Can make 64 GB SDXC card in Sansa Clip (using fat32) work [edited]

[uOpt]

I have this Sansa Zip Clip using Rockbox version d06779d-13-2-6
http://www.amazon.com/gp/product/B005FVNGZU/ref=oh_details_o09_s00_i01?ie=UTF8&psc=1

It works with a 4 GB microSDHC card I have.

I am now trying to use this 64 GB card:
http://www.amazon.com/gp/product/B009QZH6JS/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1

I formatted it in FAT32 a number of different ways but it is never recognized. Rockbox Info always says "HD1 not present".

Here are the actual format lines I tried, none solved the problem:
mkdosfs -f 2 -F 32 -S 512 -s 64 -v -n TFAT /dev/sdj1
mformat p:
mkdosfs -F 32 -S 2048 -n mcpod /dev/sdj1
mformat -t 2428 -h 255 -s 63 -S 4 -M 2048 -F p:

The card seems to work fine, I could fill it with 32 GB of data just fine.

Any ideas?

[uOpt]

Works every time. Post stupid question, find the answer.

Partition type. For the record I set partition type to numerical code "0b" (W95 FAT32) in Linux fdisk.
Also for the record: a plain `mkdosfs /dev/...` is sufficient.
My last mformat command was `mformat -t 2428 -h 255 -s 63 -S 4 -M 2048 -F p:` which also worked.


Now it works.

Thanks for Rockbox, BTW, it rocks.