About the author:

Forum-name: continuum-icon continuum

Active member of the german VMware forum since 2002. Status:  rank 1 withmore than  14.000 posts
Active member of VMTN since 2003. Status: rank 5 with more than 26.000 posts


Experience with VMware since 2002
Site: www.sanbarrow.com 2003
First LiveCD that could run VMware Workstation published 2004 – based on BartPE
First MOA-LiveCD published 2005
Construction-kit for a Coldclone LiveCD published 2005 – based on BartPE
First builds of a LiveCD optimized for  remote support of vSphere-environments 2008
First vExpert Award 2009
Turn the hobby into a profession 2011

Special skills:

– create LiveCDs to run VMware applications
– troubleshooting of single virtual machines
– data-extraction from corrupt virtual-disks and snapshots – all VMware platforms
– recovery of virtual disks from corrupt VMFS-datastores
– P2V and V2V in tricky scenarios


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Ulli Hankeln
Am Kreuzberg 15
59955 Winterberg


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  1. Hallo Ulli,

    First of all, than you for you help to newbies vmware users 🙂 i read some of your many posts, i have learnt a lot from you.

    I am in critical situation with old vSphere 5.5 unfortunately support by VMWare ended septembre 2018 therefore the only hope is maybe is you.

    In my company we have 11 VM on single hard disk (no backup) under ESXI 5.5.0 build 1131820

    8 of those 11 VM were up and running but there was power outage. So the esxi was not shutdown properly.

    First i had issues to access vSphere via vcenter (i restarted the agent management services via ssh) but the behaviour of the exsi was not normal, i got on logs randomly hosd non responsive messages every 5 min aprox.

    Then after new reboot i got access again via vcenter (not url as this version is not compatible as you know) but datastore was lost, noypersistent message datastore under storage tab.

    I wrote in the post https://communities.vmware.com/thread/596872?start=15&tstart=0 regardingDatastore not show in the Storage list

    I have the file of VMFS-Header-dump ready, the link is ready on onedrive but in order to share i need your email address.

    It is 1.5Gb compressed 500Mb file, also i created new datastore with spare disk (the exsi is mounted on 410 poweredge)

    Please let me know if there is a chance to save the VMs, there are 4 critical ones that i hope we can rescue.

    my skype id is mdavila@teldat.com.

    Many thanks,

  2. Yaser says:

    Respected Sir,

    I am facing a huge issue with my (3) vMware virtual machines, I accidentally deleted files from Vmware datastore , i was just deleting the unnecessary ISO files.

    Requesting you kindly to help me to find a way to recover only one VM, the rest of Vms, i can rebuild another.

    I am getting the following error:

    Failed to start the virtual machine.
    Module Disk power on failed.
    Cannot open the disk ‘/vmfs/volumes/53dcf557-75fb2a56-2bcf-10604b9d8ba4/Server-4/Server-4.vmdk’ or one of the snapshot disks it depends on.
    The file specified is not a virtual disk

    Thanks and best Regards,
    Yaser M