what app for a chk file
CHK is the Windows file fragment extension that cleaned from the hard disk by ScanDisk or CHKDISK. CHD can be stored in the FOUND folder after a disk scan has been performed. CHK files also can be deleted since the information has been moved somewhere else on the disk. open chk file on Windows: * DIY DataRecovery CHK-Mate * UnCHK * FileCHK. Source(s): http://www.downloadatoz.com/file-extensions/chk-file-extension.html. Rex Â· 7 years ago.