Moving system from current old MBR HDD to new GPT HDD

[Warpme]

Hi *
I'm trying to understand where I do mistake...
I want to migrate my ArchLinux (3.3.8 kernel) running on MBR partitioned 
HDD to new GPT HDD.
I'm using grub 2.00

What I do:
1.using gdisk I create GTP partitions on my new HDD like following:

gdisk /dev/sdb

GPT fdisk (gdisk) version 0.8.4

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.

Command (? for help): p
Disk /dev/sdb: 20971520 sectors, 10.0 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): B76025A4-B90F-4781-8754-0B0EBF699230
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 20971486
Partitions will be aligned on 8-sector boundaries
Total free space is 6 sectors (3.0 KiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1              40          409639   200.0 MiB   EF02  BIOS boot 
partition
   2          409640         9625639   4.4 GiB     8300  Linux filesystem
   3         9625640        18841639   4.4 GiB     8300  Linux filesystem
   4        18841640        20971486   1.0 GiB     8300  Linux filesystem

2. Make ext3 volume on 2nd partition on new HDD

3. Mount 2nd part and rsync current OS to this new volume

4. Install grub on new HDD
grub-install /dev/sdb

5. Adjust /etc/default/grub for suitable kernel boot parameters, etc.
 -changed "GRUB_CMDLINE_LINUX="vga=0x305 console=tty1 init=/bin/systemd"
 -uncomment "GRUB_DISABLE_LINUX_UUID=true"

6. Make grub.cfg
grub-mkconfig -o /boot/grub/grub.cfg

7. Inspect new grub.cfg for any UUID references. There is no any 
reference to UUID.

New, when I'm trying to boot OS from new HDD I'm receiving following error:

Welcome to GRUB!
error: no such device <UUID of old HDD boot partition>
Entering rescue mode

I make sure new grub.cfg hasn't any entries with old boot part UUID 
(ff6d81f8-e6ab-4d80-92b5-df70748629e1).
Only place on new HDD where I see it is /boot/grub/i386-pc/load.cfg

search.fs_uuid ff6d81f8-e6ab-4d80-92b5-df70748629e1 root hd0,msdos1
set prefix=($root)/boot/grub

Where is error in above procedure ?

BTW: I also tried to use grub install cmd line form Arch wiki
grub-install --target=i386-pc --recheck --debug /dev/sdb

Issue is the same :-(

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