[Snuffy]

The Data partition is where your ACER Restore is located...so unless you have the Disks from ACER for a Original Restore from ACER...or your own Vista DVD (Acer sent me the required DISK(s) for Factory Install)... then I'd simply shrink the DATA partition down.(.PS: hint - use view to show all hidden files.... and WOW wonder what is in D:\DATA...)... to a smaller size, then increase the C:\ up... I mainly use the Data partition for all my DOWNLOADS, and keep all my emails there... so incase you have to RESTORE via EManager, you have all your DL's and all your EMails.."Vista's Disk Manager" is very good at that....