ata4 SATA link up 3.0 Gbps SStatus 123… 

ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300) 
ata4.00: ATA-7: SAMSUNG HD080HJ, WT100-41, max UDMA7 
ata4.00: 156301488 sectors, multi 16: LBA48 NCQ (depth 0/32) 
ata4.00: configured for UDMA/133

If you get errors like this while booting into linux, then dont panic. Tighten up your SATA cables and this error disappears. As a thumb rule, dont forget to keep some spare SATA cables handy..