Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Windows\system32>sfc /scannow Beginning system scan. This process will take some time. Beginning verification phase of system scan. Verification 100% complete. Windows Resource Protection did not find any integrity violations. C:\Windows\system32>chkdsk c: The type of the file system is NTFS. Volume label is WINDOWS. WARNING! F parameter not specified. Running CHKDSK in read-only mode. CHKDSK is verifying files (stage 1 of 3)... 286464 file records processed. File verification completed. 5327 large file records processed. 0 bad file records processed. 0 EA records processed. 63 reparse records processed. CHKDSK is verifying indexes (stage 2 of 3)... 370844 index entries processed. Index verification completed. 0 unindexed files scanned. 0 unindexed files recovered. CHKDSK is verifying security descriptors (stage 3 of 3)... 286464 file SDs/SIDs processed. Security descriptor verification completed. 42191 data files processed. CHKDSK is verifying Usn Journal... 40281256 USN bytes processed. Usn Journal verification completed. The master file table's (MFT) BITMAP attribute is incorrect. The Volume Bitmap is incorrect. Windows found problems with the file system. Run CHKDSK with the /F (fix) option to correct these. 243627007 KB total disk space. 144506376 KB in 188432 files. 139988 KB in 42192 indexes. 0 KB in bad sectors. 403199 KB in use by the system. 65536 KB occupied by the log file. 98577444 KB available on disk. 4096 bytes in each allocation unit. 60906751 total allocation units on disk. 24644361 allocation units available on disk. C:\Windows\system32>