How to repair hd errors by an fsck type command?

[LincolnAbe]

I have some moderately severe HD errors in my 2TB LS-CHL LinkStation, which stops some files from being read. The red error lamp flashes (as I can see) two long and a short, which as I've understood means hd error & back up data & replace unit.

Before buying a new NAS device I would like to do fsck (scandisk/chkdsk) repair from my MacOSX to mark sectors that are bad on the hd. I've tried using the web based config panel at 192.168.1.2 at System > Storage > Check Disk. The problem is, every time the check tilts and stops after a few minutes when the browser gives the error message: "Failed to operate disk. Please resubmit after restart".

After logging in again and restarting the unit, the blue solid LED are on, but only until the next time I happen to read a corrupted file, when red LED starts flashing again. Thus, whatever the Check Disk function does, it's not fixing the problem.

I would like to try to repair the hd by using a terminal type command, such as fsck from my MacOSX. Is there a possibility and how do you do this?

[Eastmarch]

The Linux filesystem does this automagically. If it isn't readable now, then the file is likely lost, short of professional data recovery.

We have a relationship with DriveSavers that involves a discount, and they will do a completely free assessment, including all shipping if the files are not backed up or recreatable.

DriveSavers