VMWARE ESXI 4.1 - WINDOWS 2008 R2 UNMOUNTABLE_BOOT_VOLUME BLUE SCREEN

Hello,
I'm having a "UNMOUNTABLE_BOOT_VOLUME" BLUE SCREEN error on my VM, no recovery working while using install cd.
The VM has 3 disks of 256 Go, the second one has ntfs errors, I cannot run a chkdsk on it, the first disk (OS) seems to be OK (while using gparted) but cannot boot

Any help will be appreciated
jamesnioxAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I would run a disk checker from the manufacturer to recertify the drive.

or use an imaging tool with ignore bad sectors flag.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
have you tried connecting the virtual disks to another Windows helper VM to check files, folders and data.

but before running chkdsk, make sure you have full backups not vmware snapshots.
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jamesnioxAuthor Commented:
HI, yes I tried :
- the second disk cannot be accessed, browser or any thing else
, no I have no full backup, some error is fired when I try to make a copy, even in SSH (cp : read error ... )
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jamesnioxAuthor Commented:
I this can help too, I have this error with the GPARTED tool for the corrupted vmdk :
cluster accounting failed
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
okay, it looks like your underlying datastore is having issues.check RAID controller for RAID failure, or local host disks for failure.

your vmdks are corrupted because of hardware storage failure.
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jamesnioxAuthor Commented:
That's what I was thinking, actually they are local SATA disks, and I have no clue of how to check that on esxi.
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jamesnioxAuthor Commented:
I fired a "dosfsck" command, I'm waiting to see the results
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
check the VMware logs, but if they are SATA individual disks, a disk is failing with errors.

login to ESXi console or SSH, /var/log for logs
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Paul SolovyovskySenior IT AdvisorCommented:
Also make sure you have the right disk booting, sometimes they get out of order, make sure bootable is scsi(0:0)
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jamesnioxAuthor Commented:
I have this type of error message  :


Apr  2 00:10:26 vmkernel: 0:11:10:23.965 cpu1:4617)NMP: nmp_CompleteCommandForPath: Command 0x28 (0x41027f358d40) to NMP device "t10.ATA_____SAMSUNG_HD103UJ________
Apr  2 00:10:26 vmkernel: 0:11:10:23.965 cpu1:4617)ScsiDeviceIO: 1688: Command 0x28 to device "t10.ATA_____SAMSUNG_HD103UJ_________________________S13PJ1BZ202358___
Apr  2 00:11:04 vmkernel: 0:11:11:02.064 cpu1:4617)<3>ata3.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Apr  2 00:11:04 vmkernel: 0:11:11:02.064 cpu1:4617)<3>ata3.01: (BMDMA stat 0x40)
Apr  2 00:11:04 vmkernel: 0:11:11:02.064 cpu1:4617)<3>ata3.01: tag 0 cmd 0x25 Emask 0x9 stat 0x51 err 0x40 (media error)
Apr  2 00:11:04 vmkernel: 0:11:11:02.070 cpu1:4617)<6>ata3: EH complete
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
hard drive needs replacing.

the virtual disk are probably corrupted because they cannot be read.
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jamesnioxAuthor Commented:
Too bad !!!

Thanks, is there a way to force copy ignoring read errors so as to recover a part of the data from the vmdk files?

I'm about to try "Ddrescue" embeded in a rescue disk : http://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html#Invoking-Ddrescue to copy data in a mounted vmdk stored in a separate disk (datastore) to the VM I need to recover
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
If the data is really important and you have a BUDGET for DR. STOP

send to Kroll Ontrack.
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jamesnioxAuthor Commented:
Hello,
I finally succeeded to rescue main data, with :

1 - using an imaging tool with ignore bad sectors flag, but on the virtual images : "Ddrescue" embeded in a rescue disk

2 - mounting the virtual disk as slave on another virtual server.

thanks for all your helps.
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