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Discussion Starter #1
If you find your GPS to be slow and sluggish, taking forever to calculate take heart. There may be a solution if you have a microSD card slot. I bought my Garmin 1390 4 years ago for $80 with lifetime map upgrades. Originally the GPS wasn't that fast but hey, it works great for $80. Then three years ago I did a map update and it slowed down. Two years ago I tried to do a map update and couldn't, I really didn't need it so I just put it out of my mind. Recently I decided to waterproof it and called Garmin. Turns out that my GPS was so full it couldn't connect. Garmin had me delete some voices and got into the unit with Garmin Express. However the new maps would only let me install east coast, mid america or west coast. After installing the east coast my unit was faster than ever. I ordered an 8GB microSD card and reloaded with all the maps on the microSD. This is now the fastest GPS I have ever owned. By having all the maps on the microSD it calculates instantly.

To check your GPS hook it up to your PC and check it like a HD for space.

So if your GPS is slow and you have a microSD slot, the 8GB card is like $3 and it will work better than it ever has. Should apply to any GPS brand
 

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Discussion Starter #3
Great suggestion, thanks! I'm moving my music to an SD card and removing unused files in the process. I'll move the maps over, too.
Bob

If you would come back after you move your files and let us know the end result, with the brand and model you have, it would be greatly appreciated!
 

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Will do.

I'm working with a ZUMO 660 LM and 8 gig SD card. I'm converting my AAC music files to MPEG3 at the moment (since the ZUMO doesn't like the Apple stuff) and then loading the GPX files for our ride (PA to UT loop) onto the card.

I had used the ZUMO in the Everglades last year - loaded the BlueWater Garmin maps for North America - and it worked okay. I eventually moved to a marine unit but the ZUMO stood up to the salt pretty well.

I did notice that it was slow to calculate routes the other day so your suggestion is really timely.
 

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my garmin has enough storage to hold the replacement maps, so i delete the original and replace it with the downloaded copy
 

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My Garmin Nuvi 765T is a 2010 model and the newer maps are too big to be stored in the internal memory. I got a nice fast SD card for it last year and it does seem to be faster.
An added advantage is that with a 8GB card I can now have the entire map and 3D buildings and points of interest on the unit instead of having to pick a region and no 3D stuff.
 

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Will do.

I'm working with a ZUMO 660 LM and 8 gig SD card. I'm converting my AAC music files to MPEG3 at the moment (since the ZUMO doesn't like the Apple stuff) and then loading the GPX files for our ride (PA to UT loop) onto the card.

I had used the ZUMO in the Everglades last year - loaded the BlueWater Garmin maps for North America - and it worked okay. I eventually moved to a marine unit but the ZUMO stood up to the salt pretty well.

I did notice that it was slow to calculate routes the other day so your suggestion is really timely.
The more music on your SD card the slower your 660 will startup. This gets noticeable if you have 16 gigs of music on the card.

FWIW the Zumo 660 now needs an SD card if you are loading the maps for all of North America. I don't think the OP's tip makes any positive speed difference on the 660 but then I have had an SD card in it pretty much since I bought it.

..Tom
 

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My Garmin Nuvi 765T is a 2010 model and the newer maps are too big to be stored in the internal memory. I got a nice fast SD card for it last year and it does seem to be faster.
An added advantage is that with a 8GB card I can now have the entire map and 3D buildings and points of interest on the unit instead of having to pick a region and no 3D stuff.
i have the same model, as i stated i deleted the on board map (after backing it up) and put the downloaded updated map in it's place.
 

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Discussion Starter #10
The more music on your SD card the slower your 660 will startup. This gets noticeable if you have 16 gigs of music on the card.

FWIW the Zumo 660 now needs an SD card if you are loading the maps for all of North America. I don't think the OP's tip makes any positive speed difference on the 660 but then I have had an SD card in it pretty much since I bought it.

..Tom
Don't know. I do know the Nuvi uses a linux platform. I can assume that the Zumo probably does as well, I see no reason for them to have anything else because it would just be a bigger support issue. Something every company is trying to avoid.

That being said the reason I moved ALL my maps to the microSD drive is to make sure that the swap file linux creates on the main drive isn't hindered. Well that and my main flash drive wouldn't really hold all the maps. If the unit is trying to pull information from the map files and use the swap file and they are on the same flash drive it just takes longer to calculate. Hence when it's re-calculating and gets the map from one drive and the swap is on the other you see a much faster calculation.

