Existing users, 
 TechTool Pro - 4.6.2hardware/software diagnostic tool |
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Feedback Summary:
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| Overall Rating: | Not rated (0.0) | Features: | Not rated (0.0) | Support: | Not rated (0.0) |
| Ease of Use: | Not rated (0.0) | Quality / Stability: | Not rated (0.0) | Price: | Not rated (0.0) |
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Featured Reviews
Saved my hard drive! 
- Version: 4.6.1, 10/20/2009 12:11AM PST
barretme
My Mac OS partition crashed. Was on AppleCare phone support for a couple hours and they couldn't help, so they recommended I download TechTool. It came free with my AppleCare service. I just let it run and do its thing, and it fixed whatever was wrong with my hard drive and saved me from losing all my data. Highly recommend!
Excellent utility, but .... 
- Version: 4.6.1, 7/11/2008 03:13AM PST
(1 of 2 users found this comment useful)
Gulliver64
Tech Tool Pro saved me from computing desaster more than once! It is very reliable and it's features to prevent problems or at least warn early work perfectly.
However, there is one major drawback: Tech Tool Pro is extremely slow when defragmenting the hard disk. Even on my 8-Core-3-GHz MacPro it took more than 2 hours to defrag the internal hard disk which is less than 25% full. Tech Tool Pro uses only less than 20% of the available CPU-power (according to Apple activity monitor) and uses only 64 MB of physical RAM. Since defragmentation has a lot to do with reading data from the hard disk to RAM and write them back to hard disk this seems to be one of the bottle-necks for performance. In a time when even the cheapest consumer level computers are sold with at least 1 GB of RAM this strategy is completely outdated! For 10 years now every single Macintosh comuter was sold with at least 256 MB RAM and Tech Tool Pro does not even run in these machines since it requires at MacOS 10.4 which itself requires at least a G4 computer (which shipped with a minimum of 512 MB RAM).
However, there is one major drawback: Tech Tool Pro is extremely slow when defragmenting the hard disk. Even on my 8-Core-3-GHz MacPro it took more than 2 hours to defrag the internal hard disk which is less than 25% full. Tech Tool Pro uses only less than 20% of the available CPU-power (according to Apple activity monitor) and uses only 64 MB of physical RAM. Since defragmentation has a lot to do with reading data from the hard disk to RAM and write them back to hard disk this seems to be one of the bottle-necks for performance. In a time when even the cheapest consumer level computers are sold with at least 1 GB of RAM this strategy is completely outdated! For 10 years now every single Macintosh comuter was sold with at least 256 MB RAM and Tech Tool Pro does not even run in these machines since it requires at MacOS 10.4 which itself requires at least a G4 computer (which shipped with a minimum of 512 MB RAM).
Most Recent Replies: View All 1 Replies
- Excellent utility, but ....
Techtool Pro Success - Version: 4.6.1, 7/1/2008 05:09AM PST
(1 of 2 users found this comment useful)
dunruh--2008
Recently I have had many problems with my hard drives, both internal
and external. I had two external Western Digital drives fail. I tried
Diskwarrior but it failed to fix any of my drives. I recently updated
TechTool Pro and decided to use it to examine my drives. It found
directory problems in both my primary drive and my external 1TB WD
drive. The program repaired both my main drive and my external drive.
I am now able to use my external drive (which I had gotten an RMA to
return it) and my internal drive now allows me to operate normally (I
previously was unable to update Microsoft Office 2008 because of the
directory problems,; now I can update successfully). Thank you for
your great product!
Doug Unruh
Unreliable - Version: 4.6.1, 3/23/2008 08:15AM PST
(5 of 5 users found this comment useful)
Simon Chapman
I have just run Tech Tool Pro 4.6.1 on my 10.5.2 internal drive (from an external boot drive) and it reported 'mismatched bitmap' errors in the directory (which it couldn't fix); but Disk Utility and DiskWarrior 4.1 both reported that the disk was fine.
To be sure, I used DiskWarrior to rebuild and replace the directory and immediately ran Tech Tool again -- for it to report the same bitmap mismatch error. I ran the other utilities again and they still said the disk was fine.
What gives? Is Tech Tool a waste of money?
To be sure, I used DiskWarrior to rebuild and replace the directory and immediately ran Tech Tool again -- for it to report the same bitmap mismatch error. I ran the other utilities again and they still said the disk was fine.
What gives? Is Tech Tool a waste of money?
