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..

Comments

Xilinx's Interview Questions

Xilinx is the world's one of largest supplier of programmable logic devices. It has started R & D department in Hyderabad, India. It has broad scope for embedded system programming in device driver in linux.

Before the interview you have to feel the Xilinx form with information containing all academic details, current/previous employer, contacts of employer( to check out info about you), current ctc, expected ctc and expected date of joining, etc.

I appeared two back to back technical interviews.

The first interview was taken by a young man look like just crossed 30's.

He asked me to tell me about myself.

Then he asked my experience.

He checked my expertise in resume.

He asked questions about RTOS, and Linux Device Drivers.
What is RTOS ? Define it.
How a linux device driver works?
How a character driver works?

He looked at my project summaries and started to ask in depth questions about each project.

After that he asked me to write to delete nth node from starting in Singly Linked Li…

Rajasthan Board 10th Results | rajedubord.nic.in | RBSE

Raj Board of Secondary Education, Rajasthan Results at rajeduboard.nic.inBoard of Secondary Education, Rajasthan Ajmer declared result of secondary examination today at 4PM official site is rajedubord.nic.in

check Secondary Examination- 2008 Result
(To be announced on July 1st, 2008 at 4:00 PM)
source
http://rajresults.nic.in/

Declared result
Praveshika Examination-2008 Result
(Announced on June 25, 2008 at 4:00 PM)

The history of the Board of Secondary Education Rajasthan (BSER) is a remarkable panorama of progressive record of the futurological vision for developing a dynamic system of various sub-systems of examinations and highlights of the academic excellence of the last four decades. The BSER took rapid strides for promotion and development of Secondary Education in Rajasthan, spread over 3,42,239 sq. km. and in more than 6000 schools located in 32 districts involving 8.5 lakhs students for Secondary and Senior Secondary Examination in the year 2000.

At present the Board is conducting …

Delete Last Char in String C program Simple Way

How to delete the last character in a string?
Lets say I have a string "/data/share/" I want to delete the last character from the string ie "/" so that output will be "/data/share"; Here are some methods to do this in C language.
one way could be use of strncat() function;
char*strncat(char*restricts1, constchar*restricts2, size_tn);
The strncat() function appends not more than n characters from s2, and
then adds a terminating `\0'.
#include
Another simple way is,
say the string variable is str_p
Then simply put
str_p[(strlen(str_p)-1)] = '\0';
And you are done;

My Tech notes

Search This Blog