SD card error

**zed** · 26-10-2018, 11:12 AM

I'm sure this has been asked before, but I can't find anything using the search engine. I can't get multiple SD cards to work on my 2009 Passat and 2014 Amarok. I'm formatting using a MAC and am choosing MSDOS (FAT). I don't think that's FAT32 however? And I'm thinking it has to be? Also I did read somewhere there's a size limitation with some models of stereo i.e they can't read SD cards bigger than 4GB? All my cards are 32GB+TIA

**Sunny43.5** · 27-10-2018, 10:18 AM

Could be the card size I have had similar problems as well admits here my stereo is aftermarket but it will only take cards up to 32 gb only any thing bigger will not work .

**Creampuff** · 27-10-2018, 05:17 PM

My Jetta couldn't take more than 8gb, but my 2015 Tiggy takes 32gb....all my music is MP3.

**Arcemsed** · 28-10-2018, 03:24 AM

Need to update otherwise much old can be corrupted.

**theresanothersteve** · 29-10-2018, 07:38 AM

FAT is your file allocation table. FAT32 (32 bit operating system) is limited to reading just under 4GB, that's why PCs are now 64 bit (but doesn't use FAT). When you format a disk you overwrite the table and, unless you do a full format, the other data remains on the disk, but because you've overwritten the table you've lost the address of the data and it can't be retrieved by normal file access protocols.

I'm not sure what file system is used by VW (I don't have the car at work so I can't check the owners manual) but I think part of the problem is formatting to FAT. Try FAT32 or similar if you can.

**theresanothersteve** · 30-10-2018, 07:24 AM

OK, I checked the owner's manual last night. You need to format FAT16 for cards under 2GB and FAT32 for cards over.

HTH

**Hillbilly** · 30-10-2018, 02:20 PM

I have an 32gb SD card in my RNS510 and its formatted as Fat32. Havent ever seen a 2gb card

Can also format cards over 32gb with this program guiformat-x64. I do this to fool my Blackvue cameras and run 128gb cards in cameras that are only supposed to use 32gb cards.

I can confirm a RNS 510 WONT read cards bigger than 32gb as Ive just tried a 64 and a 128 and it wont read them even though formatted in Fat32

**theresanothersteve** · 31-10-2018, 07:15 AM

Originally Posted by Hillbilly

...Havent ever seen a 2gb card ...

You need to get out more...

**zed** · 05-11-2018, 11:53 AM

I've got a ton of SD cards none of them work, but found an old 1GB card and that worked. I'm thinking it's related to the size. Have tried formatting the larger cards with Fat16, 32 etc