|chkdsk /r checks the disk for bad sectors and attempts to repair them if possible, although in truth it's impossible to repair bad sectors.|
Any files in bad sectors are almost always corrupted anyway so they are useless. That's why it's so important to keep your files backed up on another drive.
A drive which regularly has bad sectors on it is nearing the end of it's life and should be replaced. If you fail to replace it, the number of bad sectors will simply increase until the drive packs up altogether.
Since you aborted the error checking process at the start of Stage 4, it couldn't possibly have created a CHK file anyway.
Next time let it run to completion otherwise there's no point in running it. Keep your data backed up in future so there's no need to worry about losing data.
And don't forget to replace that failing drive ASAP.
message edited by phil22