Most Recent Replies: View All 2 Replies
- Unreliable (1 replies)
DO NOT USE THIS PIECE OF JUNK - IT WILL WRECK YOUR MAC - Version: 4.6.1, 1/23/2008 12:00AM PST
(6 of 8 users found this comment useful)
mxracinguy
Stay away from this awful app - it is DANGEROUS to your computer.
Run version 4.6.1 on a G5 duo 2.3gig with Leopard. I just pressed the 'go' button to check my hardware. To my surprise (and near panic) my second internal HD would not mount afterwards. I could still see it with Disk Utilities but it would neither repair nor mount it. Nothing would work. I had to run Diskwarrior and repair the damage that this pos Techtools did.
This app is a hazard. Do not use this. You have been warned.
Run version 4.6.1 on a G5 duo 2.3gig with Leopard. I just pressed the 'go' button to check my hardware. To my surprise (and near panic) my second internal HD would not mount afterwards. I could still see it with Disk Utilities but it would neither repair nor mount it. Nothing would work. I had to run Diskwarrior and repair the damage that this pos Techtools did.
This app is a hazard. Do not use this. You have been warned.
Most Recent Replies: View All 1 Replies
PROBLEMS with this release!! - Version: 4.6.1, 12/5/2007 12:03AM PST
(7 of 8 users found this comment useful)
tliszt
Unresolved ERROR messages...
I have an external LaCie 1TB drive dedicated as the OSX Leopard (v10.5.1) TimeMachine backup.
When I run the Performance —> Directory Maintenance routine on this drive, I consistently get the following message:
Directory Maintenance Failed. Insufficient Memory. (-108)
I have run this same diagnostic a) booting up from the TechTool Pro CD, b) from the installed version on the internal hard drive, and c) restarted from the eDrive created from the software. ALL still result in the above error.
Several other quirks **new** to this release:
• When restarted from the eDrive, the main (internal) drive CANNOT be diagnosed with Apple's Disk Utility. ("drive cannot be unmounted")
• When restarted from the eDrive, cannot run critical Volume Structures checks on internal drive because "drive cannot be unmounted"
• Even though my iMac is restarted from the eDrive, it does not appear to be the boot volume, and the internal Macintosh HD still appears as the startup drive.
Pretty confusing.
I have an external LaCie 1TB drive dedicated as the OSX Leopard (v10.5.1) TimeMachine backup.
When I run the Performance —> Directory Maintenance routine on this drive, I consistently get the following message:
Directory Maintenance Failed. Insufficient Memory. (-108)
I have run this same diagnostic a) booting up from the TechTool Pro CD, b) from the installed version on the internal hard drive, and c) restarted from the eDrive created from the software. ALL still result in the above error.
Several other quirks **new** to this release:
• When restarted from the eDrive, the main (internal) drive CANNOT be diagnosed with Apple's Disk Utility. ("drive cannot be unmounted")
• When restarted from the eDrive, cannot run critical Volume Structures checks on internal drive because "drive cannot be unmounted"
• Even though my iMac is restarted from the eDrive, it does not appear to be the boot volume, and the internal Macintosh HD still appears as the startup drive.
Pretty confusing.
Most Recent Replies: View All 1 Replies
Link for purchase page - Version: 4.6.1, 11/30/2007 11:29PM PST
(2 of 4 users found this comment useful)
4x
http://www.micromat.com/index.php?option=com_virtuemart&page=shop.browse&category_id=6&Itemid=80
No Link that can u - Version: 4.6.1, 11/30/2007 09:25AM PST
(2 of 6 users found this comment useful)
nymannouri
LINK DOES NOT WORK --- EVEN GOING TO MICROMAT .COM ----- CAN'T GET THROUGH
Most Recent Replies: View All 1 Replies
No, Update, not Upgrade - Version: 4.6.1, 11/30/2007 09:03AM PST
(2 of 4 users found this comment useful)
Rogue Crew
This is an alert to update from v 4.5.x to 4.6.1 for those of us that bought the Ugrade DVD. It is however, seemingly impossible to navigate from the link above - or even by selecting "Update now" from within TTPro - to a place where you can actually download this update.
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Upgrade, not update - Version: 4.6.1, 11/29/2007 09:16PM PST
(2 of 2 users found this comment useful)
WhiteDog
Micromat confuses the issue by calling this an update when, in fact, it's an upgrade. As such, it costs less than previous upgrades. But it's designed to work on a whole new version of the Mac OS. This is a significant change and no doubt took considerable work to develop. In my opinion, the charge is nominal under the circumstances.
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