Cannot install Grub2

[Артём Алексюк]

Hello.
I'm using Grub1.99 (pc version, Archlinux) and there are some problems with 
it. I used testdisk some time ago, maybe it's a reason of this problem.
Grub0.x and Windows's loader are working OK.

$ sudo grub-install /dev/sda
/usr/sbin/grub-setup: error: hostdisk//dev/sda appears to contain a udf 
filesystem which isn't known to reserve space for DOS-style boot. Installing 
GRUB there could result in FILESYSTEM DESTRUCTION if valuable data is 
overwritten by grub-setup (--skip-fs-probe disables this check, use at your 
own risk).

$ sudo grub-setup --skip-fs-probe /dev/sda
grub-setup: warn: Attempting to install GRUB to a disk with multiple partition 
labels or both partition label and filesystem. This is not supported yet..
grub-setup: warn: Embedding is not possible. GRUB can only be installed in 
this setup by using blocklists. However, blocklists are UNRELIABLE and their 
use is discouraged..
grub-setup: error: will not proceed with blocklists.

$ sudo fdisk -l /dev/sda

Disk /dev/sda: 400.1 GB, 400088457216 bytes
255 heads, 63 sectors/track, 48641 cylinders, total 781422768 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: 0x05f2265b

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 42088447 21043200 83 Linux
/dev/sda2 42090300 72144895 15027298 83 Linux
/dev/sda3 73593765 716466869 321436552+ f W95 Ext'd (LBA)
/dev/sda4 716466870 781417654 32475392+ 7 HPFS/NTFS/exFAT
/dev/sda5 77979573 226821734 74421081 7 HPFS/NTFS/exFAT
/dev/sda6 226821798 232628223 2903213 82 Linux swap / Solaris
/dev/sda7 233119278 716466869 241673796 83 Linux