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Message: [QUOTE="George_222, post: 12532067"] Occasionally, and it is only once every 1 to 2 months or so, I get in 'EventLog-System' some 'ftdisk event 57'. This basically says do a chkdsk. If I run a chkdsk I sometimes (not always) get errors fixed like: Recovering orphaned file 'opr01h65 (187185) into directory file '32379' and Recovering orphaned file 'opr01h5w (187182) into directory file '33825' Q1 What do these mean? Where are the 'opr01xx' files from, and where is the 3xxxx directory files that they appear to have been recovered into? If I run chkdsk /f it claims to fix everything, and all is well again, until the next time. Q2 Whats likely to be causing them, how do I locate the actual problem? Finally, if I run chkdsk without the /f on c: it seems to have the following warning: CHKDSK discovered free space marked as allocated in the master file table (MFT) bitmap. Correcting errors in the Volume Bitmap. Windows found problems with the file system. Run CHKDSK with the /F (fix) option to correct these. This does not happen on D: or E:. Q3 Is this normal for C: following a chkdsk without the /f, or is this indicative of the possible error? Thanks PS Things Ive tried: * An updated AV and spyware check finds nothing - all OK. * SCANDISK finds nothing - all OK (just reports "disk check complete") * I cannot find anything that appears to not be working correctly; the PC basically seems to function OK apart from these problems. * The PC has one physical HD split as C: D: and E:. D: and E: when checked are always fine, if there are any fixed errors they are always found on C: * Everything, the complete system, is backed up once a month, just in case. [/QUOTE]

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