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ESXi 5.1 Host not booting.

Last night, our ESXi host suddenly crashed. Vsphere stopped responding and the host went down. When I restarted the physical server, it came back up saying that "The system found a problem with your machine and can't continue. Unable to load multiboot modules: Bad Parameter" I need to get this system back up as soon as possible, so I'm thinking of reinstalling the host, or upgrading to ESXi 5.5. Will this help? Is anyone familiar with this issue?
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Jake Davis
Asked:
Jake Davis
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1 Solution
 
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
A few options to try...

can you boot it in Recovery Mode, e.g. select Shift R, in the first 4 seconds of BOOT.

otherwise, you will need to re-install the OS, on re-installing, it should detect the existing VMFS datastore, which contains the VMs, select YES to PRESERVE, and continue the installation.

Check your server is on the HCL before 5.5. Also, vCenter Server also needs to be at 5.5, to support 5.5 hosts!

If you are using HP, IBM, DELL servers etc make sure you download OEM vendor version from their website!
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Jake DavisDirector, IT ServicesAuthor Commented:
Okay, got it. It seems to have preserved some but not all of my VM's. Also, one of the VM's I'm recovering seems to have an issue powering on...any ideas?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I'm recovering seems to have an issue powering on...any ideas?

lots of ideas, error messages, screenshots may help me!
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Jake DavisDirector, IT ServicesAuthor Commented:
Okay, well, our Domain Controller is a virtual machine. Now that I've reloaded the ESXi host, because it stopped booting, I have been able to import the domain controller into the VM inventory, but it will not power on.
VsphereError.PNG
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
at first glance, that could be a corrupt VMX or Virtual Disk.

can you upload a screenshot of the folder with the VM.

Also I would try creating a new VM, and add the virtual disk to it, and try that, power on.
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Jake DavisDirector, IT ServicesAuthor Commented:
I'll certainly try that. I hope the disks aren't corrupt, but their size kind of disturbs me. Let me know if this looks off to you.
VMdirectory.PNG
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Is this a thin disk, because it does not look correct ?
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Jake DavisDirector, IT ServicesAuthor Commented:
I think it might be a thin disk, but I am not sure. Right now I am in the process of backing up the server so that I can experiment with it. When I was trying to download the .vmdk file from the datastore to my PC, it was taking hours, then it would totally fail. I'm pretty sure I have a RAID issue, which might have caused the initial failure of the ESXi.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
and if there is RAID, datastore issues, this would be the result of a crash, and virtual disk issues and corruption.
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Jake DavisDirector, IT ServicesAuthor Commented:
at this point in the game I'm wondering what the likelihood is of data recovery.
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compdigit44Commented:
Do you have any VM backups?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Data Recovery is often costly, if you need to resort to it, especially if you think you have some hardware RAID issue.
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compdigit44Commented:
Have you run a hardware check on your server to see if their are hardware issues?
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Jake DavisDirector, IT ServicesAuthor Commented:
Well, right now I am trying to get the .vmdk files migrated to another source so that I can rebuild everything from scratch. Does anyone know a good tool to correct an input/output error when trying to move or access a vmdk file? Or a good method of repairing disk issues on VMFS volumes?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
if the bits on the disk are corrupted, e.g. ,marked bad, there will be a hole in the VMDK, and it will be corrupted.
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Jake DavisDirector, IT ServicesAuthor Commented:
This is an accurate solution and would have worked fine if not for data corruption.
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