While the operating system serves as the 'window' for interacting with drives in many ways, there is no API for dealing with the disk directly. However, the operating system and the file system are, in fact, distinct from one another. "It is understandable to conclude that Mojave, or Catalina support and APFS support would mean the same thing. But I imagine a change in processors won't change it much going forward. I have been using it so long it pays off just for the ease of making say custom bootable thumb drives and such, but others might not find that so. But that's true of lot of other utilities like other cloners and synchers. Many of the thing TT does, like some repair, formatting, cloning, etc, can be done with Disk Utility or via the Terminal. I've found it useful on occasion after I switched from DiskWarrior (not sure they're even developing now). It's good it didn't reformat, since it would probably have corruption that you might not have noticed when it was in the cam.Īnd as to the future of programs, Micromat now has version of TechTool Pro 13 out, which does work with APFS and can even manage the APFS shapshots for recovering files. They have a lifespan, and I've toasted more than one in a dashcam. Well, I was going to suggest dropping it in the trash, but that'll work I dropped the MicroSDXC card and cannot find it now. DriveDx does the SMART things and is a lot cheaper than Techtool. Of course they do many things that Disk Utility doesn't do, so up to you whether they are worth it. Meanwhile, in my opinion, these apps are not worth having as they are unable to do the main thing I ever bought them for, ie directory repair and rebuild, which has to be done by fsck. Whether Apple ever intends to release the APFS info is anyones guess. Disk Warrior just says it can't repair as I remember. My understanding is that Apple have still not released the necessary info for these apps to rebuild APFS directories, which they had done for HFS+.īecause of this TechTool and Drive Genius use the same fsck routine to verify and repair that Disk Utility First Aid uses. The issue is whether the tool supports the file system in the first place. Whether a disk utility tool can repair a particular file system has little to do with whether a Mac is Intel- or ARM-based. I wonder about Apple Silicon and how will Alsoft and ProSoft Engineering respond to the new ARM based Macs? I thought formatting with Disk Utility would work but it didn't. I'm using the SD Memory Card Formatter now. SD Association – SD Memory Card Formatter They also recommend that if you are going to format SD-family cards on a computer, you should not use the standard Windows or Mac OS X formatting utility, but should, instead, use their special memory card formatter. SD Association – Capacity (SD/SDHC/SDXC/SDUC) The SD Association defines FAT32 as the standard file system for a SDHC card, and exFAT as the standard filesystem for a SDXC one. Cameras don't understand any of those file systems. MicroSDXC cards don't have a lock switch.įor cards that you're going to use in a digital camera, you don't want to use APFS or HFS+ (or NTFS, for that matter). I didn't notice any lock from looking at the disk icon. Google and WD's native Windows diagnostic tools helped me isolate the issue (to some degree).I've tried to format to the Apple File System (presuming APFS) from Disk Utility and it will either fail or be successful but nothing that I can see actually happens. I've had a WD disk exhibit strange behaviors and first became cognizant of the problem by way of a single error during the initial boot up sequence. Using multiple tools may also prove to be an affective strategy.Īnother avenue which can help in discovery is to comb your Console's logs for anomalies. If you can use those, then all the better. But none are as powerful as the utilities released by your respective hard drive manufacturer. There of course is some continuity there but they are not monogamous.ĭiskWarrior and Drive Genius will undoubtedly do a much better job diagnosing the physical health of your drive. It's meant more to isolate problems with your data set than it is your hardware. Is Disk Utility good at finding hardware issues? No, not really. However it should stand to reason that a hardware fault will likely permeate through the file system structure (though not always). It looks at how the data is stored and not if the drive is reporting mechanical errors (to some extent this is reported by the S.M.A.R.T status). The option to verify (and repair) your disk deals with the health of the file system (HFS+) and the integrity of the data that resides on it, rather than the physical disk. Disk Utility in many respect is powered by fsck, a command line utility that deals with file systems (not just the one found on OS X).
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