Keeping some files ONLY on the external drive

I'm ashamed to say this, but I've never used a back-up utility before.
But I just bought my first HUGE external drive, a WD 2TB My Book Essential, so I'm ready to start being a responsible computer user.
But I want to keep my Pictures & Movies on the external drive ONLY.
So, if I run Time Machine, and then clear the pics & flicks off my internal drive, is that gonna cause problems with subsequent back-ups?
Please forgive me if it's a stupid question. Thanks in advance.

Yes, at least 600 GBs. It's because TM adds new data to the backup each hour it backs up. Over time the backup uses more and more disk space. As the drive fills up TM prunes away files you may have deleted from the internal drive to allow space for new backups. See,
About TM "Backup Drive is Full" Alert
TM only deletes older files if they have been deleted from the source and when TM needs space on the backup drive for a new incremental backup. Time Machine "thins" it's backups; hourly backups over 24 hours old, except the first of the day; those "daily" backups over 30 days old, except the first of the week. The weeklies are kept as long as there's room.
So, how long a backup file remains depends on how long it was on your Mac before being deleted, assuming you do at least one backup per day. If it was there for at least 24 hours, it will be kept for at least a month. If it was there for at least a week, it will be kept as long as there's room.
Note, that on a Time Capsule the sparsebundle grows in size as needed, but doesn't shrink. Thus, from the user's view of the TC it appears that no space has been freed, although there may be space in the sparsebundle.
Once TM has found it cannot free up enough space for a new backup it reports the disk is full. You can either erase the backup drive and start your backups anew or replace the drive with a larger drive.
By making the backup drive large enough you should be able to avoid the disk full problem. Trial and error has shown that making it at least twice the capacity of the internal drive allows for adequate space over time, although eventually you may find that you will run out of space anyway. You can minimize the problem by not backing up system files (this is a TM option,) virtualization software pseudo-drives, Microsoft User Data folder, other connected drives or volumes, for example, help to avoid excessive and unnecessary backup data.
For more information see User Tips for Time Machine for help with TM problems. Also you can select Mac Help from the Finder's Help menu and search for "time machine" to locate articles on how to use TM. See also Mac 101- Time Machine.

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I am using a T61 ThinkPad with an external hard drive and my itunes library keeps disapearing but remains on the external drive. Any idea how to fix this so my music doesn't disapear all the time? It's a real drag pulling music back into iTunes each week.

I am using a T61 ThinkPad with an external hard drive and my itunes library keeps disapearing but remains on the external drive. Any idea how to fix this so my music doesn't disapear all the time? It's a real drag pulling music back into iTunes each week

In iTunes 11 uncheck the preferences setting in in the iTunes Preferences panel "Advanced > Copy Files to iTunes Media folder when adding to Library"

I have my iTunes Library on and external hard drive. I have a new computer and want to use iTunes and KEEP my files on the external drive.

My iTunes library is on an external hard drive, and I was able to access / add to the library from my windows laptop.
I now have a new laptop, and want to be able to KEEP the library on the external drive while being able to use iTunes from the new laptop.
I have selected "choose library" in iTunes, and have chosen the iTunes Library.itl file on the external drive.
My media populates in iTunes on the new laptop version of iTunes, but when I click on a song iTunes says that it cannot locate the song.
Your help is kindly appreciated!

Thanks. Were the settings shown in your last screenshot in force when you added the song that's shown on being on the C: drive? It is also possible that at some point you ran iTunes with the external drive disconnected, in which case it will have defaulted to the library on the C: drive, or that you've run iTunes without explicitly selecting the library on the E: drive. To make sure the latter is the case, hold down SHIFT while starting iTunes, then when you get this prompt:
click on Choose Library..., navigate to the location of your current iTunes Library.itl file, and click Open.
Part of your issue may that its not obvious where that current database file is located. The folder layout on your E: drive isn't the one that's most easily managed - so its possible that the database file could be in:
E:\xxxx\Files\iTunes
E:\xxxx\Files\iTunes\iTunes
E:\xxxx\Files\iTunes\iTunes 1
I suggest that a lot of your issues can be addressed by reshaping your library into the reliable "portable" layout as described in tt2's Make a split library portable user tip. Comparing your screenshot with the equivalent on my system (where I have a "well-formed" library on an external drive):
where:
there is just one iTunes folder with everything used by iTunes inside it
all media is held within subfolders of the iTunes Media folder
The way you have yours set up, where the iTunes Media Folder location is set to E:\xxxx\Files\iTunes rather than E:\xxxx\Files\iTunes\iTunes Media is probably why some of your media is not being located correctly - the extent to which iTunes can correctly resolve locations is, to an extent, reliant on the folders for the different media kinds (Music, Audiobooks, etc.) being inside the iTunes Media media folder. One common misunderstanding (not helped at all by Apple's documentation!) is that the iTunes Media Folder location setting in Edit > Preferences > Advanced does not tell iTunes where to find anything; rather it determines where iTunes will put new additions to your Library, in conjunction with the Copy files to iTunes Media folder ... flag:
I would definitely take the time to work through the steps to bring your library into the "portable" shape - there may be few remaining issues with broken links when that's complete but this will be much easier to fix if your library is in a more standard structure.

