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  • Blog Post: Interpreting Event 153 Errors

    Hello my name is Bob Golding and I would like to share with you a new event that you may see in the system event log.  Event ID 153 is an error associated with the storage subsystem. This event was new in Windows 8 and Windows Server 2012 and was added to Windows 7 and Windows Server 2008 R2 starting...
  • Blog Post: What Should Never Happen... Did

    Hi, this is Bob Golding; I wanted to write a blog about an interesting hardware issue I ran into. Hardware problems can be tricky to isolate. I recently came across one that I thought was interesting and gave an example of how to trace code execution.  The machine executed the filler “int 3” instructions...
  • Blog Post: Determining The Interrupt Line For A Particular PCI-E Slot

    Hi debuggers, this is Graham McIntyre again. These days I’m working more closely with hardware so I thought I’d share some hardware related debugging tips.  I recently debugged an issue where a PCI-E storage device failed to work after hot swapping it from one slot to another slot on the system...
  • Blog Post: LUN Discovery in a Nutshell

    The way the disk configuration is determined on a Windows system is by a process called “discovery”.   If the disk configuration is ISCSI or Fibre the process is very similar.   I will describe the process on each and you will see they are very similar.   To simplify things this blog will...
  • Blog Post: NTFS And 4K Disks

    Since the 1960’s, hard disks have always used a block size of 512 bytes for the default read/write block size. Recently drive manufacturers have been moving toward a larger block size to improve performance and reliability. Currently there are two types of disks available with a 4KB sector size...
  • Blog Post: Understanding Storage Timeouts and Event 129 Errors

    Greetings fellow debuggers, today I will be blogging about Event ID 129 messages.   These warning events are logged to the system event log with the storage adapter (HBA) driver’s name as the source.   Windows’ STORPORT.SYS driver logs this message when it detects that a request has timed out...
  • Blog Post: Interpreting a WHEA error for a MCA fault

    Howdy fellow debuggers! This is Graham McIntyre, I am an Escalation Engineer in Platforms Global Escalation Services.   We get questions from time to time from customers who experience a WHEA bugcheck 0x124, or system event, for help in interpreting the error record. The information applies to Windows...
  • Blog Post: Hardware bitflipping

    Hello all; my name is Scott Olson and I work as an Escalation Engineer for Microsoft Global Escalation Services team in Platforms support, and I wanted to share an interesting problem that came up recently. A co-worker was running Windows Vista Ultimate x64 on their home machine and ran into a problem...
  • Blog Post: Debugging a bluescreen at home

    Hi, my name is Chad. I work as an escalation engineer for Microsoft’s OEM support team. A while back, I encountered an interesting crash on one of my computers at home, and I thought I’d post about how I debugged it. This particular machine had been humming along quite happily for some time...
  • Blog Post: Where the rubber meets the road, or in this case the hardware meets the probe.

    Hi my name is Bob, I’m an Escalation engineer with the Microsoft critical problem resolution team. We had one of our readers ask how much we deal with hardware. Well in response we recently worked on an interesting problem I thought I would share with you. In this case it was interesting because it demonstrated...
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