Most drive problems, however, result from data being in the wrong place, and can be repaired using Techtool Pro’s Volume Rebuild tool. Sadly, if something is physically wrong with the drive, it will need to be backed up and replaced, but the sooner this type of damage is detected, the fewer files - like cherished memories and important personal documents - will be lost. So, it's important to be able to test drives for problems and then repair them. ![]() Because data changes so frequently, it can sometimes get scrambled. Your Mac's hard drive, even if it is a Solid State Drive, is more likely to experience problems than any other component on your Mac. Simply launch Protogo, choose Protogo from the Mode menu, and use it to set up a diagnostic disk. You can then use this device to boot, check, maintain, and repair Macintosh computers as needed. TechTool Protogo allows you to create a bootable diagnostic device that contains TechTool Pro and all of its most powerful tools as well as any of your own utilities you may wish to install. The portability of TechTool Pro is now included with every copy of TechTool Pro. The test reports cycle count, percent of total capacity remaining, along with the battery's overall condition so that you can use your Mac unplugged with confidence. TechTool Pro now makes it easy to check on the health of that battery. MacBook models have one important feature that separates them from their desktop cousins - the battery. The new Fans test spins up the fans in your Mac to make sure that they at capacity and speed to ensure your Macintosh is running at its best. It's important to make sure that all the fans in your computer are functional. Every computer generates heat, and almost all of them use fans to cool themselves when components become too hot. If you've ever used a laptop for an extended period of time, you might have noticed that your Mac's palm rests can double as hand warmers. If any of those sensors report values outside of their acceptable operating range, the new Sensors test will let you know so that you can take the necessary steps to prevent a minor problem from becoming a major one. On some machines there are more than 100 electrical and temperature sensors that TechTool Pro will check. In TechTool Pro 8, we're taking it a step further, testing a wider variety of components on your Mac's motherboard. TechTool Pro already tests the major components on your motherboard: RAM, Processor, Cache, etc. In addition, we've now integrated Protogo, so that you can create your own custom test drives for out in the field. ![]() You can now test the sensors and fans on your Mac, along with the battery if you're using a Mac laptop. TechTool Pro 8 brings with it some of the deepest hardware testing yet - testing components on your motherboard that no other utility can access. ![]() Easy to use for both home users and professionals, TechTool Pro utilizes full 64-bit compatibility to keep your Mac running at its best. You may wish to perform this on a copy of the System or Finder just so you will have the original saved in case something goes wrong.The new Techtool Pro 8 is the most robust hardware diagnostic tool available for Macintosh. Then open the System or Finder in ResEdit and then immediately save it and quit. Just run ResEdit, click on the opening credits to dismiss them, close the file dialog box, go to the "Preferences." under the File menu, and choose "Verify files when they are opened". If you wish to fix it in the interim you can do so using Apple's ResEdit. We hope to include a routine that will automatically correct this in the next update. If the File Structure tests report a damaged System or Finder, but the System Files tests do not, then the issue is most likely a minor resource length problem that will not cause you any difficulty. Robert Penman had an odd problem where TechTool Pro 3.0.2 reported that his System and Finder files (Mac OS 9.0.4) were fine but TechTool Pro 3.0.3 claimed they were "damaged." He contacted MicroMat Tech Support about this and they replied:
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