None of these programs ever reported any problems with my system drive and I used them to verify the drive's disk structure as well as media surface since iDefrag's error logs showed corrupted disk sectors. The programs I purchased was Drive Genius, Disk Warrior and Check it. I did purchase several other hard disk performance programs to see if they would report any problems as well.
The solution was to enter a new boolean parameter in iDefrag's plist file called disableThermalMonitorCompletely and the program ran fine. I emailed Coriolis' tech support and they had me go through some troubleshooting procedures and last night, I was able to get iDefrag to properly defrag my system drive again. When I tried it again, it hung part way through and went no further. When I did it again in March, the MBP crashed and I had to do a reboot. In December, iDefrag optimized my MBP's Macintosh HD without a problem. Now, I purchased a copy of iDefrag originally for my iMac G5 and when I got my MBP, I installed it there as well.
The OS may delay that process with its own optimizations but all hard drives fragment over time when used as the system drive. I come from the school of thought that says the deleting and writing of new files to the system drive will, over time, fragment a hard drive. Second, I don't want to get into a debate about whether or not the OSX system drive should or should not be defragmented. If anyone else has any information on this problem, please post what you know so the rest of us can benefit. At this time, it appears that the problem is with my MBP and NOT iDefrag. This posting is to share my experiences with iDefrag and my MBP and what has been determined to be the problem.
IDEFRAG KEEPS RESTARTING FREE
Updates are free to registered users (perhaps until they come out with a major new version, I'm not sure).First, I would like to say the Coriolis' iDefrag is a fine program and it works well on both my MBP and iMac G5. Also, make sure you have the most recent version of iDefrag. Back up your valuable data before defragging. It's nowhere near as thorough as iDefrag.Ĭaution: Defragging is, by nature, a bit risky. BTW, OS X does defrag its drives automatically, but only files smaller than 20 megs (I believe). I use it once every 6 months or so on my multiple machines. Boot from the CD by restarting the computer and holding down C.
IDEFRAG KEEPS RESTARTING DOWNLOAD
Go to their website, login and download the Coriolis CD Maker. IDefrag optimizes the hard drive in addition to defragging it. If you defrag monthly, for example, you're probably not going to notice a performance benefit month to month. It's good for defragging a disk that has been used for quite awhile, especially if you download a lot of stuff from the Internet or use big audio and video files. The best thing to do is back up your data BEFORE your disk gets scrambled. Or try the commercial Data Rescue II by ProSoft Engineering. if so, try to copy important data off it to your backup drive. The internal drive may mount on the Desktop.
Boot from the external drive by restarting and holding down the Option key.
IDEFRAG KEEPS RESTARTING INSTALL
If you have a bootable external drive, install OS X on it. The scrambled drive will hopefully show up as a disk on the other Mac's desktop. Connect the two with a Firewire cable that has the correct ends.
Start up the computer with the damaged hard drive holding down T. Use it to try and recover important data. If you have two Macs, search this site ("Search" on the dark blue strip above) or Google for "Firewire Target Disk Mode". If you don't have backups, there are are some steps you can take to recover your data. You need to reformat your hard drive and restore your data from backups. Fletch, it's probably not going to help your scrambled data. I have iDefrag, and it works VERY well if you keep it in perspective.
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