Open the command prompt as Administrator (if you try to run the command below as a regular user, you will get an error Access denied). In W7 and earlier, the command prompt should open with administrator rights if you have an administrator account, but in W8 this is no longer the case: you have to search for it in Start, right-click it and choose Run as Administrator from the AppBar. The command that shows the details of your disk looks like this:
fsutil fsinfo ntfsinfo C:
where C is the drive letter. The program will also give you other information about your partition (full output in W8):
- NTFS Volume Serial Number :
0xd2562a60562a4597 - NTFS Version :
3.1 - LFS Version :
2.0 - Number Sectors :
0x000000000a003fff - Total Clusters :
0x00000000014007ff - Free Clusters :
0x00000000004d5bea - Total Reserved :
0x0000000000000780 - Bytes Per Sector :
512 - Bytes Per Physical Sector :
512 - Bytes Per Cluster :
4096 - Bytes Per FileRecord Segment :
1024 - Clusters Per FileRecord Segment :
0 - Mft Valid Data Length :
0x0000000011cc0000 - Mft Start Lcn :
0x00000000000c0000 - Mft2 Start Lcn :
0x0000000000000002 - Mft Zone Start :
0x0000000000c5b7e0 - Mft Zone End :
0x0000000000c67f80 - Resource Manager Identifier :
9EAC637C-AB02-11E2-949B-C04326FAE833
I hope this helps someone :).