Thanks for the input Rob.
> On 28 Dec 2016, at 9:18 pm, Rob Phillips <[email protected]> wrote: > > G'day > > I've just had a problem on one of my backup/ archive drives, and I was > fiddling around trying to recover it. > > Diskutil didn't work, even though I tried it several times - this sometimes > works to recover a disk. > > I bought Techtools last year, on a special advertised through WAMUG. It > didn't do anything extra to recover my volume (although it is useful > otherwise). > > Some google searches told me of specific Terminal commands to try, but they > didn't help on this occasion. > > I was left with no option but to reformat the disk. :-( > > After reformatting, I thought to recover the lost files. TechTools could do > nothing because I hadn't turned on its file recovery function for this drive. > :-( > > If I had a copy of DiskWarrior, I could probably have recovered my data > (movies) with it. However, I stopped buying this a few years ago, > because they were charging USD100 for an upgrade with each OSX upgrade. > > I hope this is helpful background. > Rob > > On 28/12/16 5:44 pm, Stephen Chape wrote: >> Thank you Ronni. >> I had been reading on the web pretty much what you have stated. >> But was just looking for some local confirmation. >> >> I have only ever owned Techtool Pro but have not updated it for quite a >> while. >> Something else I need not be concerned about I reckon. >> >> Thanks again. >> >> >>> On 28 Dec 2016, at 11:44 am, Ronni Brown <[email protected] >>> <mailto:[email protected]>> wrote: >>> >>> Hello Stephen, >>> >>> My comments in Situ below. >>> >>>> On 27 Dec 2016, at 6:50 pm, Stephen Chape <[email protected] >>>> <mailto:[email protected]>> wrote: >>>> >>>> Hi folks. >>>> >>>> Does anyone know if it is really worth buying third party disk utility >>>> these days ? >>>> EG: Disk Warrior or Tech Tool for example. >>> >>> If you are running El Capitan or Sierra, My short answer is “No, its not >>> worth buying third-party Disk Utilities these days” >>> I've always had Disk Warrior, TechTool Pro, Drive Genius and other >>> third-party utilities installed on my earlier Macs and used them quite >>> frequently. >>> But I don’t even have these utilities installed on my current Macs since >>> probably Yosemite OS X 10.10 - my current Macs are running Sierra 10.12.2 >>> (I still have the above utilities installed on my Support Drive). >>> >>>> >>>> Or can most things be covered by Mac Disk Utility ? >>> >>> “Apple has made ongoing hardware and software improvements that keep disks >>> running happily more of the time. >>> OS X performs certain disk maintenance tasks automatically in the >>> background—for example, it defragments smaller files on the fly, keeping >>> all their segments contiguous on a hard disk so they’ll load faster. >>> (Solid-state drives don’t require such defragging.) >>> >>> And, when you perform a Safe Boot (starting your Mac with the Shift key >>> held down), OS X runs a more extensive set of diagnostic and repair >>> procedures without you doing anything else. >>> These and other improvements to OS X have reduced frequency of disk errors. >>> In addition, Disk Utility has gained a number of new features in recent >>> years, and it can now repair faults that might once have been out of its >>> reach.” >>> >>> If you look over the feature lists of the major disk utilities, you will >>> find that they all advertise capabilities that Disk Utility already offers >>> for free. The three third-party programs can check a drive’s SMART >>> (self-monitoring, analysis, and reporting technology) status, repair disk >>> permissions, and repair at least some types of volume corruption. Drive >>> Genius and TechTool Pro can create a bootable duplicate of your disk and >>> securely erase free space, and Drive Genius can also initialize and format >>> drives. >>> But Disk Utility does all that, too. >>> >>> Disk repair always requires you to start up from a separate volume. But as >>> long as your Mac is running at least Lion or new OS X , you don’t need a >>> second drive; simply restart while holding Command-R to use OS X Recovery, >>> which boots your Mac from a hidden partition (or, in some cases, over the >>> Internet) so you can run Disk Utility. >>> >>> The third-party utilities, by contrast, ship on bootable DVDs—except that >>> they can’t boot the newest Mac models (not even if you use an external >>> SuperDrive, for Mac models that lack an internal one). So in order to >>> repair your startup disk, you’ll need to create a separate boot volume with >>> the disk utility installed. (TechTool Pro’s eDrive is the sole exception >>> here, behaving much like OS X’s Recovery HD.) >>> >>>> I get the occasional slow down and more rarely freeze at start up and want >>>> to run some checks. >>> >>> Try Safe Mode: >>> Some problems can be solved with Safe Mode. Restart your Mac. As soon as >>> you hear the startup chime, press and hold the Shift key until you see the >>> grey Apple logo. >>> The startup process may take a while; once it’s done the words “Safe Boot” >>> should appear in red in the login screen menu bar. >>> Log in and you’ll see a progress bar as Sierra runs diagnostics and >>> clean-up processes. (It also disables software that loads at startup and >>> login.) >>> If the problem goes away, restart again normally. The problem is most >>> likely due to third-party software that was disabled in Safe Mode. Look for >>> updates in the App Store. >>> If the problems persist Boot into Recovery Partition: >>> 1. Restart your Mac - Hold down ⌘-R until the gray Apple logo appears; >>> 2. Locate & open Disk Utility - in Recovery, you can simply select it in >>> the list that appears and click Continue. >>> 3. In the list on the left , select your startup volume. Note that volume >>> names are indented underneath the names of the physical devices on which >>> they reside. >>> 4. Click Repair Disk >>> >>> Disk Utility examines your disk and attempts to repair it if necessary. >>> When it’s finished, you can quit Disk Utility and restart your Mac normally. >>> >>> Cheers, >>> Ronni >>> >>> 13-inch MacBook Air (April 2014) >>> 1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz >>> 8GB 1600MHz LPDDR3 SDRAM >>> 512GB PCIe-based Flash Storage >>> >>> macOS Sierra 10.12.2 >>> >>>> >>>> Regards, >>>> Stephen Chape >>>> >>> >>> -- The WA Macintosh User Group Mailing List -- >>> Archives - <http://www.wamug.org.au/mailinglist/archives.shtml >>> <http://www.wamug.org.au/mailinglist/archives.shtml>> >>> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml >>> <http://www.wamug.org.au/mailinglist/guidelines.shtml>> >>> Settings & Unsubscribe - >>> <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug >>> <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>> >> >> >> Regards, >> Stephen Chape >> >> >> >> >> >> >> >> >> -- The WA Macintosh User Group Mailing List -- >> Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> >> <http://www.wamug.org.au/mailinglist/archives.shtml> >> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> >> <http://www.wamug.org.au/mailinglist/guidelines.shtml> >> Settings & Unsubscribe - >> <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug> >> <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug> > -- The WA Macintosh User Group Mailing List -- > Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> > Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> > Settings & Unsubscribe - > <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug> Regards, Stephen Chape
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