peter@ath64:~/downloads$ fdisk -l /dev/sdd

Disk /dev/sdd: 40.0 GB, 40000536064 bytes
255 heads, 63 sectors/track, 4863 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1               1           5       40131    0  Empty
/dev/sdd2               6        4863    39021885    b  W95 FAT32
peter@ath64:~/downloads$ dd if=/dev/sdd of=mbr.bin count=1
1+0 records in
1+0 records out
512 bytes (512 B) copied, 0.00011 seconds, 4.7 MB/s
peter@ath64:~/downloads$ dd if=/dev/sdd1 of=bootpartition.bin
80262+0 records in
80262+0 records out
41094144 bytes (41 MB) copied, 5.21612 seconds, 7.9 MB/s
peter@ath64:~/downloads$ ./ipod_fw -o apple_os.bin -e 0 bootpartition.bin
peter@ath64:~/downloads$ ./ipod_fw -g 4g -o rockboot.bin -i apple_os.bin bootloader-4g.bin
Generating firmware image compatible with iPod mini, 4g and iPod photo/color...
peter@ath64:~/downloads$ dd if=bootloader-4g.bin of=/dev/sdd1
7625+1 records in
7625+1 records out
3904036 bytes (3.9 MB) copied, 7.15729 seconds, 545 kB/s
peter@ath64:~/downloads$ cp -r .rockbox/ /media/ipod/