How to reformat an external hard drive after time machine?

I have an external hard drive upon which I put movie files that I view through a Sony box (like the Roku box). I brought my MacBook in for a repair and connected the same external HD and used Time Machine to make a back up. It did reformat it in order to do so, but since the Sony box isn't a pc or mac I didn't think it would make a difference, but now the Sony box won't recognize HD. Is there a way to reformat it on my MacBook so that I can use it on the Sony box again, or do I need to reformat it with a Windows computer? I had no issues when transferring files only and using the Sony box.
If you give any instructions, please write them out specifically, don't just post "you have to partition it" and leave it at that. I am computer challenged when it comes to these things. Think instructions for a person one step above being vaguely aquainted with a Mac please. Thanks.

You can find a decent guide to formatting your drive here.

Similar Messages

Reformatting my External Hard Drive from Time Machine Backups

I used an existing external hard drive as my Time Machine Backup, but it only has 80 GB capability while my hard drive is 30 GB. I will buy a new one external hard drive and I want to revert the existing one back to a shared external hard drive. How do I reformat my existing external hard drive? Do I open it through iMac and delete the folders and rename the drive?

How do I reformat my existing external hard drive? Do I open it through iMac and delete the folders and rename the drive?
NO. There are some hidden files/folders TM uses, and which you won't be able to delete through Finder.
Open /Applications/Utilities/Disk Utility, select the non-indented drive just above the external (make sure you have the right one, NOT your internal), select the "Erase" tab, and erase it, formatting it to Mac OS Extended (Journaled). While you're there, make sure it's partitioned as GUID if you have an intel-based Mac, and APM if you have a PPC-based mac.
Both those operations will completely wipe the drive. You won't be able to recover any files from them after the wipe.
Good luck!
Message was edited by: joshz

HT3764 How to reformat an external hard drive using Snow Lepard to use for Time Machine

How to reformat an external hard drive using Snow Lepard to use for Time Machine

Use the Disk Utility in the /Applications/Utilities/ folder to erase it as Mac OS Extended (Journaled) with GUID as the partition map format(or APM if you're using a PowerPC Mac running 10.5).
(73291)

How to backup external hard drive to another external hard drive using time machine ?

Hello,
i have an external hard drive which i store all my drum samples and sound library on and files are contantly changing, adding new sounds, deleting old ones etc ..
So my method of back up as of now is to just copy all the edited files and click and drag to the back up disk.
Now, my question is, how do i back up my external hard drive to another external hard drive using time machine ? I read somewhere that you can do this, i cant find the post however. It would be nice to automate the back up process rather than manually finding the files to copy over.
Thanks in advance !

The question you pose is conditional, in that you should have more than an exact
capacity replacement for a clone, if the drive you are going from (or one going to)
has insufficient free space and that has a bootable clone on the drive; any space
tied up in a partition for Time Machine backup, takes away from the running space
if you should need to run the computer from a clone on the external HDD's other
partition.... Better to have a good capacity of additional reserve unused free space.
Be sure any clone copy that you hope to use as a re-close, that each in turn is tested
after a clone operation. Also consider using each running system's Disk utility and
have First Aid 'repair disk permissions'. Preparation of a new drive or even an old
drive that may have questionable artifacts or errors on it, should be reformatted. To
even go as far as Secure Erase (overwrite) at least one-pass before reformatting it
again, could help.
However, I'm not sure if the drives and situation you are looking at would necessarily
be a good match. It could work, but you'd need a reasonable size partition or hard
disk drive for a system. Snow Leopard and all its associated applications, can do
OK in a 100GB HDD. (My computers have more storage capacity than is used; so
for mine to have 60% free space, is good.) Virtual Memory is drive space used by
OS X, that can be a substantial amount for swap and temp files. Some applications
make duplicates of works-in-progress, for each change in an open file; that adds up.
{This question (& my reply) should've been in their own thread & not at the end
of one that is nearly three months old, + marked 'solved' by the original poster.}
So I guess I don't have a direct answer to your question; having just returned from
a few hundred miles and automobile issues, too. I'm not really thinking on-topic...
The clone should be on its own separate drive, and up to 3TB drive dedicated to
Time Machine may be overkill, however that software will consume old backups first
when it uses up all the space. Or usually that is what happens in TM backups. If
that isn't happening, there may an issue in how Time Machine is set up.
Good luck & happy computing!

