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FORUMS General Gear Talk Computers 
Thread started 05 Sep 2010 (Sunday) 07:53
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Time to admit defeat?

 
hania
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Sep 05, 2010 07:53 |  #1

Imac.

I have a Lacie 500GB external drive I have been using for my Time Machine Backups.

Suddenly it fails to backup - saying there is a problem with the disc.

I repair the disk and all is ok for a day when the same happens again on Time Machine backup.

The repair fails this time so I spend 20 hours writing 'zero' to the disc.

I then run 'verify' and it says all is ok.

I then try Time machine again - same result as before - again if fails to backup.

I run ' repair : on 'verify' I get "invalid node structure", and currently is is repairing (very slowly for an empty drive - it estimates 2 mins but has been going for at least 15) .

Is it time to admit defeat and get a new drive?


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rioni
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Sep 05, 2010 08:58 |  #2

Perhaps. I'd try:

- Testing it on another machine to see if there is a problem there.
- If not, trying on another USB connection on your same machine.
- Writing a large file to the drive independent of the backup process. Does that fail?
- Any odd sounds like clicking coming from the drive? If so, it's going to die soon.
- Most important, if you feel the drive is failing, "back up" all backup data ASAP.




  
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hania
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Sep 05, 2010 13:43 |  #3

rioni wrote in post #10853371 (external link)
Perhaps. I'd try:

- Testing it on another machine to see if there is a problem there.
- If not, trying on another USB connection on your same machine.
- Writing a large file to the drive independent of the backup process. Does that fail?
- Any odd sounds like clicking coming from the drive? If so, it's going to die soon.
- Most important, if you feel the drive is failing, "back up" all backup data ASAP.

have written 57G of 93 G - still writing ok so far- another 2 hours to go.
update : wrote 93G ok.
Will try again.

update: seemed ok - but, when I do : get info: I apparently have 111G on disc - when I open it there is nothing.

Tried repairing disc and I get : error : can't unmount disc!

shall try erasing again


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tim
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Sep 06, 2010 04:53 |  #4

I'd toss the disk as soon as I got the first error. Disks are cheap. Data's priceless.


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hania
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Sep 06, 2010 06:32 |  #5

tim wrote in post #10857858 (external link)
I'd toss the disk as soon as I got the first error. Disks are cheap. Data's priceless.

quite - still getting error - so shall scrap


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jasonlitka
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Sep 07, 2010 21:04 |  #6

tim wrote in post #10857858 (external link)
I'd toss the disk as soon as I got the first error. Disks are cheap. Data's priceless.

Dead on. One error = RMA if in warranty or trash if it isn't.


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kfreels
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Sep 07, 2010 23:40 as a reply to  @ jasonlitka's post |  #7

Don't trash it till you try it on another machine. I've seem many people do this when the real problem is a faulty motherboard power supply sending irregular voltage to the USB header causing write errors on the disk. Power supply should be your first suspect with "intermittent" problems and definitely the place to start if the disk works on another machine. Of course if you re-format on a different machine and try to use it on that alternate machine and it fails, it is the disk - or the cord - or the AC adapter. Eliminate all of those possibilities before you toss it.


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hania
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Sep 08, 2010 03:59 |  #8

kfreels wrote in post #10869386 (external link)
Don't trash it till you try it on another machine. I've seem many people do this when the real problem is a faulty motherboard power supply sending irregular voltage to the USB header causing write errors on the disk. Power supply should be your first suspect with "intermittent" problems and definitely the place to start if the disk works on another machine. Of course if you re-format on a different machine and try to use it on that alternate machine and it fails, it is the disk - or the cord - or the AC adapter. Eliminate all of those possibilities before you toss it.

Am currently having it checked out. thanks for all the replies

yes - drive dead!


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Time to admit defeat?
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