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Drive Letter Not Sticking

S

ShadowValentine

Member
I'm using three Western Digital Greens at the moment, two WDC WD20EARX-00PASB0s and one WDC WD20EARS-00MVWB0. I have no issues with the EARXs, but my EARS is un-assigning its drive letter after every reboot. Any ideas what might be causing this, and any possible fix?
 
If you give another drive a drive letter manually, does that stick?

I wonder if the drive's signature is somehow a problem. Can it be upgraded to a 'dynamic disk' in Disk Management (backups first, good plan) or given perhaps a GPT partition layout?
 
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I can't shrink the volume, it says an unexpected error occurs and to check the System Event Log. I can't seem to find the associated event log in Event Viewer though.

Windows is also unable to run a Disk Check, and even when a drive letter is assigned it doesn't show up on Disk Defragmenter. When attempting to apply security permissions, it says access is denied.
 
Try with the disk attached to another machine? A disk that fails a disk check is a tad worrying.

Can you run a disk check on other disks connected to this system? (chkdsk is a read-only one, chkdsk /f isn't a full check and shouldn't take long, ie. about 10 minutes, chkdsk /f /v /r is a full one).

I'm wondering whether something is getting in the way, perhaps security software or malware.
 
Create a dummy user and try it under that user. Could be a login script with your main account set to assign/unassign drive letters, or just a corrupt user profile.
 
ShadowValentine said:
I've swapped the sata cable with my dvd drive, it still didn't stick.

Why would that affect just one drive? o.o
Click to expand...
Each drive has its own SATA port and cable. I thought you might have a connection problem with the cable or the port. You're not trying to run multiple SATA drives off a single port, are you?
 
ShadowValentine said:
No no, sorry, I meant that second one for Mushkins. Sorry, was a little tired when I wrote that
Click to expand...

Download HDtune, it has a free trial and will test every aspect of the drive. I think you can put some stuff in the registry to assign it a letter, or even create a .bat file to start on bootup to automatically assign it a letter.
 
@Mikeymikec - I couldn't find the system event log for anything that might relate to it at all.

@Smoblikat - How would I go about doing the registry/ .bat stuff? I'll test it with HDtune in a moment.
 
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