Model: ATA C300-MTFDBAK128M (scsi)
Disk /dev/sda: 128GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End    Size   File system  Name  Flags
 1      1049kB  538MB  537MB  fat32              boot
 2      538MB   794MB  256MB  ext2
 3      794MB   128GB  127GB                     lvm



                                                                          
Warning: /dev/sdb contains GPT signatures, indicating that it has a GPT table.
However, it does not have a valid fake msdos partition table, as it should.
Perhaps it was corrupted -- possibly by a program that doesn't understand GPT
partition tables.  Or perhaps you deleted the GPT table, and are now using an
msdos partition table.  Is this a GPT partition table?

                                                                          
Yes/No? no