Apple Hardware Test (AHT) contains a suite of diagnostics that test the hardware of your Mac. After isolating an issue on your Mac to a probable hardware issue, you can use Apple Hardware Test to help determine which hardware component might be causing the issue. Does anyone know any good diagnostic tools for Mac? Something inline with Apple Hardware Test, Apple Service Diagnostics, tech tool pro, preferably more in depth perhaps something low level, pre-OS-startup I need to do a complete hardware test on some MacBooks and one iMac, that is to do a thorough test of all components GPU, CPU, HDD, ODD, logic board, memory. Apple hardware test would suffice however i don't have the option to use it on all the machines. If there is somehow a way to download and run it through say an usb thumb drive, this would be ideal. Basically as stated it needs to be ha hardware test similar to apples own hardware test. I need it for situations where i can't run AHT. For intel MACs Also, I do not want benchmarks! The likelihood that a single tool or utility will provide all of the diagnostic capabilities that you are looking for is very slim; if you do happen to find such a utility, there's a decent chance that its support for said capabilities will be shallow. So while it may seem like a good idea to try to find a really generalized and versatile hardware diagnostics app, you'll probably be better off with getting smaller more specialized apps that are designed to only check one to a few of your system's hardware components. In addition, some hardware components such as your system's PSU (power supply unit) are best checked with specialized electrical equipment designed to check for faults in your PSU, such as your PSU is no longer capable of sustaining the level of Watts your system requires. Hardware Health Diagnostic Applications Hard-Disk/Solid-State Drive • • User Interface is kinda compact (feels a bit overwhelming with everything squished together). • $4.99 • Available in the App Store. • smartmontools • primarily command-line only, GUI depends on the X Server,but even if you do have XQuartz installed, GUI doesn't show up. (Check man page for usage details: man smartctl) • Free • Install via: brew install smartmontools • • Much nicer UI than SMARTReporter, feels much cleaner and less in your face. • Lots of statistics and info presented in a take your time kinda way. • $19.99 • Available in the App Store. Memory (RAM) NOTE I couldn't find much in the App Store with a few quick searches, but I do know of a couple different RAM diagnostic utilities, however, all of them require the use of a USB or a floppy or some other media type that can be booted into; while I have experience with at least one of these, I have never used any of these under Mac OS X. So you're on your own. • • Free and Premium versions available • Supports both Windows and Mac Check out for other applications of a diagnostic/forensic nature • • Free (and open-source) • Based on the previously mentioned memtest86. • memtester • A memory (RAM) stress-tester. • Free • install via brew: brew install memtester • see man page for more details: man memtester Also, while this may sound super silly, I'd invest some time in checking the contents of your systems' logs, like tail /var/log/system.log, however, if I were you I'd check everything in /var/log just to make sure that you aren't missing anything. In addition, be sure to run and check the output of sudo dmesg| less: in my experience, if your system is experiencing problems, there's a high likelihood that dmesg's output will shed light on the situation. Mac OS X boot-time keyboard shortcuts (in no particular order): • Hold down D during startup • Takes you to Apple's Hardware Test utility (or Apple Diagnostics, depending on Mac model) • Option+ D can be used instead to try starting up Apple Hardware Test or Apple Diagnostics over the internet • Hold down Alt+ Cmd+ P+ R during startup • Clears the PRAM (parameter RAM) and NVRAM (non-volatile RAM): if either the PRAM or the NVRAM become corrupt, problems will ensue. Hold the keys down until your computer restarts: release the keys after you hear the second startup sound. • Hold Alt down during startup • This will load the boot menu allowing you to boot to a different operating system partition you may have installed on your hard drive. May also allow you to boot to a USB, but that's just a conjecture.
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