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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Consumer Hardware & Components > External Seagate 4TB USB3 hard drive locked Finder up during Time Machine backup...

External Seagate 4TB USB3 hard drive locked Finder up during Time Machine backup...
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And.reg
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Sep 6, 2019, 09:27 PM
 
External Seagate 4TB USB3 hard drive locked Finder up during Time Machine backup... then after disconnect could not be recognized


Over the past month, my Seagate 4TB USB3 hard drive 1K9APV-500, which I have been using for Time Machine backups for a few years (can't remember when I first got it, as a gift), has been displaying some unusual behavior when I connect it to my 2015 Pro Macbook 15.

The external Seagate has been taking longer to handshake, and a few times will say Disk Ejected and lose connection, even though I didn't even remove the plug. (I have been connecting via USB-C to USB-A adapter.)

But today, I connected the Seagate, copied a folder containing a few files to my Pro Macbook's hard drive... and just as Time Machine engaged, Finder locked up. I couldn't even get Finder to relaunch until I physically disconnected the external Seagate.

After I restarted my computer, the external Seagate no longer shows up in the Finder or Disk Utility. Sometimes even reconnecting the external Seagate will lock Finder up again. Other times, nothing. I tried two different ports on my Pro Macbook. No luck.

What's going on? If the drive is defective, then can I at least get it replaced?


Also, I just ran Disk First Aid on my own internal Pro MacBook's hard drive, just because of all of the weirdness due to the external Seagate, and Disk First Aid gave some errors:

error: directory valence check: directory (oid 0x3): nchildren (237) does not match drec count (192)
warning: snapshot fsroot tree corruptions are not repaired; they'll go away once the snapshot is deleted
error: btn: invalid btn_btree.bt_key_count (expected 4816048, actual 4816097)
Snapshot is invalid.
The volume /dev/rdisk1s1 could not be verified completely.

I'm a bit concerned that now my internal hard drive is/will be corrupted soon.
( Last edited by And.reg; Sep 6, 2019 at 09:39 PM. )
     
reader50
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Sep 6, 2019, 11:09 PM
 
Try a replacement cable on the Seagate external. If that doesn't work, have a nerd with desktop computer crack the case open. Pull the real drive inside, plug it into a real SATA bay, and test it.

The external may have simply died. It happens.
error: directory valence check: directory (oid 0x3): nchildren (237) does not match drec count (192)
warning: snapshot fsroot tree corruptions are not repaired; they'll go away once the snapshot is deleted
error: btn: invalid btn_btree.bt_key_count (expected 4816048, actual 4816097)
Not sure about the first error, sounds like the directory was expected to have more entries. Probably not serious. Most likely some temp files didn't get fully written when the machine locked up.
The 2nd error can be ignored. The TM snapshot in question will be discarded at some point.
The 3rd error is probably another view of the first error. Some scratch files lost during the crash.
     
And.reg  (op)
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Sep 8, 2019, 04:20 PM
 
New replacement cable didn't work. Will email Seagate, external is likely dead.

Can someone recommend a long-lasting external hard drive that won't die after like 2-4 years? That seems to be my luck, doesn't matter if it's OWC, Toshiba, and now Seagate... or recommend an online backup storage service.

fsck fixed the 3rd error.
     
reader50
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Sep 8, 2019, 05:08 PM
 
I've long heard good things about BackBlaze.
     
   
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