[prex:/]# boot/xxd
NAND opened.
Reading 512 bytes from block 197632.
00000000   EB 58 90 6D  6B 64 6F 73  66 73 00 00  02 08 20 00  .X.mkdosfs.... .
00000010   02 00 00 00  00 F8 00 00  3E 00 3F 00  3E 00 00 00  ........>.?.>...
00000020   00 C2 3C 00  29 0F 00 00  00 00 00 00  02 00 00 00  ..<.)...........
00000030   01 00 06 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
00000040   80 00 29 8D  01 0C 4A 20  20 20 20 20  20 20 20 20  ..)...J
00000050   20 20 46 41  54 33 32 20  20 20 0E 1F  BE 77 7C AC    FAT32   ...w|.
00000060   22 C0 74 0B  56 B4 0E BB  07 00 CD 10  5E EB F0 32  ".t.V.......^..2
00000070   E4 CD 16 CD  19 EB FE 54  68 69 73 20  69 73 20 6E  .......This is n
00000080   6F 74 20 61  20 62 6F 6F  74 61 62 6C  65 20 64 69  ot a bootable di
00000090   73 6B 2E 20  20 50 6C 65  61 73 65 20  69 6E 73 65  sk.  Please inse
000000A0   72 74 20 61  20 62 6F 6F  74 61 62 6C  65 20 66 6C  rt a bootable fl
000000B0   6F 70 70 79  20 61 6E 64  0D 0A 70 72  65 73 73 20  oppy and..press
000000C0   61 6E 79 20  6B 65 79 20  74 6F 20 74  72 79 20 61  any key to try a
000000D0   67 61 69 6E  20 2E 2E 2E  20 0D 0A 00  00 00 00 00  gain ... .......
000000E0   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
000000F0   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
00000100   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
00000110   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
00000120   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
00000130   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
00000140   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
00000150   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
00000160   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
00000170   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
00000180   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
00000190   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
000001A0   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
000001B0   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
000001C0   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
000001D0   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
000001E0   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
000001F0   00 00 00 00  00 00 00 00  00 00 00 00  00 00 55 AA  ..............U.
[prex:/]# mount /dev/nand /mnt fatfs
VFS: Mounting fatfs dev=/dev/nand dir=/mnt
NAND opened.
Reading 512 bytes from block 197632.
[prex:/]# cd mnt
[prex:/mnt]# ls

Assertion failed: mutex.c line:295 'err == 0'