You can use any size you want, the limit's are OS related. Sounds like your confusion could be the actual formatting for Standard or Extended ! Use Extended if you have 9.0 or higher, standard if you have 8.0 - 8.5...... OS older than 8.0 have a size limit. Brandy andy at andynic.eclipse.co.uk wrote: >This posting just reminded me that I meant to ask you, the experts:- >What is the situation with upgrading hard drives on the 2400c? Is there a >4GB limit on disc size? is there some relationship between this and the >SCSI/IDE interface/conflict. > >Thanks, > >Andy > >