How do I restore a failed external hard drive using Time Machine?

I have an external hard drive connected to my iMac that is being backed up with Time Machine. I just realized that should it one day fail and no longer appear as a connected device, I'm not sure how to restore its data to another external drive. When I disconnected the external hard drive (to mimic a drive crash) and entered Time Machine to see if I could verify that the external hard drive was, in fact, being backed up - I didn't know where to find it. Under the Today (Now) information, I didn't expect to see it there as it was no longer connected to the machine. But when I went back a few days, I expected to see its backup appear in the Sidebar. But no!
So - how do I restore a failed external hard drive using Time Machine?
Searches for this information on Google yielded "iffy" results. I'm hoping someone here is able to offer some clear steps to follow. Perhaps I'm missing something silly. Thank you very much!

I came across this discussion after encountering the same problem. Since my internal HD was cose to full I added an additional external HD to my setup. I moved my iPhoto files to an external HD and backed both this external HD and my internal HD up with Time Machine to another external HD. So far the theory. When I wanted to test if this setup worked I noticed that I could only see my iPhoto libraries on the external HD in Time Machine when the external HD was connected to my computer, but not if I turned it off. This led me to search for a solution on the Apple Support Communities discussion board.
The suggestions made Kappy seem right, at least in my experience, in that my Time Machine simply did not back up the external HD until I followed the steps he suggested above. These were the following:
"So, if you want it backed up then here's what you need to do:
1. In Time Machine preferences remove the external drive from the Exclude list.
2. Verify that it is now included with your other drive in the backup list.
3. Do a Backup Now to create a new backup of the external drive."
After doing this, my external HD showed up in the Backups.backupd as a seperate folder. I could clearly see the Time Machine back-up for my internal HD and my external HD. In addition, in Time Machine itself I was able to find the external harddrive by clicking on my own computers name under "Devices". I hope my experience helps to resolve your issue as this discussion board has helped me resolve mine (which I believe to be very similar).
Cheers!

Hi everyone, after updating to 10.6.8, i've been unable to backup to my external hard-drive on Time Machine. anyone having same issues?

I did a software update to 10.6.8. and I've been unable to back up my files to my external hard-drive on Time Machine. The error message it gives says "he backup was not performed because an error occurred while copying files to the backup disk."
It recommends using Disk Utility to repair the backup disk and i've tried that but it finds nothing wrong with the disk!
I even tried copying files off it so i could re-format the drive but it apparently can't do that and the error message is that there's a wrong case sensitive file. Please help, I really need a solution.
Thanks,
Regards,
Chi.

If you mean you're getting the same message:
see #C3 in Time Machine - Troubleshooting. It will show you how to locate the message(s) that describe the problem, then help you fix it. If that doesn't help, post back with details, including all the messages, your setup (especially the destination for the backups), what you've done, and the results.
If that's not the message you're getting, please clarify.

I back up with an external hard drive using time machine. I am trying to reload my iphoto library from an earlier date then it will let me. How do I get to an earlier date in time machine?

I back up with an external hard drive using time machine. I am trying to reload my iphoto library but it won't let me get back to a date that I need to. How do I do this?

Try Pondini's articles;
http://pondini.org/TM/15.html - scroll down to the pink box for iPhoto restoation.
Also http://pondini.org/TM/15A.html to clarify how to use the timeline.

Time Machine will not let me restore from backups after June, 2013. I can see the files on the external hard drive but Time Machine skips all of them and goes back to June, 2013. Does anyone have any idea what the problem is?

Time Machine will not let me restore from backups after June, 2013. I can see the files on the external hard drive but Time Machine skips all of them and goes back to June, 2013. Does anyone have any idea what the problem is?

rtilghman wrote:
telling me to buy a new router is NOT a solution.
And why not? Apple is selling these things like BigMacs. They can't make enough of them. You've been suffering since May because you refuse to get a decent router.
Can you imagine if a company that makes a refrigerator told me that I needed to upgrade my electrical system to rectify a problem with their device? What kind of response IS that?!?!
What if the problem with their device is that it requires a new-fangled "grounded" outlet and your circa 1890 house doesn't have grounded outlets. Would you refuse to purchase a $ 25 adapter on principle?

