OS X :: Encrypting External Disk And Backup On Second External Disk
Jan 5, 2011
As I have a MBP 17" and a MBA Ultimate 11.6" I have copied all data that I need onto a 1 TB external disk and made 4 partitions on it, one for each type of data ( movies/music, data , software etc etc ). 1. I want to password lock/encrypt it yet be able to access it from both laptops as regular data would be.2. I want to create a backup of the 1 TB disk above, on to another 1 TB external disk and make it encrypted/password protected also. Maybe follow the partition structure maybe not, thats not paramount.What's the best way (apart from .dmg file) to achieve this given the data on disk in point 1 will change often as I create/edit more files.
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Apr 30, 2012
I have a external HD which has always worked fine under snow leopard. Since upgrading to lion I keep getting the following message The identity of the backup disk has changed since the previous backup.The disk may have been replaced or erased, or someone may be trying to trick your computer into backing up to the wrong disk. And after this the drive disappears from the desktop appearing agian only after restart. What can I do do rectify this? Delete and re-intialise the drive?
Info:
MacProQuad2.6 4gbRam, Mac OS X (10.4.8)
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Feb 28, 2012
I had some bad experiences in the past with my first MacBook Air (version 2.1) in which external drives kept getting erased without any good reason. I think it's due to the fact that I had to connect a USB cord to another computer when I had an external drive plugged into the MBA because the MBA could not power it on its own.
I thought it was due to a bad external drive and I took it to Samsung service center and complained that their drive was malfunctioning. I got a refund. But later on, I found that the same thing happened to another external drive and to a USB flash drive, so I realized that it had nothing to do with the external disks and something to do with the computer. I used the same drives that got erased on a newer MacBook Air (version 3.2) and I never had the sudden erasure problem.
Anyhow that's the background to why I want to make a clone of the external disks in my possession. If for some reason, the external disk gets suddenly erased, I would like a copy somewhere in safekeeping so that I do not lose all my movies.
How do I make a clone of an external disk?
I will be using a MacBook Air (3.2) for this task. It has two USB ports. Can I use Carbon Copy Cloner to do this? Just choose a source disk (external disk I want to clone) and a destination disk (the external disk where I want it to be cloned to)?
Info:
MBA v 3.2, 256GB SSD, 2.13GHz, 4GB, Other OS, 10.6.8
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Mar 17, 2012
I need to deploy multi iMac for my company with exact same setup.I am able to do this with the Time Machine without problem.But I would like to know is there a way to backup the "Time Machine" USB HDD I have created, just incase my USB HDD is corrupted or I need to distribut the Time Machines to other office for deployment? Can I create a dmg file with my existing Time Machine USB HDD. so that I can make multi copy of USB HDD with the same dmg by restoring the dmg?
Info:iMac
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Jun 28, 2014
Decided to encrypt my external backup drive. Instead, I essentially doubled my memory by duplicating my external hard drive and adding it to my MacBook. Now my startup disk is full and I'm stuck. I also have Time Machine but not sure how to restore (replace?) my Mac storage to what it was two hours ago.
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Sep 12, 2014
Time Machine reported it failed backup due to the shortage of disk space. But I see the total space of partition is 192GB，the whole backup snapshot estimated is 177.56G.
The massage said that " failed backup, 52.85 GB is needed for backup but it's only 25.17 GB available."
I know it's 166.35GB of ancient snapshot still exist, but why not OSX to delete it automatically and release more space for new snapshot?
By the way, I can't delete those ancient snapshot in Finder manually, perhaps permission denied.
Info:
MacBook Pro (Retina, 13-inch, Late 2013), OS X Mavericks (10.9.4)
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Apr 24, 2012
I have a 2TB Western Digital My Book Studio FW800 external that has 5 partitions, connected to my 2011 iMac. I had help doing the partitions and don't really remember the reasoning, but one is just for my SuperDuper! backup, one is Miscellaneous, one for movie clips off my camcorder, one for misc scanned photo's and one for my genealogy research. I back up using Time Machine to a Time Capsule and also to this WD hard drive with SuperDuper!
Recently I'm getting a pop up message that "Mac OS X can't repair the disk "Genealogy"'. And it needs to be reformatted. It's become a read only disk. When I look in Disk Utility it shows all the partitions as "Mac OS Extended (Journaled)" EXCEPT for the one in question. I also noticed that there are a lot of files with "date created" being the same date in 1969! These files may be letters I've written or photo's I added to that partition within the last few years.
