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
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Regards,
Stephen Chape
/
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