Trying to backup one of my iPhoto libraries I keep getting a error message that basically says that the file could not be backed up because there is another file on the external drive with the same name, etc. There is no other file.

While trying to copy one of my iPhoto libraries to an external hard drive I get the following error message "You can’t copy “iPhoto Library old” because it has the same name as another item on the destination volume, and that volume doesn’t distinguish between upper- and lowercase letters in filenames." There is no other file on the external drive with this name. I have asked this question before and was told that there are some duplicate photos (files) in my library and I needed to go to "show file contents" and look at certain files to find duplicates and delete the duplicates. I did all of this and the library will still not copy and always stops copying in the exact same place on each attempt. Any help would be greatly appreciated.

You've been deleting your actual Photos.
Don't change anything in the iPhoto Library Folder via the Finder or any other application. iPhoto depends on the structure as well as the contents of this folder. Moving things, renaming things, deleting them or otherwise making changes will prevent iPhoto from working and could even cause you to damage or lose your photos.
Best way forward now is to recover the surviving Originals from this library and start over from scratch.
Regards
TD

I have a macbook air late 2010 and keep getting a warning that my hard drive is full and to delete things so I purchased a external hard drive (1TB) but I'm just not sure what the correct way to transfer and store files to the external drive is. First MAC

I purchased a macbook air about 5 months ago and lately i keep recieving a warning that the hard drive or disk is full and that I will need to move items to trash in order to free up space on it. I purchased a external hard drive 1 TB but I'm very new to mac and ios and unsure as to how I'm suppose to transfer my files (video, pics, music etc.) from my mac over to the external hard drive in the correct way so I won't end up deleting them permenately or screwing anything up with my mac as far as the applications and programs being able to run. Am I supposed to just copy to the external hard drive and then move to and empty the trash? That's pretty much all I could come up with, but then what if i need or want to access that file again at a later time. Also, I have an i Phone and i pad so with i cloud it automatically syncs all my purcheses and if i delete something from itunes on my mac it deletes from my ipad.
I'd appreciate any kind of input i think im just a little lost here. I have to say i love my Mac and wouldn't trade it for anything (except maybe a macbook pro w/more memory)... Is there something I'm missing???

To free up hard drive space the best bet is to move data files that you don't need access to all the time. Likely candidates are music, video, and photos. Things like word processing and spreadsheet files can also be moved but they tend not to be very large and so don't free up much space. The problem with moving the above mentioned files is that iTunes and iPhoto need to know where the files are stored.
Here's an article explaining how to move the iTunes folder. You can move the iPhoto library using the Finder but there is a slight complication. Start iPhoto, open the Preferences and click on the Advanced tab. The first option is "Copy items to the iPhoto Library". If this option is checked, copy the iPhoto library to your external folder (drag it from the Pictures folder to your external drive) and then delete it from your Picture folder. If this option is not checked, it is a bit more complicated and we'll need to talk a bit.

Xml file only recognizes the mp3's that were on the C Drive

I have a lot of music and i keep some of it on my C drive, some of it on my D drive (data) and some on an external hard drive. i had to reinstall windows and when i imported my itunes music library xml file it only shows me the music that was on the C drive. I can import the other music into the library, but i'll lose my ratings. is there anything i can do?
thanks,
Justin

DBG413 wrote:
Any suggestions on why my XP laptop cannot view the mac info on the HD.
you'll have to install e.g. MacDrive or HFS+ for Windows on your winsloth machine.

How do I boot from an external hard drive if my MacBook Pro only recognizes the internal drive?

Hi there, I recently got the white screen of death (w/ circle slash) on my 13" 2009 MacBook Pro. Most people are saying that it is hard drive failure, so I am trying to boot it from an external hard drive to save some of my data before having it repaired. Unfortunately, every time I press "option" while it boots, it only shows the internal drive on the grey screen. I have my external drive connected, but it won't recognize it. What should I do?
Thanks!

