Les wrote: > It has been decades since I looked at the disk structure. I am > curious about the current "state of the art". Can you recommend some > (heavy?) reading? That's odd -- the PC partition structure is a couple of decades old. You're probably up to date. As far as I can see, http://en.wikipedia.org/wiki/Master_Boot_Record and http://en.wikipedia.org/wiki/GUID_Partition_Table are accurate. GPT is not yet used except on high end servers and Intel-based Apple Macs -- since the existing PC partition structure has a hard disk size limit of 2 TB, this will have to change soon. (Yes, that also means it can't support RAID arrays with more usable space than 2 TB). Hope this helps, James. -- E-mail: james@ | I must refute the rumour that one of our team members aprilcottage.co.uk | walks on water. Although it's true that Barry Cryer runs | on lager... | -- "I'm Sorry, I Haven't A Clue", BBC Radio 4