Protection of backups of two machines on one external hard drive
I have one external hard drive which I intended to use to back up two MacBooks owned by different family members. However, it seems that I can access all files on the other person´s backup on the external drive and vice versa, even if our data are protected with user accounts and passwords on our separate machines. Is there any solution to this problem?
You need to partition the drive and each of you should backup to your respective partitions from your computers. You should both be using different usernames and passwords.
Similar Messages
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How do I move data on time machine from one external hard drive to another
How do I move data on time machine from one external hard drive to another?
Although the documentation says you can copy Time Machine backups in the Finder, it's very slow and sometimes doesn't work at all.
Launch Disk Utility, open the built-in help, and search for the term "Duplicate." Follow the instructions. Turn Time Machine OFF in its preference pane while copying the volume. -
Two computers to one external hard drive problem, pram reset...
I have a Powerbook 15" 1.0 Ghz and recently I made the mistake of connecting one external hard drive to two computers. My OWC External hard drive was connected to my powerbook via firewire 800 and my PC via firewire 400 with both on. There is a tiny little blurb on the external hard drive's instructions that says do not connect to more than one computer at a time but of course I didn't see that until after the fact. My powerbook was painfully slow so I restarted but it wouldn't come back on. I was instructed to reset the pram, which I succesfully did but now the powerbook is so slow it is unuseable. The pc works fine. Did I do any permanent damage? Do I need to reinstall OSX or what? I will kill myself if I fried something on my powerbook. Please help!!
Disconnect all devices from your PowerBook as well as power and the battery for about 30 seconds. Put the battery and power back in/on and then reset both PRAM (3 consecutive times) and the PMU. Hopefull this'll bring it back to life.
Otherwise, create a new user account and see if things are better there. It is possible that you have damaged software rather than hardware so a clean instal may do the trick. -
How to use carbon copy cloner to back up two computer in one external hard drive
Hello,
I have only one external hard drive which is already used for backing up my old macbook. Recently, i bought a macbook air. Is it possible to use carbon copy cloner to backup my data from macbook air to same external hard drive? If yes, is there anything I should be caucious? If not, could you suggest any other software of other method to backup my macbook air? Thanks!!Yes, provided you have the space. You will need to create another partition on the drive to use as the backup volume for the new computer.
To resize the drive do the following:
1. Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
After the main menu appears select Disk Utility and click on the Continue button. Select the hard drive's main entry then click on the Partition tab in the DU main window.
2. You should see the graphical sizing window showing the existing partitions. A portion may appear as a blue rectangle representing the used space on a partition.
3. In the lower right corner of the sizing rectangle for each partition is a resizing gadget. Select it with the mouse and move the bottom of the rectangle upwards until you have reduced the existing partition enough to create the desired new volume's size. The space below the resized partition will appear gray. Click on the Apply button and wait until the process has completed. (Note: You can only make a partition smaller in order to create new free space.)
4. Click on the [+] button below the sizing window to add a new partition in the gray space you freed up. Give the new volume a name, if you wish, then click on the Apply button. Wait until the process has completed.
You should now have a new volume on the drive.
It would be wise to have a backup of your current system as resizing is not necessarily free of risk for data loss. Your drive must have sufficient contiguous free space for this process to work. -
I'm concerned that my iMac, purchased 5 years ago, is about the crash and I can't back up my files and programs to an external hard drive via Time Machine because the computer freezes after only a couple hundred MB and gets nowhere near the required amount.
How can I save these files and programs if the computer hard drive fails or has to be replaced without the backup being able to be done? I need to do something quickly, but I'm not sure what I can or should be doing.Get an external hard drive, some good ones that I like are the OWC, http://www.macsales.com Mercury Elite Pro drives...they are very good and reasonably priced.
Get the drive, connect via USB or FireWire, then use Disk Utility to format the new drive as Mac OS X Extended (Journaled), and then use Disk Utility to Restore the current drive to the new drive. Restore actually clones the drive so you will have a bootable backup on the external drive.
After you have formatted and named the external drive, click Restore in the main Disk Utility window, drag the name of the old hard drive to the Source box, and drag the name of the new external drive to the Destination box. DU will make an exact clone of the internal drive on the external drive.
That clone will be a complete backup of the operating system and all of your data.
You can test it by restarting the iMac and hold the Option key. That will give you a grey screen showing all bootable drives. Just click the external drive, then click the upward pointing arrow under it and the iMac will boot from that drive. -
Time Machine from one external hard drive to another
Hi, I just had the dreadful misfortune of spilling water onto my Macbook Pro over the weekend. It shorted immediately and it's currently drying with some rice. Luckily I was able to take the hard drive out! I already checked that all my contents are fine *whew*.
I bought an external hard drive enclosure to put the hard drive in (it has all my most up to date files). Let's call this poor guy the Enclosed HD.
I also have another external hard drive (La Cie) that I typically use to back things up. I haven't ran Time Machine in a while and really hope to do so ASAP.
I have access to another MBP and I want to use it to run Time Machine to back up the latest files from the Enclosed HD to the La Cie. How do I do this without the computer thinking that I want to run Time Machine with it's internal hard drive?
I appreciate any suggestions. Spilling water on my laptop has already been a nightmare for me the past two days.
THANKS!Although the documentation says you can copy Time Machine backups in the Finder, it's very slow and sometimes doesn't work at all.
Launch Disk Utility, open the built-in help, and search for the term "Duplicate." Follow the instructions. Turn Time Machine OFF in its preference pane while copying the volume. -
Problems with Time Machine backup for two machines to one external drive
I have a brand new WD 500GB USB My Book external drive plugged into my Intel Mac Mini running 10.5.1 to use as a TM backup drive (TM reformatted it to HFS+ journaled). The Mini's connected by ethernet to the Airport Extreme. It works great. I setup my wife's MacBook Pro 17" Dual Core 2 w. 10.5.1 for TM using the Mac Mini's TM backup drive and it works fine (a little slower at 811.n wi-fi speeds, but OK). I have the Mac Mini setup in Energy Saver to shut down at night and restart in the morning. The morning after I setup my wife's MacBook Pro for TM I found a big black & white message (in half a dozen languages) on the Mac Mini saying start up failed and I need to reboot using the power button. I did and everything was cool. Now comes the problem, it's done it three days in a row so it looks like there is a problem with the TM setup. It didn't do this before I setup my wife's computer for TM.
Any thoughts on what is causing this? We've had minimal problems with Leopard setup (short of a brief hunt for an Airport Extreme Drive and a couple of network printers during initial setup).1 mistake @ a time wrote:
I works fine over a network if the TM drive is attached to another Mac running Leopard. It won't work with an Airport drive (Apple deep sixed that feature in the final release).
We have an Airport Extreme base station, and we plan to add an Airport Express to boost the power to reach the second floor. We are ordering 4 iMacs, 20", plus I have the Macbook 13" that I have had for a few months.
We thought we could connect one large external drive via firewire cable to one of the iMacs and use it to back up all five computers via Time Machine.
Is that possible, or does everybody need their own external drive?
Thanks!
susan -
I have two MacBooks, both operating on different OS - Leopard and Snow Leopard. Can they both be backed upusing time machine onto one external hard drive?
J D McIninch wrote:
Actually, it does both. However, if you use two machines with the same name, it can pose a problem. If you mount the Time Machine drive and open the backup db directory, you'll note that the subdirectories are arranged by system name. The information about the ethernet MAC ID is in hidden files.
Yes, as posted, to the user it's confusing (and accessing your backups via the Finder is not recommended).
Time Machine knows which is which, and will back up each Mac to the proper folder. When/if you want to use the "Star Wars" display to view or restore from either Mac's backups, it will show the backups for the Mac you're on. -
I'm having some difficulty with Time Machine. It appears to be deleting backups from random dates on my external hard drive. I am not deleting them. Are they hidden and how do I prevent this from happening? Can I retrieve them?
... I didn't know that Time Machine was more a last resort back up instead of main back up.
Don't rely upon Time Machine to the exclusion of all else. I compliment Time Machine with a periodic "clone". TM is much better than nothing, but it's a safety net, not a hammock
Here is my understanding of Time Machine's file deletion algorithm, distilled from Pondini's FAQ, Apple's KB articles, and my own observations.
Time Machine deletes ("thins") files from the backup disk as follows:
Hourly backups over 24 hours old, except the first backup of the day
Daily backups over 30 days old, except the first backup of the week
Older backups get deleted when Time Machine requires space and you deleted them from the source disk.
Therefore, assuming TM has been performing at least one backup per day, backup files will remain available:
at least thirty days, if they existed on your Mac for at least a day
until you run out of space, if they existed on your Mac for at least a week
In addition to the above, Time Machine always keeps one complete copy of your source disk so that the entire volume could be restored if necessary. Any files that remain on your source volume will be present on the TM backup, no matter how old they are.
If you are using 250 GB of space on your source disk, its Time Machine backups are likely to require at least twice that much. A good estimate of the minimum required backup volume size would be about three times the size of your source disk - 1.5 TB in your case.
A more thorough explanation would require Pondini since he has plumbed Time Machine's mysteries far more than I have.
http://support.apple.com/kb/HT1427 -
Two very mobile laptops, one external hard drive, and iTunes?
I'm very sorry if this has been answered, but I've searched a lot and haven't quite found the precise question I'm asking...
My household has two iBooks (G3 and G4) wirelessly networked through an original Airport. Our music is completely digital, and we have no stereo. Each iBook has a different iTunes library. When we want to play the G3's music, we connect the G3 to a good set of speakers (pretending to be a stereo) through the mini jack. Same for the G4. This would be fine, except we're both running out of internal hard drive space.
So, what we want to do is buy one external hard drive, both store our music files on it, and play music. A new drive in the mid-range should tide us both over till we can afford new computers.
But this has raised a whole host of questions:
1. How do we share a hard drive when we both have laptops that move about the house all the time? Sometimes the G3 sits on the desk playing music while the G4 sits on the couch checking email, and vice versa.
2. Can we set up just one iTunes library on the hard drive that is fully accessible to whichever computer is connected to it, both in terms of playing and in terms of updating?
3. But wouldn't that be terrible, anyway, because I couldn't sit on the couch and download new music into my iTunes folder automatically?
4. And this leads to what I really, really, want, which is an external hard drive that is independently wirelessly accessible by both computers.
5. Which in turn leads to the true wishlist, which is to be able to use AirTunes too. Then I could sit anywhere, access a shared library on either computer, and then stream it to my stereo.
Is any of this possible? Am I missing the forest for the trees? Is there some big picture that I am just not seeing? I just want both computers to be mobile, to each have more space to store music, and each still be able to play that music without the other one having to be involved.
Thanks a bunch -- Discussions is one of my favorite places to lurk for hours.
- Kendra
(BTW, I'd upgrade my Airport if it helped, or buy an Express. And I've seen a lot on Sharepoints, but am not sure if that's what I'm looking for.)Well to answer several questions at once, there are Ethernet (aka Network) Hard drives you can buy that hook up via ethernet. you could plug it in near your router and then plug the ethernet cable into one of the Router's ethernet ports and set up a network drive. It doesn't have to be connected directly to a computer. Here are two examples (shop around for price, size and features)...
http://shop3.outpost.com/product/5031245?site=sr:SEARCH:MAINRSLTPG
http://shop3.outpost.com/product/3945658?site=sr:SEARCH:MAINRSLTPG
Patrick -
How can I backup my iPhoto Library to an external hard drive and keep my photos grouped by their events?
I have attempted to make sure my iPhoto library has been backed up on the external hard drive and that it is safe to delete some events from my internal hard drive
You need to think this through.
Time Machine is a back up application. It keeps a rolling back up of the data. It's called rolling because it means you can revert to the data you had on a specific date and time. But that's not eternal, and as time goes by, and your drive fills up, older backups are deleted. So if you delete Events on your Mac they will - eventually - also be deleted from the Time Machine back up.
If you wan tot archive data hendon't use Time Machine for that job. Here's how you might archive an iPhoto Library:
Make sure the drive is formatted Mac OS Extended (Journaled)
1. Quit iPhoto
2. Copy the iPhoto Library from your Pictures Folder to the External Disk.
Now you have two full versions of the Library.
3. On the Internal library, trash the Events you don't want there
Now you have a full copy of the Library on the External and a smaller subset on the Internal
Some Notes:
As a general rule: when deleting photos do them in batches of about 100 at a time. iPhoto can baulk at trashing large numbers at one go.
You can choose which Library to open: Hold down the option (or alt) key key and launch iPhoto. From the resulting menu select 'Choose Library'
You can keep the Library on the external updated with new imports using iPhoto Library Manager -
How can I backup my MacBook Pro to an external hard drive
How can I backup my MacBook Pro to an external hard drive?
Basic Backup
For some people Time Machine will be more than adequate. Time Machine is part of OS X. There are two components:
1. A Time Machine preferences panel as part of System Preferences;
2. A Time Machine application located in the Applications folder. It is
used to manage backups and to restore backups. Time Machine
requires a backup drive that is at least twice the capacity of the
drive being backed up.
Alternatively, get an external drive at least equal in size to the internal hard drive and make (and maintain) a bootable clone/backup. You can make a bootable clone using the Restore option of Disk Utility. You can also make and maintain clones with good backup software. My personal recommendations are (order is not significant):
1. Carbon Copy Cloner
2. Get Backup
3. Deja Vu
4. SuperDuper!
5. Synk Pro
6. Tri-Backup
Visit The XLab FAQs and read the FAQ on backup and restore. Also read How to Back Up and Restore Your Files. For help with using Time Machine visit Pondini's Time Machine FAQ for help with all things Time Machine.
Although you can buy a complete external drive system, you can also put one together if you are so inclined. It's relatively easy and only requires a Phillips head screwdriver (typically.) You can purchase hard drives separately. This gives you an opportunity to shop for the best prices on a hard drive of your choice. Reliable brands include Seagate, Hitachi, Western Digital, Toshiba, and Fujitsu. You can find reviews and benchmarks on many drives at Storage Review.
Enclosures for FireWire and USB are readily available. You can find only FireWire enclosures, only USB enclosures, and enclosures that feature multiple ports. I would stress getting enclosures that use the Oxford chipsets especially for Firewire drives (911, 921, 922, for example.) You can find enclosures at places such as;
1. Cool Drives
2. OWC
3. WiebeTech
4. Firewire Direct
5. California Drives
6. NewEgg
All you need do is remove a case cover, mount the hard drive in the enclosure and connect the cables, then re-attach the case cover. Usually the only tool required is a small or medium Phillips screwdriver. -
I cannot copy my doc and photos and videos from one external hard drive to a second external hard drive -- both plugged in to my MacBook Air -- I get Error 8062 and the copying (which seemed to be going on for 10 minutes) stops and nothing gets copied.
As any Macbook Air owner knows, there is SO LITTLE storage capacity on the computer that you have to back up big files onto an external hard drive to avoid getting the other annoying error that says you have no more memory/storage capacity/whatever the proper term is, and you cannot use the computer.
Backstory: Before this error cropped up, I had backed up lots of files to an external drive and then removed them from my computer. But then the external hard drive got corrupted and I could not access my entire photo library. Had to pay $850 to Kroll Ontrack to recover those files. I have now bought 2 new external 1 Terrabyte hard drives as protection against another such disaster. BUT I cannot copy the files from the first hard drive where all my reovered files now sit, to another backup hard drive.
Feeling vulnerable. Please help.
SusaninNYFrom the menu bar, select
▹ System Preferences ▹ Energy Saver ▹ Power Adapter
and uncheck the box labeled Put the hard disk(s) to sleep when possible, if it's checked.
If the drive has more than one interface (USB, FireWire, Thunderbolt, eSATA), try one of the other interfaces.
Check that the data cable is securely inserted at both ends.
Try a different cable.
If you're connecting the drive through a hub, connect it directly to a built-in port on the Mac.
If you're connecting it directly, try a different port.
Disconnect all other devices on the bus, or as many as possible.
Test the drive with another Mac. Test another drive with this Mac.
If the drive is bus-powered, but has an AC adapter, connect the adapter.
Start up in Safe Mode and test.
If the drive doesn't work under any of the above conditions, and if another drive does work with the same Mac, then the drive has failed. You may be able to salvage the mechanism by removing it from the enclosure and installing it in another one, or in a drive dock. -
Can I use one external hard drive for 3 of my Macs?
I have a 2007 white MacBook, a 2011 MacBook Pro, and a 2013 MacBook Air.
I want to be able to transfer all of my precious family photos off of my MacBook and Macbook Pro onto an external hard drive and then wipe those computers clean, and then I want to be able to backup and wipe clean my Macbook Air so that I can update it to Mavericks.
Can I use one external hard drive to do this for three of my Macs? Will it be compatible with all of them? And will I still be able to use the hard drive with my Air once it is updated to Mavericks?
Which hard drive do you recommend?1. Yes. Note that anything you want to keep should be on at least two drives in case one of them fails.
2. Yes.
3. Yes.
(110959) -
Can't get LR3 to import photos from one external hard drive to another?
I'm wanting to move thousands of raw photos from a folder in one external hard drive to another folder in a different external hard drive so all my photos are in one photo folder instead of two. I've gone through the importing routine inside of lightroom to move the folder over to the new hard drive. However, the photos don't move because they still show up on the old hard drive and not the new one. What's weird is when I try to import it again, the grid view shows all the photos I'm wanting to import and when I move my cursor over any of the photos they are faded out and it says the photos are already imported. However, if this is true why aren't they showing up in the new folder on my new external hard drive? I know the new external hard drive works fine because I've successfully been putting all my newer photos there since I started using LR about one year ago. The one's I'm trying to move over are older photos I shot try to using LR.
I'm stumped and need some help. Thanks in advance.You wrote
"Are you saying while I'm in LR just grab the folder I want to move and drop it into the new hard drive"
Yes, that's the way to move photos & folders from within LR.
LR will then update its catalog with the new location and everything should be fine.
Importing is not a good way for moving photos / folders. Since the photos are already in the catalog you had to uncheck <Don't import suspected duplicates> or all the photos will be greyed-out in the import dialog. If you did that LR would import the photos from drive A and put it on drive B. But they would still be on drive A, so you'd have the photos on both drives and would have to delete them on drive A.
But more important: By default LR saves all edits in the catalog, they are not saved with the images themselves. That means by doing an import instead of a drag-and-drop move you'd lose your edits.
You can save your edits to xmp, a side-car file that is stored together with the image file, and the xmps would be imported. But LR does not store everything as xmp. For instance Virtual Copies, Collections, Stacking are saved only in the catalog, so by doing an import you'd lose these things.
Unless you know LR very well, it's best to use the Import Feature only for images that are NOT yet in LR.
And another thing: Before doing major operations like moving big amounts of photos, it's best to backup your catalog first.
WW
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