Thread: TD5 Graphic Viewer Save

Cant answer your question but DONT format the card with FAT32
You are asking for trouble particularly if you start writing maps

I had previously formatted as FAT but the card would not save.The vehicle is a 1999 TD5 so the MSB ecu cannot be read let alone saved....is this correct?

Eddy if you plug the Nanocom into your laptop with the card inserted then format to FAT from within Windows it will work (well it does with a 2 Gig card).
I think you are right the MSB ECU is as you described.
They are very touchy one of my Nanocoms having 5 or 6 ECUs to its record I would hate to see anyone else go through what I went through.

The current advice from BBS is that FAT32 is supported, and I have been flashing maps without problems using FAT32 formatted cards.

The problem seems to lie with the way most operating systems format the card by default. When you format with Windows or OSX the disk utilities use a formatting method that maximises the available storage space, but this results in a more complex low level disc format. It seems that the FAT32 library used by the Nanocom has trouble with this.

The solution is to format the disk using a program that was developed by the SD Card industry association:

https://www.sdcard.org/downloads/formatter_3/

By default the SD Formatter software will use the same method as Windows or OSX, but this is easily changed.



This shows the MacOSX version of the app but Windows version is similar. You need to click the option button in the Select Format Option section of the app.
Select "Yes" to enable Logical Address Adjustment and then OK.



In the PC version the same option is called "Format Size Adjustment" - again you want to set this to "On".

According to the manual:

If the formatted capacity of the card is not a multiple of capacity in a cylinder, some hosts may not access the card successfully. This option adjusts formatted capacity to a multiple of capacity in a cylinder.

This will have the effect of making reads and writes to the card quicker to perform, and using this option seems to have completely solved card related read/write errors I was having. I've flashed ECU's on a number of occassions since switching to this method and the only times I've had problems is when I reformat the card and forget to set the LAA option.

cheers
Paul