TT940 microSD woes. It is going OUT the window! Argh!

aerotec

Hey all,

TT940 refuses to boot when the microSD is inserted. However it allows me to "Connect to Computer" and I can operate the device correctly from within Home. If I remove the microSD it boots and goes in to the US map (Western Europe is on the microSD). I have tried copying a backup to the card, deleting mapsettings.cfg and it still won't boot when removed from the cradle and the microSD inserted.

Any suggestions before I bin it?

Andy_P · Posted: Mon Feb 18, 2013 8:44 pm Post subject:

Don't put the operating system on the card, there's no need.

The system can see both memory locations at the same time, so it is best to run the unit off the internal memory and just add maps etc. on the SD card.

SO, if the system works without the card inserted, then delete everything from the card that is NOT in a folder and try again.
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matthewj · Frequent Visitor Joined: Apr 03, 2006 Posts: 751

Interesting. I copied the whole lot from the original internal TomTom 740, and then copied everything to the new SD card. Both using Windows Explorer. Once I have done that, I can "operate" the SD card which Home pretends is the device, and it all works fine. It works in the TomTom too of course, and loads the OS from the SD card without trouble.

You have to be sure you have everything copied, and I think there was some file in the root, or was it the drive name or something? And check that it is the right format - FAT32.

Anita · Posted: Tue Feb 19, 2013 11:30 am Post subject:

Have you tried a different SD card? If not it might be worth a try.
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Anita
TomTom VIA 135 - App 12.075
UK map 1125.12264
Samsung Galaxy S21

DennisN · Posted: Tue Feb 19, 2013 8:23 pm Post subject:

Was the x40 device the one which gave trouble using it as a card reader for copying? Copy instead to hard disk then to x40?
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Dennis

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Two of them are obesiting!!

matthewj · Frequent Visitor Joined: Apr 03, 2006 Posts: 751

The x40 can take the SDHC but only act as a reader up to 2Gb IIRC, so you have to use the card in a reader for larger files. But Home handles this all quite nicely.

aerotec · Posted: Wed Feb 20, 2013 1:20 pm Post subject:

Hi all,

Thanks for the comments. To confirm my set up:

Device memory has the software and North America mapping. The microSD just has the Western Europe maps, POIs.

I tried copying the microSD content to a different 8gb card and still had the same issue. I then copied a back up to the microSD and it did the same. It wasn't until I reformatted the device and copied a device back up that I got it working again. I then re-installed the latest map on to the microSD and it now works again. Looks like something on the device corrupted?

Just a real pain as everytime I install a new map or software update I end up with problems booting up.

Thankfully it is working ok now and I am just talking nicely to it in the hope it keeps working!

Richard

matthewj · Frequent Visitor Joined: Apr 03, 2006 Posts: 751

FWIW, I have two SD Cards. When an update comes out, I take the card out, I make a complete copy, then I put the SD card aside, then I grab the alternate SD card and wipe that, then I copy the contents of the first to the alternate, and then I put it in the reader for Home to look at and I let it do the update. If something fails, then I still have the original SD card to use. One time some download went all wrong, and I just wiped and copied the old content again and then started over.

This is the only sane way IMO.

aerotec · Posted: Thu Feb 21, 2013 12:28 pm Post subject:

Matthew,

Simple idea I never considered! I will do that in future as I have a bad habit of connecting to Home just before a big trip and getting updates to download. This is when it all goes horribly wrong!

I'll try your suggestion when there is a new map/OS.

Richard

exportman · Posted: Thu Feb 21, 2013 12:40 pm Post subject:

Hi

Also the size of your SD card I know other tomtom models have a problem recognising cards over 4GB I don't know it this is an issued for the 940 series.

aerotec · Posted: Thu Feb 21, 2013 12:49 pm Post subject:

I am using 8Gb cards but usually if a device won't read it it just won't read it and therefore I don't think any corruption is due to the card size. Unless anyone knows otherwise...?

Andy_P · Posted: Thu Feb 21, 2013 6:17 pm Post subject:

matthewj · Frequent Visitor Joined: Apr 03, 2006 Posts: 751

aerotec · Posted: Fri Feb 22, 2013 6:03 pm Post subject:

Never had a problem installing 2.3Gb map updates to the microSD when in the TT940 and docked in the cradle. It is just general system stability issues that creep in after map updates that cause me problems.

Andy_P · Posted: Fri Feb 22, 2013 11:52 pm Post subject:

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