These Mac products have been around for many years. I have used them and found them to be very reliable. Well worth the price. Snake oil extraordinaire. I used to work at an AppleCentre. NEVER did this product 'protect' TechTool Pro 7 Software Prices computer or save data.
I'm speaking from experience with actually trying to use a fundamentally broken application for its intended use. Don't waste your money! It gets many good reviews, but they are mostly written by tech journalists who have no idea whatsoever about hard disk technology, and you'll find that NONE of them have actually had it detect and repair a real-life error. Everything they write is based on reading a press-release or playing around with the flashy interface for ten minutes.
Many real user reviews point to people who find it to be a completely waste of money when something actually goes wrong. Or people who've had it installed for ten years and incorrectly think it's been somehow protecting them, yet statistically speaking they would never have had a problem ever to begin with, even without this software installed.
A disk sector could read fine, but can't be reliably written to. It also can't be re-allocated as a faulty sector by the hard disk's firmware if is not written to. If on the rare occasion an error is detected with TechTool Pro, it does not allow advanced recovery from non-damaged sectors but simply tells TechTool Pro 7 Software Prices that you need to buy a new hard disk and replace it.
It won't assist in detecting damaged files so they can be ignored or recovered from backup. However even the most basic Windows disk check software nearly immediately detects errors with the disks, and offers to attempt repair or recovery, and the better ones display which files are affected.
Good recovery software detects TechTool Pro 7 Software Prices remembers which sectors are faulty, and will skip these and concentrate on trying to recover data from good sectors. TechTool tries to blindly read ALL sectors, so as soon as it hits a bad sector the recovery fails, the drive crashes, or the whole computer locks up.
Even the front page on their own website states that TechTool Pro 7 Software Prices does not do anything - "Sadly, if something is physically wrong with the drive, it will need to be backed up and replaced" - this is rubbish also.
Many times a hard disk may have a few faulty sectors, which good software can re-map and ignore. The hard disk will continue to work as it should indefinitely, as long as those parts are ignored. But they need the host operating system to help them to detect where the faults are then inform them of the error, so they can be zeroed-out or ignored. More often than not the hard disk will just die on you with no warning. It's false security, but amazing the number of people who proclaim that "TechTool will protect me from data loss, so I don't keep backups.
Because that's what it claims. It protects you. Many people have told me I was lying and that "TechTool found many hard disk errors and repaired them for me" - when I checked the logs, it turns out their file directories were occasionally being corrupted, and TechTool would detect that damage.
The Mac file system is a journaled file system that automatically repairs itself. If there are errors, they will be caused by bad blocks on your hard disk. It was masking the problem by finding corrupted files, rebuilding them then copying them to a new part of the disk. It did nothing to detect the disk errors, or try to repair them by re-mapping the faulty sectors.
Huge post by someone who clearly doesn't like the product. I never represented this as a miracle cure and you seem to be honing down on one particular function TechTool Pro 7 Software Prices the tool. I think we'd agree that its usually overpriced, but thats partly why I shared this deal. Its also a quick and easy way to check memory for those without access to ASD or other internal tools. I think pinning some of the limitations of S. BTW I wasn't the one who negged your comment above, as I welcome proper criticism.
I agree with you in a case where a computer has been improperly powered down, TTP TechTool Pro 7 Software Prices occasionally help by repairing volume damage.
DiskWarrior can do the same though, and doesn't promise the world. However, I had two clients who lost entire hard disks after they used TTP to try to rebuild their corrupted volumes, but the volumes were corrupted due to bad blocks on the hard disks which TTP failed to detect.
So after it tried to transfer the repaired volume directory to the bad blocks, the hard disks crashed again. They would have been better off without it. But I was typing on my mobile before and wanted to quickly write a post to hopefully warn people about the dangers of relying on this product to do what it says, and so they can do their own research before purchasing.
I don't like when products are inherently broken and have been for years. I did email Micromat years ago describing the issues, and even offered to post them some of my known-faulty hard disks that tested as OK with TTP to help improve their product. But their response I don't have access to it unfortunatey as it was on an old work email was that very few people had complained about it before. Therefore not an issue.
Followed by some marketing TechTool Pro 7 Software Prices about 'always striving to improve their products'. Yet it's still not fixed. You mention quick and easy memory checks - but memory checks done with TTP are not to be trusted as they run AFTER the operating system starts up, meaning any memory that's being used by the OS is not TechTool Pro 7 Software Prices to test.
