Welcome to the MacNN Forums.

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Notebooks > SMART failing

SMART failing
Thread Tools
Join Date: Jun 2000
Location: Cambridge, Chicago, Jerusalem (school/home/heart)
Status: Offline
Reply With Quote
Feb 27, 2011, 10:03 PM
A few minutes ago I ran SMART Utility (downloaded from Apple downloads) and it reported the following

http://www.flickr.com/photos/[email protected]/5483929117/

I ran the Disk Utility "verify disk" and it reports the disk is fine.

Should I go to the Genius tomorrow?
Join Date: Jun 2000
Location: California
Status: Offline
Reply With Quote
Feb 27, 2011, 11:30 PM
SMART Utility cries "wolf" too soon, and Disk Utility waits longer than it should.

That error means one block failed to read. It won't be reallocated until it fails a write operation. I wouldn't sweat a single pending reallocation. If you see more though, the drive will be on the way out.
Join Date: Apr 2001
Location: San Antonio TX USA
Status: Offline
Reply With Quote
Feb 28, 2011, 06:45 AM
As reader50 says, SMART utilities, especially Apple's, provide "absolutely worst case in this or any nearby universe" indications of "failing" disks through the utility's interpretation of the SMART data. One or two blocks is to be expected through the life of a drive, and the drive typically attempts to recover the data and write it to good blocks - often so slickly that you never know it happened.

On the other hand, when the disk itself says "I'm bad," all SMART utilities I'm aware of just pass that on straight to the user without interpretation.

If SMART says BAD, it's bad. If it doesn't say "drive has failed," then the user needs to interpret the data, and apply a very critical analysis to what a utility concludes about that data.

Glenn -----OTR/L, MOT, Tx
Join Date: Apr 2000
Location: Gothenburg, Sweden
Status: Offline
Reply With Quote
Feb 28, 2011, 06:52 AM
Agree with the above posters - saying "failing" at that point is way too soon. I would read that error as:

1) Back up now. If you weren't already backing up regularly, take this as a hint that you should start.
2) Keep an eye on it. Run the SMART utility again to check for the total number of reallocated sectors. If it keeps climbing regularly, worry.
The new Mac Pro has up to 30 MB of cache inside the processor itself. That's more than the HD in my first Mac. Somehow I'm still running out of space.
bstone  (op)
Join Date: Jun 2000
Location: Cambridge, Chicago, Jerusalem (school/home/heart)
Status: Offline
Reply With Quote
Feb 28, 2011, 11:50 AM
I don't need to back up now. I backup every night at 10pm. I have mozy and for years I have felt extremely safe if my HD were to die or laptop stolen.

I'll run the util once a week and if I see an upswing I'll bother Apple.
Thread Tools
Forum Links
Forum Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Privacy Policy
All times are GMT -4. The time now is 05:31 AM.
All contents of these forums © 1995-2017 MacNN. All rights reserved.
Branding + Design: www.gesamtbild.com
vBulletin v.3.8.8 © 2000-2017, Jelsoft Enterprises Ltd.,