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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Try this first..<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><ol start=1 type=1><li class=MsoNormal style='color:black;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1'><span lang=EN style='font-size:10.5pt;font-family:"Arial","sans-serif"'>Boot from CentOS installation disc (for example, CD #1 or DVD). <o:p></o:p></span></li><li class=MsoNormal style='color:black;margin-top:3.0pt;margin-bottom:3.0pt;mso-list:l0 level1 lfo1'><span lang=EN style='font-size:10.5pt;font-family:"Arial","sans-serif"'>For CentOS-4 or CentOS-5 type "<b>linux rescue</b>" at the "<b>boot:</b>" prompt. For CentOS-6 pick "Rescue installed system" from the boot menu. <o:p></o:p></span></li><li class=MsoNormal style='color:black;margin-top:6.0pt;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1'><span lang=EN style='font-size:10.5pt;font-family:"Arial","sans-serif"'>Mount all filesystems in read-write mode. <o:p></o:p></span></li><li class=MsoNormal style='color:black;margin-top:3.0pt;margin-bottom:3.0pt;mso-list:l0 level1 lfo1'><span lang=EN style='font-size:10.5pt;font-family:"Arial","sans-serif"'>Change root to real root ('/') on your hard disk:<o:p></o:p></span></li></ol><div style='mso-element:para-border-div;border:dashed #797979 1.0pt;padding:6.0pt 12.0pt 6.0pt 12.0pt;background:#F3F3F3;margin-left:.25in;margin-right:0in'><p class=MsoNormal style='mso-margin-top-alt:6.0pt;margin-right:0in;margin-bottom:6.0pt;margin-left:.25in;text-indent:-.25in;mso-list:l0 level1 lfo1;background:#F3F3F3;border:none;padding:0in'><![if !supportLists]><span lang=EN style='font-size:10.0pt;font-family:"DejaVu Sans Mono";color:black'><span style='mso-list:Ignore'>5.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN style='font-size:10.0pt;font-family:"DejaVu Sans Mono";color:black'># chroot /mnt/sysimage<o:p></o:p></span></p></div><ol style='margin-top:0in' start=6 type=1><li class=MsoNormal style='color:black;margin-top:6.0pt;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1'><span lang=EN style='font-size:10.5pt;font-family:"Arial","sans-serif"'>Re-install bootstrap code (GRUB). <o:p></o:p></span></li><ul style='margin-top:0in' type=circle><li class=MsoNormal style='color:black;margin-top:3.0pt;margin-bottom:3.0pt;mso-list:l0 level2 lfo1'><span lang=EN style='font-size:10.5pt;font-family:"Arial","sans-serif"'>If you wish to re-install GRUB to the MBR on a SCSI or SATA disk (/dev/sda):<o:p></o:p></span></li></ul></ol><div style='mso-element:para-border-div;border:dashed #797979 1.0pt;padding:6.0pt 12.0pt 6.0pt 12.0pt;background:#F3F3F3;margin-left:.75in;margin-right:0in'><p class=MsoNormal style='mso-margin-top-alt:6.0pt;margin-right:0in;margin-bottom:6.0pt;margin-left:.25in;text-indent:-.25in;mso-list:l0 level2 lfo1;background:#F3F3F3;border:none;padding:0in'><![if !supportLists]><span lang=EN style='font-size:10.0pt;font-family:"Courier New";color:black'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN style='font-size:10.0pt;font-family:"DejaVu Sans Mono";color:black'># grub-install /dev/sda<o:p></o:p></span></p></div><ol style='margin-top:0in' start=6 type=1><ul style='margin-top:0in' type=circle><li class=MsoNormal style='color:black;margin-top:3.0pt;margin-bottom:3.0pt;mso-list:l0 level2 lfo1'><span lang=EN style='font-size:10.5pt;font-family:"Arial","sans-serif"'>If you wish to re-install GRUB to the PBR of Partition #2 on a SCSI or SATA disk (/dev/sda2):<o:p></o:p></span></li></ul></ol><div style='mso-element:para-border-div;border:dashed #797979 1.0pt;padding:6.0pt 12.0pt 6.0pt 12.0pt;background:#F3F3F3;margin-left:.75in;margin-right:0in'><p class=MsoNormal style='mso-margin-top-alt:6.0pt;margin-right:0in;margin-bottom:6.0pt;margin-left:.25in;text-indent:-.25in;mso-list:l0 level2 lfo1;background:#F3F3F3;border:none;padding:0in'><![if !supportLists]><span lang=EN style='font-size:10.0pt;font-family:"Courier New";color:black'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN style='font-size:10.0pt;font-family:"DejaVu Sans Mono";color:black'># grub-install /dev/sda2<o:p></o:p></span></p></div><ol style='margin-top:0in' start=6 type=1><ul style='margin-top:0in' type=circle><li class=MsoNormal style='color:black;margin-top:3.0pt;margin-bottom:3.0pt;mso-list:l0 level2 lfo1'><span lang=EN style='font-size:10.5pt;font-family:"Arial","sans-serif"'>If you wish to re-install GRUB to the MBR on an IDE disk (/dev/hda):<o:p></o:p></span></li></ul></ol><div style='mso-element:para-border-div;border:dashed #797979 1.0pt;padding:6.0pt 12.0pt 6.0pt 12.0pt;background:#F3F3F3;margin-left:.75in;margin-right:0in'><p class=MsoNormal style='mso-margin-top-alt:6.0pt;margin-right:0in;margin-bottom:6.0pt;margin-left:.25in;text-indent:-.25in;mso-list:l0 level2 lfo1;background:#F3F3F3;border:none;padding:0in'><![if !supportLists]><span lang=EN style='font-size:10.0pt;font-family:"Courier New";color:black'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN style='font-size:10.0pt;font-family:"DejaVu Sans Mono";color:black'># grub-install /dev/hda<o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> app_rpt-users-bounces@ohnosec.org [mailto:app_rpt-users-bounces@ohnosec.org] <b>On Behalf Of </b>John (WB5NFC)<br><b>Sent:</b> Friday, February 03, 2012 11:21 AM<br><b>To:</b> app_rpt list<br><b>Subject:</b> [App_rpt-users] ACID Boot Error Help Request<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal style='background:white'><span style='color:black'>My trusty Acid server bit the dust last week. This is full-size Dell with plenty of horsepower and a quad radio interface, not my BeagleBoard.<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>The computer goes through POST with no errors reported, then:<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>grub loading stage 2<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>GNU grub V0.97<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>[Minimal BASH-like line editing supported. <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>I think this happened after a brief power outage, but I'm not sure. Just just noticed the nodes were down and then found a computer that would not reboot. <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>Suggestions for troubleshooting, please?<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>John / WB5NFC<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'><o:p> </o:p></span></p></div></div></div></body></html>