In two of those cases, after swapping memory modules from bank 1 to bank 2 then testing again TTP eventually detected the bad one, but the other was a laptop with one memory socket so that wasn't possible. Testing the memory module in another computer detected the problem immediately, but TTP said it was fine when tested on the original laptop. I'm not complaining about the limitations of S. A single click of your mouse runs a SMART Check of your hard drive to detect impending drive failure This implies it will detect if your hard disk is about to fail.
It will detect TechTool Pro 7 Software Prices problems, but it has no way of detecting impending failure.
TTP also will not fix Windows hard TechTool Pro 7 Software Prices, which many people use - think nearly everything without an Apple logo, and some TechTool Pro 7 Software Prices with. It won't repair or recover from flash drives, digital camera memory cards, even corrupt iPods. If you have a BootCamp volume, it will do nothing to protect it. Corrupted disk image? Forget it. It is a very limited product, but promises so many things. Given what you've said about the memory testing, do you recommend any alternative tool?
I'm mainly able to swap units out into a windows machine and run memtest off it, but it'd be nice to get something that runs on Apple hw as I no longer have access to ASD. I voted just because this is the best tech discussion I've ever seen on Ozbargain.
I would love to have Greenie work on my Macs anyday! I find it very frustrating when Apple bring out a new model then nearly every piece of software has to be updated to support it, and as you've found out your 4 year old Diskwarrior software is now essentially worthless as it doesn't support your current computer. I was sick of having to have a different CD or DVD for every model and having to maintain ten versions of software to support only six years worth of products, so unfortunately I had to stop supporting Mac and keeping current a few years ago.
Unfortunately I can't recommend any specific memory test tool now, as I just don't know what's available for current models. Sorry I didn't mention it before but I don't deal often with Mac anymore and had to literally go and dig my old Mac out from under a pile of tool boxes to turn it on and find out the name. According to their website it's now used by Apple at the Genius Bar: Apple's system wouldn't even let me order replacement parts unless I could verify with software and an error code that the disk was bad, so I had to sometimes take out nearly fifty small screws to remove laptop hard disks and put them in TechTool Pro 7 Software Prices Windows PC to get an error message!
It wasted many hours each week. After I saw a pattern of known-failures testing OK with TechTool Pro, I contacted both them and Apple Australia but neither took any notice, as their operations are based overseas anyway.
Any comments I left on official Apple forums were quickly deleted, despite trying to be polite and merely state the facts. But I just found this gem on their own TTP forums, which shows how completely clueless Micromat technicians are about hard disk bad blocks: TechTool Pro can detect bad blocks that have not yet been remapped to spares, but TechTool Pro 7 Software Prices cannot order the disk driver to remap them.
This is not uncommon, and is cause for neither panic nor complacency. Many new drives have one or two bad blocks that have developed since the drive left the factory, but most users are unaware of them, because they do not have the Surface Scan. Back up the drive, reformat it with Disk Utility with the option to zero all data chosen, and put the drive into use.
Above are just some snippets posted by a Micromat technician, in which he completely contradicts himself. He first says bad blocks are TechTool Pro 7 Software Prices, to be expected, that every drive has them. But then says that TechTool Pro can't repair them, the drive needs to be reformatted. Then goes on to say that if you find more than two bad blocks the drive is bad and should be replaced. But he also says in another part of the message too large to quote that all drives automatically re-map bad blocks.
However he TechTool Pro 7 Software Prices seem aware that hard disks are able to be instructed by software to map-out and ignore newly detected bad blocks. Other tools don't require reformatting the entire drive, and certainly don't require it be replaced. If you have Boot Camp and can boot into Windows, there TechTool Pro 7 Software Prices many good tools available to test hard disks and memory. Even the most basic Windows XP Check Disk tool It comes standard with Windows 98, XP, Vista, 7 and can be accecced by right-clicking the hard disk, going to 'Properties' then clicking 'Tools' - 'Error-checking' has a 'Scan for and attempt recovery of bad sectors' feature, which far surpasses TTP's hard disk 'recovery'.
It won't fix failing hard disks but if you just have a couple of bad blocks it's more than adequate. I just found people talking about a tool for OS X called 'Scannerz' - I have NEVER tested it or used it so won't to make any comments on its effectiveness, but it might be worth checking out: