text: i have a notebook,harddisk is 30gb,but now it appears only 20gb-one partition is hided,help me to recover it? i change my partition from fat32 into ntfs, but while changing i get a mistake that change into other, so it disappears, when i recover it, always getting information is recovering fail.could you show me the way to recover it, you dont mention what os you are using. assumed that you use windows xp. when the partition is not created i won't appears when you try to view it in windows explorer. however you can see all your disk space or partition in computer management. jut run this command below  compmgmt.msc /s  - then computer management window will appears - select disk management, from there you can manage your entire hardisk