Adding SD card to One New Edition

[cecilrhode]

My ONE NE Europe (identified as v4, and bought last summer) is running out of memory. It has a few POIs but I now have to start removing things in order to update it. Today it failed to update the GPSFix (you know, the latest satellite positions) software as the 1GB internal memory is so full.

I was thinking of adding a SD card and transferring the map to it - later maps are not going to get smaller, and with an update to the firmware hopefully coming soon (I'm on 7.162 and 675.1409 Western Europe but want to update), its unlikely they'll fit otherwise.

Can I copy the map etc to a SD card and use it? If so, how? I've looked around (until 2am today), so apologies if this has been covered already but I haven't seen this question asked.

I'm aware of posts and the various confusion about SD card compatibility, but I assume a SDHC card won't (or is unlikely) to work?

Is there any recommended brand of card? Or speed?

I was thinking of a 2GB card which will avoid the need for SDHC and which should fit the Western Europe map and also allow another map should I need it. But will get a bigger one if thats better.

On another, similar matter, looking at the TomTom site is confusing when it comes to the various models of One and the totally illogical naming convention. Do the various One models all take the same map, or does each model need its own map version? eg, will a map meant for the 3rd Edition fit my NE?

[cecilrhode]

No suggestions?

[Wazza_G]

I think you'll find that the newer TT's accept SDHC cards, my 720 accepts a 4Gb SDHC card, even though according to TT that SDHC cards aren't supported.

If you want to try a 4Gb SDHC card then try My Memory. This is what I have installed and it accepts it.

[cecilrhode]

thanks Wazza. Mine is 12 months old so isnt exactly 'new'

the main issue is how to transfer the map etc to the card. If I get a card that isn't incompatible, thats sad but it can probably be used elsewhere, and rumour is that the latest firmware allows SDHC anyway........... but if I buy a card and can't transfer the map and TomTom isnt usable, thats worse.

[Andy_P]

Woah.
The One New Edition does NOT take SDHC cards according to TomTom.
A couple of people have suggested that the latest software update has allowed it, but as some SD cards did sort of work sometimes anyway, I'd say "case not proven!"

Also the One New Edition cannot use both the internal memory and the SD card slot at the same time. It's one or the other.

Therefore you need to buy a non-SDHC card (you can get them upto 4GB) and copy EVERYTHING from the internal memory to the card. The TT should then boot from the card next time you switch it on.

[cecilrhode]

thanks very much Andy.

I remember that you couldnt have maps on the SD and internal memory, but thought other things required to run the thing could reside on the int flash.

So its as simple as copying everything from the int flash to the card?


ok, if everything has to go, maybe 2GB won't be enough, just not been able to find a 4MB non SDHC. Have to keep looking.

Is there any particular speed? I think I read something about minimum read speed of 10MB/s (ie x66 I think)

Is there any advantage/disadvantage of a faster one?

Thanks for confirming SDHC won't work. I had big suspicions but not been able to confirm it, and youre right, I have read some users find SDHC works with the latest firmware but also plenty of examples where the same card works in some units but not others, and thats without considering fakes..... could be coincidence or could be that latest f/w allows SDHC. If I can get a non HC card big enough and fast enough, I dont need HC so I'm not bothered, its not going to hold MP3s etc, just maps.

Seen Sandisk Ultra III with 20MB/s read speed, but only up to 2 GB. Would that card type work anyone know (reasonably sure)?

Thanks for the help, much appreciated, great site but so big its hard to find things.

[mikealder]

Have you considered two SD cards both would have to contain the operating system, voices etc but could have different maps installed to each card, the 66 speed cards will be OK in the device, and don't forget removing the card will force the unit to use whatever map and OS is installed to the built in memory - Mike

[Andy_P]

"Transcend" and "Topram" were two names that kept cropping up when the discussion about 4GB non-SDHC cards was "hot".
A search on those names brings up lots of hits.

[cecilrhode]

thanks for your comments both.

it did occur to me that the unit should boot from the internal memory if there was no card present, so that I could have a small map internally, and the bigger map on the card which might make a 2 GB card sufficent

thanks for the suggestions Andy, I'll have a look for those brands.

[cecilrhode]

thanks for your help guys. problem solved.

taking on board what you said, i decided I didnt need 4GB (which seemed either difficult to obtain or sold at a premium) and bought a Sandisk 2GB Ultra II. Copied all the files to it and it works no problem.

but, before that, I realised I had a Sandisk card in my Garmin etrex............ 2GB micro, but I found the adapter and decided to give it a whirl whilst waiting for delivery of the Ultra. The card isnt marked with any speed or model etc but it cost about £14 last summer from a computer shop. anyway, it worked as well. no problem.

so, Ultra card arrived, files copied, test drive done, no problems.

One more question. what is the best procedure for changing the card? Is it ok to insert or remove the card when the device is on, or should it be turned off first. I've tried both and it seems ok to leave it on. In fact, its not booted properly when I've turned it off before changing the card.

thanks for your advice.

[mikealder]

I would only insert/ remove the SD card with the device switched off, otherwise you stand a good chance of messing up the MapSettings.cfg file which is in the map folder - Mike

[cecilrhode]

thanks Mike

that what I thought, I thought it better to treat it like other removable media and make sure its not being accessed before putting in/out, but when I've done that it hasnt always booted up properly, but I'll try it again and see if there is a persistent problem.

a good thing about having a removable card is that I can update it via a card reader which is faster than TT

BTW, in my research, I came across a site with a comparison of SD card speeds. maybe its been seen before, but it might help someone else looking for info:

http://www.valuemedia.co.uk/sd_chart.htm

also, BTW(!) I got the SD card from www.play.com £7.99 inc postage. Ordered friday, delivered Monday

[cecilrhode]

experiencing problems with this now. in the main, unless the card is inserted with power on, it is ignored.

I've now got a map on the internal flash, and another one on the SD card

if i insert/remove the card with the unit on, it shows a yellow progress bar on the bottom and boots up and works normally. the swapover to the other map works ok.

If i insert the card with the unit off, it isnt detected and it boots to the internal flash. just once or twice it started to boot to the internal flash but then quickly switched to the card (different splash screens so i know which map system is being accessed).


if i power off and remove the card, then power on it shows the progress bar and boots to the internal. On power off and then power on a second time, its dead. it will only boot up on connecting to the PC or using the reset switch. after connecting to the PC, it will boot up as usual, but on power off, it is again dead ie, connecting to the PC does not restore full functions but does allow it to boot up. doing a reset however cures the problem and it will power on/off normally.

the card seems secure, and if its inserted with the unit on, is detected reliably, and when its removed with power on it switches to internal flash ok. the problem is only when the unit is off when the card is inserted or removed.

this seems to be the case for both cards, so dont think its a faulty card issue. the lock on the card is also off (though I understand this doesnt matter), and the contacts on both cards have marks that are consistent between cards and between the contacts, so physical contact seems to be ok.

Ive just removed the card with it switched on but with it accessing the internal flash, and it went through a reboot and 'switched' to the internal, so the card had been detected in some way (maybe mechanically) but wasnt accessed.

maybe I made a mistake copying the files? if so what? any other ideas?

[Kar98]

Here's a couple of points:

The One New Ed. (One v4) does recognize SDHC cards. Because TomTom Home _doesn't_ recognize cards over 4 GB, I'd stick with one of that size.

For your other problem:
Turn the device on. Insert card so it re-boots from it. Hold down power button and poke the hole at the bottom with a paper clip until and make it reboot. You should get the tomtom logo and a drum solo ;)

Your device should now boot from the card without having to start it from internal memory first.

[Andy_P]

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