Restoring an external hard drive with time machine

I'm having a problem restoring an external hard drive using time machine. I'm on a macbook Air Running 10.7.5.
The external hard drive where I store all my photos crashed a few days ago. Not a total disaster, because it's backed up, but I can't figure out how to restore the drive onto a new hard drive. When I go into time machine without the corrupted drive attached, it does not show up in the time machine browser as an option for restore. (The files are definitely there, though, because I can see them when I look at the time machine files in Finder. I'm afraid if I just transfer the files by dragging, though, I'll mess something up.) I tried using the migration assistant, but I'm having the same problem there.
Anyone know how to do this? I'm a little frantic to get my photos back.
Thanks!

I am having a similar problem. I use a Lacie external hard drive connected to an Airport Time Capsule via USB to store my itunes library. Yesterday I disconnected the external drive from the ATC and connected it to my macbook pro via fire wire to transfer 40 gigabytes of media files from my laptop to the external drive directly rather than over wifi. When I reattached the external drive to the ATC the Lacie drive didn't show up even after rebooting everything. I then disconnected from the ATC and reconnected to the laptop and now I get an error message saying the Lacie disk is unrecognizable and needs to be reformated. The Lacie drive was being included in the time machine backups so the files should be available through time machine but I don't see anyway to access them because the Lacie disk icon doesn't appear in the time machine backups. Is there another way to browse the files?
I have had issues with Lacie disks not showing up on the desktop before, particularly when transferring files from one computer to another. The transfer usually goes fine but then when I reattach the drive to the first computer it isn't recognized anymore until I reboot and it sometimes requires a couple of reboots. I initially tried to connect the external drive to both the ATC and the laptop but that didn't work, although now I'm wondering if that was because the connection to the laptop was firewire rather than USB like the ATC. In any case I currently have over a terabyte of data on my lacie that I can't access which includes my entire itunes library and backup files from multiple computers which were "cleaned" but not restored.
Disk utility sees the drive but can't verify or repair and tells me to backup as many files as possible and then reformat. Unfortunately I can't see ANY files to backup because the disk won't mount anywhere. If anyone has a recommendation for utilities to recover the files I'd be most grateful to get them.

Backing up photos on iMac using external hard drive and time machine

How do i back up photos from my imac using an external hard drive and time machine
Thanks in advance

Apple explains how to use Time Machine in http://support.apple.com/kb/ht1427.
Setting up and using TM is very simple to do, connect any external HD (format as Mac OS Extended (Journaled) using Disk Utility ) and your computer shoudl ask if you want to use that EHD for a Time Machine backup. If you have any questions visit your local Apple Store or reseller and they can answer how to setup and use TM and also should be able to offer suggestions on EHDs. My personal preference is OWC (www.macsales.com) Mercury Elite Pro due to the build quality and OWC's level of support.

External Hard Drive and Time Machine questions

Hello, I am new here to the forums and I have looked all over for the answers to two questions that I have regarding external hard drives and the time machine feature.
For some background, I recently had a scare (water spill but luckily I had a keyboard cover on and the entire spill landed on the cover) with my Mid-2012 13" Macbook Pro (2.5Ghz) and due to almost losing all my data I've decided to invest in an external hard drive. However, rather than just purchasing a 500GB HDD to use as an external hard drive, I decided to kill two birds with one stone and upgrade my Macbook Pro as well by investing in the 480GB OCW Mercury Extreme Pro SSD. I'll be using the SSD as my internal drive so the original hard drive that came with my Macbook will serve as my backup external drive. Lastly, I plan to use the external drive solely for the purpose of backing up my MacBook in case something ever happens to my Macbook.
I am using this guide to help me with this whole process: http://circuitremix.com/?q=content/macbook-pro-solid-state-drive-upgrade-guide-a nd-performance-testing.
My two questions are:
1) When following the guide, it never mentions anything about the Partition Map Scheme. After being alerted to this and doing some additional research, is it better to go with the GUID Partition Table rather than the Master Boot Record?
2) After I have cloned everything onto my new SSD and replaced the HDD in my MacBook with it, should I erase everything on my HDD before setting it up with time machine? I was thinking about keeping the original data on the original hard drive (which would now be my external drive) just in case something goes wrong with time machine but I have read that people recommend solely dedicating the entire external hard drive for time machine backups.
Thanks in advance!

