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SATA disk is Not Detecting While Linux bootup

Did you experience below kind of error anytime with SATA disk,

PCI: enabling device 0000:00:01.0 (0140 -> 0143)
ata1: SATA max UDMA/100 cmd 0xC2852080 ctl 0xC285208A bmdma 0xC2852000 irq 22
ata2: SATA max UDMA/100 cmd 0xC28520C0 ctl 0xC28520CA bmdma 0xC2852008 irq 22
ata1 is slow to respond, please be patient

after waiting you get
ata1: no device found (phy stat 00000000)
scsi0 : sata_sil

and at last
ata2 failed to respond (30 secs)

And you know how simple answer is for this.
Yes only thing is knowing is the key.

The answer lies in power source connector; SATA disks are very sensitive to power source, so if you see such errors coming while bootup and your SATA disk is not getting detected then press the power connector, And your are saved. This is my experience after struggling for an hour with changing SATA disk and changing SMPS, changing target board, but nothing worked; finally press hold on power connector to SATA disk and done. bbuuuurrr..

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