In this guide I will record the steps I completed to move the rootfs to a SSD harddrive.
When your hard disk is connected to your cubietruck power on and connect via Putty (or control directly via keyboard).

1. Check, if the hard disk was found and what kind of partitions are available:
   seiler@cubietruck:~# sudo fdisk -l

   1	seiler@cubietruck:~# sudo fdisk -l

   The resuls will look somehow similar to this:
   Device Boot Start End Blocks Id System /dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT /dev/sda2 206848 312578047 156185600 7 HPFS/NTFS/exFAT

   1 2 3

   Device Boot Start End Blocks Id System /dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT /dev/sda2 206848 312578047 156185600 7 HPFS/NTFS/exFAT

    
2. I have a sdd connected with two partitions sda1 and sda2 – sda1 has a boot flag.
3. In the next step the partitions will be deleted (yes, you will loose the data on your hdd).
   seiler@cubietruck:~# sudo fdisk /dev/sda

   1	seiler@cubietruck:~# sudo fdisk /dev/sda

    
4. With „d“ followed by the partition number you can delete a partition. In my case, I used: „d“, followed by „1“ and „d“ followed by „2“.
5. To add a new partition press „n“
   Command (m for help): d Partition number (1-4): 1 Command (m for help): d Selected partition 2 Command (m for help): 2 2: unknown command Command action a toggle a bootable flag b edit bsd disklabel c toggle the dos compatibility flag d delete a partition l list known partition types m print this menu n add a new partition o create a new empty DOS partition table p print the partition table q quit without saving changes s create a new empty Sun disklabel t change a partition's system id u change display/entry units v verify the partition table w write table to disk and exit x extra functionality (experts only) Command (m for help): n Partition type: p primary (0 primary, 0 extended, 4 free) e extended Select (default p): p Partition number (1-4, default 1): 1 First sector (2048-312581807, default 2048): Using default value 2048 Last sector, +sectors or +size{K,M,G} (2048-312581807, default 312581807): Using default value 312581807 Command (m for help): p Disk /dev/sda: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x4b1d5d07 Device Boot Start End Blocks Id System /dev/sda1 2048 312581807 156289880 83 Linux Command (m for help): a 1 w

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   Command (m for help): d Partition number (1-4): 1   Command (m for help): d Selected partition 2   Command (m for help): 2 2: unknown command Command action a toggle a bootable flag b edit bsd disklabel c toggle the dos compatibility flag d delete a partition l list known partition types m print this menu n add a new partition o create a new empty DOS partition table p print the partition table q quit without saving changes s create a new empty Sun disklabel t change a partition's system id u change display/entry units v verify the partition table w write table to disk and exit x extra functionality (experts only)   Command (m for help): n Partition type: p primary (0 primary, 0 extended, 4 free) e extended Select (default p): p Partition number (1-4, default 1): 1 First sector (2048-312581807, default 2048): Using default value 2048 Last sector, +sectors or +size{K,M,G} (2048-312581807, default 312581807): Using default value 312581807   Command (m for help): p   Disk /dev/sda: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x4b1d5d07   Device Boot Start End Blocks Id System /dev/sda1 2048 312581807 156289880 83 Linux   Command (m for help): a 1   w

    
6. In the next we are formating the newly created partition:
   seiler@cubietruck:~# sudo mkfs.ext4 /dev/sda1

   1	seiler@cubietruck:~# sudo mkfs.ext4 /dev/sda1

   Output looks like:
   mke2fs 1.42.5 (29-Jul-2012) Discarding device blocks: done Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 9773056 inodes, 39072470 blocks 1953623 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=0 1193 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done

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   mke2fs 1.42.5 (29-Jul-2012) Discarding device blocks: done Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 9773056 inodes, 39072470 blocks 1953623 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=0 1193 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872   Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done

    
7. Moving the data:
   seiler@cubietruck:~# sudo dd if=/dev/nandb of=/dev/sda1 bs=1024

   1	seiler@cubietruck:~# sudo dd if=/dev/nandb of=/dev/sda1 bs=1024

   Output on command line will look like:
   2048+0 records in 2048+0 records out 2147483648 bytes (2.1 GB) copied, 235.38 s, 9.1 MB/s seiler@cubietruck:~#

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   2048+0 records in 2048+0 records out 2147483648 bytes (2.1 GB) copied, 235.38 s, 9.1 MB/s seiler@cubietruck:~#

   This process took about 4-5 minutes to complete.
8. Finally, you need to edit the  uEnv.txt to boot from the SSD hard drive:
   seiler@cubietruck:~# sudo mount /dev/nanda /mnt/

   1	seiler@cubietruck:~# sudo mount /dev/nanda /mnt/

   seiler@cubietruck:~# sudo nano /mnt/uEnv.txt

   1	seiler@cubietruck:~# sudo nano /mnt/uEnv.txt

   Set the last line to:
   nand_root=/dev/sda1

   1	nand_root=/dev/sda1

   Save (Strg+O) and Exit (Strg+X)
9. Last step: rebooting:
   seiler@cubietruck:~# sudo reboot

   1	seiler@cubietruck:~# sudo reboot

    
   Broadcast message from root@cubietruck (/dev/pts/1) at 19:13 ... The system is going down for reboot NOW!

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   Broadcast message from root@cubietruck (/dev/pts/1) at 19:13 ...   The system is going down for reboot NOW!