Format the new SSD in Disk Utility to Mac OS Extended (Journaled) and that will solve question No. 1.
After formatting, clone the new SSD using Disk Utility>Restore or Carbon Copy Cloner (down load from the Internet). Test the new SSD and if it performs as expected, do the physical swap.
Question No. 2. Erase the Time Machine HDD using Disk Utility and then install Time Machine. See this excellent website regarding Time Machine.
http://pondini.org/OSX/Home.html
If you want an external boot HHD, get another one and use Carbon Copy Cloner. This will give you redundancy in backups as well which is a good strategy. CCC also can update the contents in an incremental manner similar to Time Machine.
Ciao.

IMac won't boot if external hard drive running Time Machine powered on

Upon rebooting, my iMac 3.06 GHz Intel Core 2 Duo with 4GB RAM, running OS X 10.5.4, locked up in a gray screen, the "gray screen of death."
At the recommendation of the Apple Tech Support rep, I turned off the iMac using the power button, and rebooted with my USB and Firewire devices removed.
The iMac boots fine with everything except my G-tech drive 1GB external hard drive running Time Machine with no partitions, attached using a Firewire 800 cable.
If the external hard drive is on, I get the interminable gray screen.
If I boot with the external hard drive powered off and then power it on after I'm at the Mac desktop, the disc image mounts normally on the desktop.
I've already repaired all disc permissions and it doesn't help.
My external hard drive has used 907 of the 931 GB true capacity. Supposedly, Time Machine removes the old files to make room for the new files.
Time Machine itself is running properly once I get my iMac booted in this peculiar way.

Raja,
Do a SMC reset perhaps even a couple of times and see if that helps. Also in System Preferences + Startup Disk make sure the internal HD is selected.
SMC RESET
Shut down the computer.
Unplug the computer's power cord and all peripherals.
Press and hold the power button for 5 seconds.
Release the power button.
Attach the computers power cable.
Press the power button to turn on the computer.
PRAM RESET
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.
Roger

I have backed my Mac Book pro up to my external hard drive using time machine. My iPhoto now does not show any images, even when I upload from my iPhone

I have backed my Mac Book pro up to my external hard drive using time machine. My iPhoto now does not show any images, even when I upload from my iPhone

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HT201250 new external hard drive for Time Machine backup suggestions?

Ok, I have 3 external hard drives; unfortunately I've used them on my PC and they are read only on my iMac. So, I need to buy a new external hard drive for Time Machine backup. I'm a little confused; can I buy any EHD and them format it so Mac can use it or are there special EHD's I need to purchase?
Anyone have a particular EHD that is working well for you? Thanks, Blue

Bluehowler wrote:
Ok, I have 3 external hard drives; unfortunately I've used them on my PC and they are read only on my iMac. So, I need to buy a new external hard drive for Time Machine backup. I'm a little confused; can I buy any EHD and them format it so Mac can use it or are there special EHD's I need to purchase?
Anyone have a particular EHD that is working well for you? Thanks, Blue
Unless you need all three external drives for your PC, you can reformat in one of them in Mac OS Extended (Journaled) for use with Time Machine. However, since Time Machine backs up hourly, you'd need the external drive to be running constantly. That means ventilation of the drive becomes an issue since some, such as Seagate, can get very hot in their sealed enclosures. Some drive manufacturers try to get around this by spinning down the drive when not in use, but I've read complaints that that doesn't play well with a Mac. So whether you reuse one of your current externals or get a new one, it's a good idea to keep the drive's ventilation in mind.

Mac mini as an external hard drive for time machine??

I have a mac mini from a few years ago and it is never used. I was wonder if it could be used as an external hard drive for time machine. If this can be done how do I go about setting it up for this type of useage?

Thanks for starting this thread. I too am trying to use my old mac mini in target mode to utilize it's hard drive for Time Machine.
I hope to strip it down to just it's OS (10.5) and use the remaining hard drive space for Time Machine backup.
Is it possible to just have it running at certain times for regular back in target mode? Or do I have to keep it on constantly?
I fear having to restart using the "T" command each time. Isn't there a way to just have it sleep and then have the ability to wake it up as I backup or restore?
thanks in advance for any help.
Vince

How to reformat an external hard drive after time machine?

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