Thoughtful, detailed coverage of the Mac, iPhone, and iPad, plus the best-selling Take Control ebooks.

 

 

Pick an apple! 
 
Extract Directly from Time Machine

Normally you use Time Machine to restore lost data in a file like this: within the Time Machine interface, you go back to the time the file was not yet messed up, and you restore it to replace the file you have now.

You can also elect to keep both, but the restored file takes the name and place of the current one. So, if you have made changes since the backup took place that you would like to keep, they are lost, or you have to mess around a bit to merge changes, rename files, and trash the unwanted one.

As an alternative, you can browse the Time Machine backup volume directly in the Finder like any normal disk, navigate through the chronological backup hierarchy, and find the file which contains the lost content.

Once you've found it, you can open it and the current version of the file side-by-side, and copy information from Time Machine's version of the file into the current one, without losing any content you put in it since the backup was made.

Submitted by
Eolake Stobblehouse

 

 

Related Articles

 

 

No Correlation Between Heat and Hard Drive Failure

Send Article to a Friend

The folks at online backup service Backblaze have once again taken a statistical look at their hard drives to find out if they’re affected by temperature.

The results seem to counter our general recommendation to give hard drives plenty of ventilation room in “The Care and Feeding of External Hard Drives” (28 April 2014). Overall, Backblaze found no correlation between heat and failure rates, with one exception: the Seagate Barracuda 1.5 TB drives, which failed slightly more often when run at higher operating temperatures. But the Hitachi drives surveyed actually failed a bit more frequently at cooler temperatures. It’s worth noting that the drives experienced average temperatures between 22° and 30° Celsius, well below the 55° to 60° maximum operating temperature recommended by drive manufacturers.

In any case, it’s still important to run drives within their specified operating temperatures, which means giving them sufficient ventilation. As long as you don’t block cooling vents or put them in insanely hot environments, they should not be adversely affected.

 

READERS LIKE YOU! Support TidBITS by becoming a member today!
Check out the perks at <http://tidbits.com/member_benefits.html>
Special thanks to Ken Spencer, Joe Bly, Froggfeather, and Otto Eggers
for their generous support!
 

Comments about No Correlation Between Heat and Hard Drive Failure
(Comments are closed.)

Anonymous  2014-05-19 16:58
Where are they measuring temperature? These don't appear to be SMART sensor numbers as they are much too low.

For example, my Hitachi SMART reading is 38C inside an xServe with avg inlet temps of 22 and an internal ambient of 30. (Inside a server room at 21.)

The article graphs the Hitachi from 21 to 31 which suggests they are using internal ambient or something else external to the drive.

I realize SMART stats have their drawbacks but I would think that the temp would be more useful if trying to find direct correlations regarding temp.

Anyone?
Adam Engst  An apple icon for a TidBITS Staffer 2014-05-20 06:33
They seem to be measuring ambient air temperature in their drive pods, which would likely be lower than the SMART-reported temperature within the drive itself.