Thanks. I need the 4tb for backups. Also going to try Hyper-v or Virtual Box on this server so the more storage the better. I can't see a way round this at the moment, would've thought somebody has figured out a way to do this... Thanks Charles     
Hi  My T105 has 2x2tb drives with a single raid0 3.8tb virtual drive. Disk Manager has greyed out the "New Simple volume". I can only use the first 2tb of the virtual drive which I am presuming is because it is MBR and not GPT.  F10 on boot tells me the utility partition is not present (do I need this? How do I put it back?)Diskpart "convert GPR" says it cannot run on a disk with a pagefile. I can't find the option for UEFI boot on this so not sure if it is supported. Bios version is 1.4.4. I've just downloaded Gptgen from sourceforge but looking for another solution before trying this.Aomei is a chargeable option but in all likelihood I will only ever need it once. Is there a non-destructive fix for this, not too bothered about reinstalling server 2012r2 if not. Thanks Graham
T105 convert MBR to GPT 2TB limit on virtual disk.