Can't mount FS on NAND

Hi all.
I'm trying to mount file system on NAND flash MT29F1G08ABADAH4. I'm using cortex m4.
Here are my NAND setting:

#define NAND0_ENABLE 1
#define NAND0_TYPE 0
#define NAND0_DRIVER 0
#define NAND0_DEV_NUM 0
#define NAND0_PAGE_SIZE 2112
#define NAND0_PAGE_COUNT 64
#define NAND0_BLOCK_COUNT 1024 // 128Mb
#define NAND0_PAGE_CACHE 8
#define NAND0_BLOCK_CACHE 16
#define NAND0_SW_ECC 1
#define NAND0_CACHE_SIZE 4
#define NAND0_CACHE_RELOC 0
#define NAND0_CACHE_ADDR 0x80000000
#define NAND0_FAT_JOURNAL 1
#define NAND0_DEFAULT_DRIVE 1

I've tried to use example from MDK 5.0:File System Component:System Routines:fmount:

void main (void) {

if (finit ("N:") != fsOK) {// error handling} if (fmount ("N:") != fsOK) {// error handling} // do smth funmount ("M:"); funinit ("M:");
}

So, i've got a problem:
finit("N0:") returnk OK, but fmount("N0:") fails with "fsMediaError" code

Can anybody help me?