But most of what I am seeing on my Nuvi may be how slow the internal flash is. I have no way to know. The Zumo may have a much faster flash. The Nuvi apparently does not.
 

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I haven't dug in that deeply but out of curiousity how do you move the maps to the SD card? I don't recall it being a choice on the 660 (but really haven't looked.)

..Tom
 

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Discussion Starter #12
I haven't dug in that deeply but out of curiousity how do you move the maps to the SD card? I don't recall it being a choice on the 660 (but really haven't looked.)

..Tom
When you update the maps, I have lifetime maps, on the unit you use Garmin Express. Garmin express will allow you to either have the maps on the GPS or on the microSD card. From what I can see its one or the other, just pick. Garmin Express runs on the PC.
 

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When you update the maps, I have lifetime maps, on the unit you use Garmin Express. Garmin express will allow you to either have the maps on the GPS or on the microSD card. From what I can see its one or the other, just pick. Garmin Express runs on the PC.
I don't recall on Express there being an either/or choice in the 660 apart from either install part of the maps or use an sd card for additional map storage.

Perhaps Express gives different choices depending on the unit and situation.

(It certainly has different choices for my fitness tracker!)

..Tom
 

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Discussion Starter #14
I don't recall on Express there being an either/or choice in the 660 apart from either install part of the maps or use an sd card for additional map storage.

Perhaps Express gives different choices depending on the unit and situation.

(It certainly has different choices for my fitness tracker!)

..Tom
I believe it won't give you the option if it doesn't see a supported microSD card in the unit.
 

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I am a windows user. My ZUMO showed up as the F drive and the SD card showed as the G in File Explorer. I created a Garmin folder on my SD card and then moved the 3 gmapprom files (the .img, .unl, and .gma files) from the "Garmin" folder on F to the newly created "Garmin" folder on G drive. The ZUMO didn't see the map information and I scratched my head until I remembered that "gmapprom" has to be changed to "gmapsupp" on the SD card. I edited the file names and took it out for a spin. Everything seems fine now after one ride. I'm putting some .gpx files on it next.
 

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I believe it won't give you the option if it doesn't see a supported microSD card in the unit.
However I do have an SD card in the system and (on the 660) it uses it for maps. It just never gave a choice to install on the SD card instead of internal memory. The choice was to use the SD card to be able to install the full North American maps or don't used the sd card and only install part of the maps.

..Tom
 

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Discussion Starter #17 (Edited)
However I do have an SD card in the system and (on the 660) it uses it for maps. It just never gave a choice to install on the SD card instead of internal memory. The choice was to use the SD card to be able to install the full North American maps or don't used the sd card and only install part of the maps.

..Tom
Exactly. Apparently there isn't enough room in the 660 (I have the same issue) for all the maps so it gives you the choice to use the internal for partial map or the microSD for all the maps. By using the microSD you freed up the drive to just run the swap file. Your re-calculations should be fast as you can hit two drives now and split your processes. It's an early Windows trick to improve system speed, I can't really claim it as new.
 

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JackinCT, I'm guessing you do not have a SD card installed.

My 660 had no card, everything installed internally from the factory. Got that same message. Installed a 8 gig micro sd card. Installed it and could see it on explorer but Express would not install. Messed with it and finally got it to install. Can't tell you exactly what I did wrong (because I tried so many things) but I think it was as simple as turning on the gps BEFORE hooking it up to the computer. After it found the card it loaded with what I'm thinking is the 2017 version. It did take 5 gigs of the new sd card.
 

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My Garmin GPS functions worked well during a 3 week loop from PA to Co and back. It wasn't noticeably slower with all of the music and maps loaded onto the card. The unit responded quickly to input changes on the fly and I'd term the entire operation a success (so far).

I did have issues between my phone, the Garmin and my Sena SMH10R that made phone conversation impossible and required a headset restart sometimes in order to hear music and intercom clearly. This may be because I was intercom linked to a Scala Rider headset (which treated that link as a phone link) or it may be that the updated headset software went wonky. I'm curious so I'll be simplifying the connections and re-trying it...
 
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