Disk Sector Relocation Exhausted – Fixes That Work

You're working along and suddenly Windows pops up with a warning: "Disk Sector Relocation Exhausted." Or your computer just freezes, you get a blue screen, or files won't open. You run a quick check with CrystalDiskInfo and see the Reallocated_Sector_Count is in the red, or the Current_Pending_Sector count is climbing.

This usually happens on older drives, or drives that have taken a few knocks – laptops dropped, desktops bumped, or just years of everyday use. I've seen it most often on WD Blues and Seagate Barracudas after 3-4 years of heavy duty.

What's Actually Going On?

Every hard drive has a hidden reserve of spare sectors. When the drive finds a physical bad spot on a platter, it remaps that sector to a spare one. That's the relocation part. The drive quietly swaps them out, and you never notice – until the spare pool runs dry.

Once all the spares are used up, every new bad sector becomes a pending sector. The drive can't hide it anymore. The OS sees the error, tries to read the sector, fails, and eventually marks it as bad. That's when data gets corrupted or lost.

There's no software fix for this. You can't remap sectors that don't exist. The drive is physically worn out.

What You Should Do Right Now

The one and only real fix is to replace the drive. Anything else is a delay, not a cure. But you need to do it carefully so you don't lose your data.

Step 1 – Back Up Everything You Can

This is priority one. As soon as you see that warning, stop using the drive for anything except backup. Grab an external USB drive (or another internal one if you have room) and copy your files.

Open File Explorer and browse to your user folders (Documents, Pictures, Desktop, Downloads).
Select everything, right-click, and choose Copy. Paste it into a folder on your backup drive.
If a file won't copy because of a bad sector, don't panic. Use a tool like TeraCopy or Robocopy from the command line. They skip over bad sectors and keep going. For example, open Command Prompt as admin and run:
```
robocopy C:\Users\YourName D:\Backup /E /R:3 /W:5 /COPY:DAT
```
This copies everything, retries up to 3 times per file, waits 5 seconds between retries. If a file fails, it moves on.
After copying, verify the files on the backup drive open correctly. Double-check critical ones like photos, documents, and spreadsheets.

If the drive is so bad that Windows won't boot or the disk is clicking, you might need to boot from a Linux live USB (like Ubuntu) and copy files from there. Linux often handles bad sectors better than Windows.

Step 2 – Confirm the Drive's Health

Backup done? Good. Now let's be sure it's really the drive and not a controller or cable issue. Download and run CrystalDiskInfo (free, portable version). Look at these SMART attributes:

Reallocated_Sector_Count – should be 0. If it's over 100, the drive is dying.
Current_Pending_Sector – should be 0. Any non-zero means sectors are waiting to be remapped (but can't be, because spares are exhausted).
Raw_Read_Error_Rate – high numbers here indicate physical damage.

If any of those are in the yellow or red, the drive's toast. Don't try to repair it. Don't run chkdsk /r – that will hammer the drive and could trash it completely.

Step 3 – Get a New Drive

Go buy a replacement. For a desktop, an SSD is the best upgrade you can make. A 1TB SATA SSD runs about $50-60 as of 2025. For a laptop, same thing – make sure it's the right form factor (2.5-inch SATA or M.2 NVMe). If you need bulk storage and cost is a concern, a 2TB hard drive is fine for secondary data, but don't install your OS on it.

Step 4 – Clone or Reinstall

Two paths here:

Clone the old drive – If the old drive still responds, use cloning software (Macrium Reflect Free, Clonezilla) to copy everything to the new drive. This preserves Windows and all software. But if the old drive has bad sectors, cloning might fail or create corrupt files. I don't recommend cloning a dying drive with reallocated sectors. You'll just bring the problems with you.
Fresh install – This is safer. Install Windows from scratch on the new drive, then copy your backed-up files over. You'll need your Windows license key (check it with ProduKey before the old drive dies completely).

Step 5 – Install the New Drive and Migrate

Shut down the PC, unplug the power cord, and open the case.
Disconnect the old drive's SATA cable and power cable. Set it aside – don't throw it away until you're sure you have everything.
Connect the new drive with the same cables. Screw it into the drive bay.
Boot from a Windows installation USB. Install Windows onto the new drive.
After Windows is running, connect your backup drive and copy your files back. Install your software fresh.

Once you're certain everything is working, you can destroy the old drive (physically break it or use a degausser) to prevent anyone from recovering your data.

If the Fix Didn't Work – What to Check

If you've replaced the drive and still see disk errors:

Check the SATA cable – A bad cable can cause intermittent disconnects and make Windows think the drive is failing. Replace it with a new one. I've seen this fool people for weeks.
Check the power supply – A failing PSU can cause voltage drops that make drives act weird. If you have a multimeter, test the 5V and 12V rails. Or swap in a known-good PSU.
Check the motherboard SATA port – Plug the drive into a different SATA port. If the problem follows the port, the motherboard might be faulty.
If it's an external USB drive – The enclosure's controller could be failing. Try removing the drive from the enclosure and connecting it directly via SATA.

But honestly, nine times out of ten, it's the drive itself. Don't waste time trying to revive it. Replace it, restore your data, and move on. Your time is worth more than that drive.