I've been having a problem with an ESXi box, I can't a 500GB hard drive to attach to a datastore.
When trying to add a 500gb drive to a new or existing datastore I get this error message.
"Error during the configuration of the host: Failed to get disk partition information".
I have used BackTrack to fdisk the drive and mark it as bootable also wrote an ext3 filesystem to the drive. I have tested the drive with SeaTools and it passes.
This problem really has me stumped because every other box I attach it to I can access and use the drive (disclaimer: I do not have another ESXi box to try this with).