Boot from 4TB USB jhard drive

[Emilio Lazo Zaia]

Hello

I'm trying to boot off an WD MyBook 4TB disk (WDC WD40EZRX-00SPEB0) with 
GRUB2. The disk has the following partition schema:

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GPT fdisk (gdisk) version 1.0.1

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/sdf: 976746240 sectors, 3.6 TiB
Logical sector size: 4096 bytes
Disk identifier (GUID): 117CB10C-C241-460D-AC03-A4F084CFA317
Partition table holds up to 128 entries
First usable sector is 6, last usable sector is 976746234
Partitions will be aligned on 8-sector boundaries
Total free space is 2 sectors (8.0 KiB)

Number  Start (sector)    End (sector)  Size       Code Name
   1               8             255   992.0 KiB   EF02 BIOS boot partition
   2             256       976746234   3.6 TiB     8E00 Linux LVM
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/boot partition is a logical volume within gpt2 partition. Partition 1 
has "legacy boot" flag. Except the 4KB sector size there is nothing strange.

After grub-install the disk boots under kvm with

$ kvm -snapshot -hda /dev/sdf

But in a non virtualized environment it hangs after selecting boot 
device from BIOS boot menu on the laptop (Acer AO722). There is no text, 
only the text cursor.

I've installed lilo and it hangs after "L" and extlinux shows "Multiple 
active partitions" but there is no active partitions on the protective 
MBR and only GPT partition 1 is "legacy boot bootable".

The problem is related to the physical sector size?


Emilio.