You may have problems with your video files, but I don’t think it’s because of CHKDSK. Without any options selected, the CHKDSK utility simply reports the current status of your hard drive.
But there are a couple of interesting things about CHKDSK that I think are worth reviewing here.
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What CHKDSK does
All that CHKDSK does is make sure that the directory or the listing of files on the disk refers to the correct files. In other words, CHKDSK verifies that all of the pieces are there, the data is structured properly, and that everything that Windows needs to maintain that file system is in its proper order.
When CHKDSK discovers that one of these things isn’t right, it reports that as an error.
What CHKDSK does NOT do
The fact that your system froze is interesting, but it’s not uncommon. The freeze is usually because CHKDSK could not recover from an error that it found in the file system. In other words, if CHKDSK freezes, your computer’s hard disk may have a problem.
Before we go any further, I need to be clear: the problem was already there before you ran CHKDSK. All that CHKDSK did was report (or in this case, hang as a result of) an error on the hard disk. In other words, it didn’t mess up your video files.
Something was already wrong with them.
CHKDSK will attempt to repair things if you:
- Specify the /R or /F options when you are running CHKDSK from the command line
- Select the “Fix” or “Repair” options when you select it from the GUI
But again, CHKDSK is only trying to repair damage that has already been done. CHKDSK will force the file system to be in a correct and coherent state, and that may result in errors becoming visible in different ways, but this is only only as a result of whatever damage had already occurred.
Where are the errors coming from
File system errors can come from any number of different places. The more common reasons for this are not shutting down Windows properly, experiencing a crash, or having the power removed while the system is running. It’s also possible that the hard disk could be in the process of failing.
The reality is errors happen. Hard disks fail. It’s the way computers work.
The only real way to prevent this from being a serious issue is to back up regularly so that if (or rather, when) something happens to your files (whether they’re video files, data files, or even the files that comprise Windows itself), you’re protected. You have backup copies and you can restore them to the replacement hard drive, the fixed software, or whatever.
But whatever you do, don’t blame file problems on CHKDSK. It’s just trying to help.