fit more maps
> on (provided space and only 1 gmapsupp.img on the unit and only 1 on MSD
> etc).
>
>
> Dan
>
>
>
> -----Original Message-----
> From: newbies-bounces at openstreetmap.org
> [mailto:newbies-bounces at openstreetmap.org] On Behalf Of swanilli
> Sent: Saturday, 22 August 2009 2:36 PM
> To: newbies at openstreetmap.org
> Subject: Re: [OSM-newbies] Multiple gmapsupp.img files on Garmin
>
> Hi Bill
>
> It seems that it does have to be uploaded as gmapsupp.img first.
>
> When I start my Oregon 300, a "Loading maps" (or some such) message
> appears at the bottom of the screen. My guess is that it must be
> locating the maps in memory rather than in their files, hence the name
> change does not cause them to be lost.
>
> I have tried copying the files (not named gmapsupp.img) but they seem
> to be ignored – they are only recognised if named gmapsupp.img at
> least once.
>
>
> 2009/8/22 Bill Ricker <bill.n1vux at gmail.com>:
>> 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
>>
>> Bill
>>
>>
>>
>> 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.
>>>
>>> Problem: I regularly update my local OSM data (since I am in Australia
>>> from http://www.osmaustralia.org/garmin.php) but I also have other
>>> maps, notably topographic, on the Garmin uit that I don't change. If I
>>> upload the combined gmapsupp.img using MapSource it takes forever.
>>> What would be nice would be to only upload the tiles that have changed
>>> but the conventional advice is that there can only be one gmapsupp.img
>>> file per drive i.e. one in the base unit and one on the micro SD card.
>>>
>>> Method:
>>>
>>> 1. Upload to Garmin unit the unchanging maps. This creates (or
>>> overwrites) a file called gmapsupp.img.
>>>
>>> 2. Disconnect the Garmin unit, switch on, then open and check the map
>>> uploaded.
>>>
>>> 3. Reconnect the Garmin unit to your computer and locate the
>>> gmapsupp.img just created.
>>>
>>> 4. Change the file name to anything else e.g. gmapsupp-topo.img.
>>>
>>> 5. Disconnect the unit and switch on again. The original maps will
>>> still be there.
>>>
>>> 6. Reconnect and upload a new set of maps. This will create a new
>>> gmapsupp.img file but not overwrite the first lot of maps.
>>>
>>> 7. Repeat the steps above, changing the file name each time.
>>>
>>> 8. To overwrite data, change the name of the file back to gmapsupp.img
>>> and upload new maps. (No sure if the file can't just be deleted but I
>>> have been getting the "The map set is approximately nnMB, but only
>>> nnnMB is available in the destination. Please select fewer maps and
>>> try again." message from MapSource.)
>>>
>>>
>>> There seems to be no limit to the number of files that can be handled
>>> in this way. I have 16 at present making it very quick to add or
>>> update existing data.
>>>
>>> _______________________________________________
>>> newbies mailing list
>>> newbies at openstreetmap.org
>>> http://lists.openstreetmap.org/listinfo/newbies
>>
>>
>>
>> --
>> Bill
>> n1vux at arrl.net bill.n1vux at gmail.com
>>
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