I tried to upgrade my ESXi 5.5 hosts to 6.0U2 using a USB drive and 2/6 of the hosts failed with "Directory Not Empty" and referenced $RECYCLE.BIN.
I then rebooted the hosts into the USB and tried again but the second time around; it no longer says Upgrade, it wants to wipe out and reinstall from scratch...
I went through each storage and ESXi wasn't found on any of them... I rebooted without the USB and it seems to boot to ESXi 5.5 just fine.
I am wondering where to go from here; I dont feel comfortable reinstalling EXSi because we have a mix of VMs on Datastore & iSCSI LUNs, I can't risk losing these VMs and trying to reimport critical VMs is troubling.
Is there another way to upgrade these hosts?