I think I have to completely reformat the entire external hard drive to repair this, but I want to make sure. Because it's going to be a major hassle backing it all up to another external (having to get one first) and then figuring out how to make the files that have turned "read only" in that one partition, back to their original state! Does this sound right, that I have to reformat the entire external hard drive? And how do I get the read-only files back to their original state.
Info:
iMac, Mac OS X (10.7.3)
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Feb 15, 2011
Recently I purchased an external hard disk, to put all of my pictures of my baby due to space limitations on my internal laptop drive. Since my Canon camera 10 megapixel pictures take up a ton of space this was occurring at an alarming rate. My intention was also to back up to DVD but never got to it. This is both a comment and a question.
Now said baby, is getting really good at pulling cords etc. He managed to do this on the external drive firewire cable. As far as i know the drive was not in the process of actually writing. However, after a few minutes and trying to re-plug the drive the OS crashed with a Grey Screen of Death hardware error that tells you that you need to push the power button..
This apparently corrupted the drive's directory. Upon reboot the drive would not mount. Since there were time machine backups on the drive too Diskwarrior was not able to reconstruct the drive in the built in memory available on the computer. Time machine stores millions of files and Diskwarrior apparently wants to keep it all in memory at once. Since my computer has 2GB you would hope that would be enough but apparently not. So that failed. Other utilities seemed to be able to find the files but not restore the directory. I also took it to the apple store they were not able to recover it.
I have to say this is extremely distressing, and hard to believe that a simple accident like this could cost the loss of thousands of pictures. I did send it to a rescue company but that was expensive but I think apple needs to do something about this situation.
On Windows there is a way to disable the write cache for external drives. This is not available for Mac OS X. This would prevent this rather common occurrence of a plug accidentally becoming disengaged when the drive is not in the process of writing. This reduces the odds but I still think apple, in order to become clearly superior, needs a better solution.
I know Apple has experimented with ZFS would this not eliminate this possibility of this kind of disaster? Is this in Snow Leopard desktop? I know they are thinking this is a business customer focused technology but clearly if it can eliminate this kind of thing then I think it is extremely useful to their non server customers. Perhaps there are other ways of dealing with this issue but ZFS is designed to deal with these issues. HFS+ is extremely fragile to disk corruption.
I know my situation is not that uncommon and this is not the first time this has happened to me with an external drive. You would think I had learned. I hate to think of how many other people have had the same thing happen to them.
Information:
MacBook Pro
Mac OS X (10.5.8)
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Feb 15, 2011
I've download a Seagate Diagnostics programme to check whether my external Seagate FreeAgent Desk is working properly or not. However, when I run the programme, it indicates that cannot find the disk.
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Jun 27, 2014
I have a Seagate 1 TB Backup Plus Drive which was working perfectly fine until I plugged it into a USB hub. It detected it while in the hub and I was able to get files off of it, but when I ejected it from the hub and put it back into the USB slot on the computer it was not detected by finder. It shows up in the disk utility and I clicked verify and repair and it says:
Verify and Repair volume “Seagate Backup Plus Drive”
Checking file system
Volume repair complete.
Updating boot support partitions for the volume as required.
Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.
Is there any way to get this to work properly again? Or if not is there a way for me to recover my files on the external hard drive?
I have a Macbook PRO late 2011 running OS X Mavericks.
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Sep 7, 2009
Anyone knows why my external HD (USB disk connected to Airport extreme) does not show up in disk utility? (It sits on my desktop just fine and is fully functional) I' want to erase a partition but now i don't know how.
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Aug 6, 2010
I have an external 500GB Freecom USB HDD with two Data partitions on it (FAT32 and NTFS). With a Windows tool, I made the two partitions smaller in order to free up some space (ca. 200GB) for an additional Mac OS Extended (Journaled) partition. This partition I wanted to create with the Mac OSX 10.6.4 Disk Utility. When I pluged in my USB HDD in my new iMac it mounted the two partitions, NTFS and EXT32 and the Disk Utility tool also showed the free (unpartitioned, almost 200GB) space on the HDD. Then, I chose to create a new Mac OS Extended (Journaled) partition and let the tool do it. ...which I probably shouldn't have done. Disk utility stopped and showed an error message saying that it cannot read the partitions anymore and that it needs to be closed. No partitions can be mounted anymore since then on this HDD. Here is the logfile entry of Disk Utility (unfortunately, it's in German):............
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Dec 11, 2014
I recently upgraded to Yosemite and now have to enter my password every time I boot up with I find annoying. It seems I need to disable FileVault to solve this problem but when I try I get a message ' FileVault is encrypting the data on your disk. Wait until your disk is fully encrypted before turning off fileVault'.
Info:
MacBook Pro with Retina display, OS X Yosemite (10.10.1)
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Jun 17, 2009
I have an 08 mac dual quad and wanted to ask if i could boot my computer from an external instead of having the disc as an internal?
that way i can use the 4 bays for terra byte action and run a raid of sorts without having one bay for the OS.
also if i can do this could i also install boot camp on another external to run my boot camp partition from an external as well?
or can you run parallels or fusion from the same disc as the mac OS at the same time?
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Aug 19, 2008
When I try to format my Western Digital "MyBook" external drive, I get an error. It says "could not unmount the disk." What does this mean, and how do I fix it? Also, what's the difference between Mac OS Extended (Journaled) and not journaled?
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Sep 23, 2008
For no apparent reason, my external HD MyBook 500GB has decided to stop working. Everytime I plug it via firewire, an error message pops up - "The disk "my book" was not repairable by this computer. It is being made available to you with limited functionality. You must back up your data and reformat the disk as soon as possible". Here lies my problem, I'd gladly reformat it, if it weren't for the fact I don't have anywhere to "back up my data" to! I've got a 1st gen Macbook pro with only 10G spare on the HD, the external HD has 300gb worth of irreplaceable material.
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Jun 26, 2009
I'm planning on buying an external firewire 2.5 disk, and i am wondering if there is any real difference between firewire 400 and 800 if the disk is 5400 rpm speed. The reason i am asking is i cant find the passport studio with firewire 800 anywhere here where i live, only the firewire 400 version.
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Aug 15, 2009
I've been having trouble with my Western Digital 160GB HD, its one of the MyPassport ones or what not. It used to work like a charm and had for a while but a couple of days ago it just stopped being able to be read or even recognized on Macs. I tried this laptop and another macbook pro and both would not show the HD on the desktop or even Disk Utility. When I open the Disk Utility when the ExHD is plugged in, I just get that loading circle and it will just do that indefinitely. Same thing with System Profiler as well.
I don't believe I damaged it in anyway, I hear no clicking and it seems to "boot" smoothly when it's plugged in, so would this mean its a corruption issue? I have been plugging this in to different Macs recently, (3 total) and one of which runs Leopard while the other two run Tiger. Would that cause the issue? (the reason I ask is that this all started after I had plugged it into the different OS.) I haven't tried to plug it into a PC yet, i'm going to do that today but I had tried doing the CMD + Option+ P + R reset till the second beep and I also did a hard reset by unplugging everything and waiting a bit then holding the start button down until it beeps.
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Apr 27, 2010
I got a 500GB WD external disk for my MBP 2.2GHZ/2GB/500GB which with up-dated Snow Leopard and Windows XP pro(Boot camp). Here's wot happened and my probs:Last Tuesday I used the external disk with no problem. But on Friday the external disk is unable to be founded by MBP either in Disk Utility or Finder. I tried to switch to Windows XP where I installed MacDrive to read Mac partition under windows. The system says it cannt install the disk coz device unrecognizable. First I suspect it 's the problem with external disk enclosure but when I replaced it with another new one, problem stay still.
So here's some questions, First, is there any instruction I can take to solve the issue, or if the disk unfortunately crashed any possible chance I can rescue the data (My vital working data achieve is inside) using application or else.
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Apr 12, 2012
My disk drive on my MacBook 5,1 (model #A1278) is bust. It will not accept a dvd/cd at all, it won't let it in...not an inch! seems like it's stuck in eject? as if there is a disk inside but as far as i know there is not. Nothing i have tried makes any difference. So i am wondering if i can buy an external disk drive, but this info is not obvious to me on the Apple Store website!
Info:
MacBook, Mac OS X (10.5.8)
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Jun 20, 2012
I have a new Macbook Pro with a retina display that won't mount a Toshiba Canvio 3.0 Plus external 1TB drive. The drive shows up in the System Report under the USB tag. However Disk Utility does not see it. The drive shows up and is able to be erased and partitioned and mounted with another Macbook Pro running 10.6.8. So, the drive itself is good. how to get the drive to mount on the new Macbook Pro?
Info:
MacBook Pro (Retina, Mid 2012), Mac OS X (10.7.4)
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Feb 26, 2008
When I mount an external disk, I can add it to the Spotlight privacy pane and all is well; Spotlight will quit indexing the drive. However, if I unmount/mount the drive or reboot/mount the drive, Spotlight starts indexing the drive all over again and I have to add it to the privacy pane again. Is there a way to make Spotlight permanently "forget" an external drive?
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Jan 2, 2009
I've bought three over the last two years, and only one of them has lasted longer than 18 months. I think one of them may have been damaged in a fifteen hour flight, but it still works (albeit too slow to the point that it's unusuable.) My .5 TB monster just died last week, which had almost all of my video files from the last year, totaling 300 GB in data loss. What can I do to avoid such situations? Should I maybe get a 1 TB disk for everyday use to replace my .5 TB disk, then a 2.5 TB disk (or bigger) just for backups? What sort of backup software should I use? (not Time Machine, I'm not interested in backing up my entire computer several times, just my FCP files.) How long do external hard disks last for you?
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May 21, 2009
I'm trying to format my external harddrive with disk utility to Mac OS Extended (Journaled) but it keeps coming up with this error.
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Jul 28, 2009
I am desperately trying to burn a ISO file to a USB and external HD but Disk Utility does not want to. Instead I get the error message "Could not validate source - error 254". So there must be a problem with the source which is the ISO file.
I already tried setting the Partition Map Scheme to both Master Boot Record and GUID Partition Table. I also formatted the drive to FAT and HFS+. I cannot find the cause of this error. It clearly looks like Disk Utility does not like burning ISOs to USBs or HDs.
However, I really really need to this since I cannot burn ISOs with my SuperDrive which is also a common problem [URL]with my MacBook Pro.
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Aug 15, 2009
I know this has been disccused ad nausium many places, but in reading 100s of posts Ive just confused myself and was hoping someone could help me make sense of all I've heard.I have a ibook g4 and use a WD 500gb external hard drive to keep all my music/pictures etc.Last night when I was moving files around (I dont think it was actually in the process of transferring files when this occurred, but there is a slight chance it was) I accidently hit enter instead of shift which told my computer to open all of the 1000+ folders that I had selected (DOH!) after working for an hour it seemed to be all frozen so with concern I turned the computer off and restarted.Suprise suprise, my external will no longer mount. - Disk Utility recognizes it but says there was an error on exit.Tim
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Sep 12, 2009
I installed SL two days ago and my LaCie firewire external has been working fine. i put it to sleep last night, and when I woke it up today, I got the warning telling me that I had disconnected it improperly (Which I hadn't, because the computer was asleep and the drive never was turned off). This has happened before and I usually am able to shut it off then turn it on again. But this time it won't mount. It shoes up in Disk Utility and System Profiler, but not in the Finder.I have tried switching firewire ports and restarting but to no avail.
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Sep 22, 2009
how to tell my macbook pro (tiger os x 10.4) to read my new Lacie external dvd/cd-burning drive in order to burn a dvd, rather than the current internal apple one (which came with the mac upon purchasing and recently went kaput)? btw, I CAN see this Lacie's name-path when I go into the apple-icon's "about this mac/more info". Then, I can see the lacie drive's name-path either by accessing the Hardware's option of "FireWire" or "Disc Burning".
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Sep 28, 2009
My intention is to partition an external HD in half allowing it to serve as a backup for a pc running windows xp, and the other half as a backup for a mac(10.5. I am using a Seagate external HD(new) that was initially partitioned on a windows xp computer.
The 1st half of the 1TB HD was formatted in NTFS format, and the second half was erased and (I thought) reformatted in HFS plus but when I attempt to use CCC(Carbon Copy) to copy the mac 1/2 of the hard drive, I get this message:
"You may have difficulty booting from this target volume, the underlying disk is not formatted with a partitioning scheme that Apple recommends for Intel Macs."
I have read the recommendations that the external HD need to be partitioned with APM or GPT, but I cannot seem to get to that option now for the mac side of the external HD.
In the Disk Utility, the external HD shows both sections of the partitioned drive(the xp section and the leopard). I do not want to reformat the entire drive(both sections) if at all possible.
I just want the Mac side of the ext drive to be properly prepared for CCC, and the windows side to remain as is.
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Nov 7, 2009
i just erased my external hard drive through disk utility my accident. I had VERY important files and the 1tb was full.
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