Welcome to the Apple Support Communities
You can only start from an external drive if OS X is installed there. If not, it won't appear as a bootable volume because there isn't any operating system inside it.
As you have a Mid 2009 MacBook Pro, it's better to start from the Mac OS X disc that came with your Mac. Insert it and hold the C key while your Mac is starting. After starting, go to Utilities menu > Disk Utility, select "Macintosh HD" in the sidebar and repair it. If you can't get it repaired, take the computer to an Apple Store.
If the hard drive can't be repaired, the only option to recover your files is to use an application as DiskWarrior, but it's expensive and it's not sure that it will work, because it may fail

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I'm attempting to migrate files, address book, maile, etc to my new Mac Mini using an external hard drive and Migration assistant. I followed the instructions on using Migration Assistant to do this but Migration Assistant is not seeing the external drive, which is displayed on my desktop

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I saw a hint on one of these posts that the icon that you see and is label Macintosh HD is actually your backup disk and it is telling you that it has a copy of your internal Macintosh HD. I went ahead and told it to continue and it started to restore my apps, settings, and documents. It's been going for a couple of hours, and is close to being done. I expect to see my old system restored when it is finished.
Wish that Apple would put some type of note that it is seeing the backup. That is most confusing and seems to be a problem for lots of users.
It's been a month or so since your post Did your get it to work?

Since my G5 died I was thinking about getting a Mac Mini, but I have a ViewSonic Monitor (from 2004) and a USB keyboard and mouse - I also have the external drive tha downloaded my files on to. Do you think the monitor, keyboard and mouse will work on it?

Since my G5 died I was thinking about getting a Mac Mini, but I have a ViewSonic Monitor (from 2004) and a USB keyboard and mouse - I also have the external drive that I downloaded my files on to. Do you think the monitor, keyboard and mouse will work on it? Would I have to get a hub so I could use the stuff I already have? Is that viewsonic too old to work on it?
What else would I need? Please advise...

Yes for keyboard and mouse.
The monitor will work if it has an HDMI, VGA ir DVI input. If it only has a VGA input you will need this adopter
http://store.apple.com/us/browse/home/shop_mac/mac_accessories/cables/cable_choo ser#selected-step1=MINI-DISPLAY-PORT&selected-step2=VGA&step=3

Is there a way to access my iTunes Library, which is stored on a (PC) External Hard Drive, on a MacBook Air (through an Apricorn Universal Hard Drive Adapter), without transferring the music files off of the external hard drive?

Is there a way to access my iTunes Library, which is stored on a (PC) External Hard Drive, on a MacBook Air (through an Apricorn Universal Hard Drive Adapter), without transferring the music files off of the external hard drive?
In other words, because the MacBook Air only has 120 gbs of hard drive space & my old hard drive, from a Lenovo, has 500 gbs of hard drive space (and I have over 120 gbs of music), I’m looking to manage my iTunes music from the external hard drive permanently. Upon attempting to access the iTunes library held on the external hard drive the following message comes up: “The iTunes Library.itl file is locked, on a locked disk, or you do not have write permission for this file”. Is there a way to get around this?
Any advice would be greatly appreciated, thanks so much!

You will have to engage a split library which means you will have to start answering questions on this forum because you will need to learn a lot about how iTunes works in order not that have a big mess at the end of it all. It also won't be easy when the time comes to relocate it all to different drives.
You can go to advanced preferences and turn off organize media and copy to items to media folder when adding items to library. Next read about how to selectively consolidate items to the external drive.
Sept. 2010, Consolidate selected content - https://discussions.apple.com/thread/2589812 and April 2014, https://discussions.apple.com/message/25414357
"...selected the new tracks directly in iTunes, Control-clicked on the selection, and saw that now you can consolidate selected items." - http://hints.macworld.com/article.php?story=20090919000326840
Remember that when you start iTunes without the external drive turned on iTunes will present you with a bunch of broken links. If you have automatic downloads enabled with iCloud you may have to turn that off to prevent iTunes from repopulating your drive trying to deal with those "missing" tracks.
If you add tracks in bunches to iTunes and want them to go to different media folders you will need to either add them by holding down the option key while dragging if the desired media folder is not the one set in preferences, or by changing the media folder in preferences. Changing media folder preferences only applies to new files added, not old ones.
Okay, I am going to stop typing because you might just reply to me, "Oh, okay, forget it," and I don't need the exercise.
What are the iTunes library files? - http://support.apple.com/kb/HT1660
More on iTunes library files and what they do - http://en.wikipedia.org/wiki/ITunes#Media_management
What are all those iTunes files? - http://www.macworld.com/article/139974/2009/04/itunes_files.html
Where are my iTunes files located? - http://support.apple.com/kb/ht1391

Updated to Mavericks OS X but can't use my external drive by WD My Passport. The Mac reads it but I can't add/remove files to the external drive. Help?!

Updated to Mavericks OS X but can't use my external drive by WD My Passport. The Mac reads it but I can't add/remove files to the external drive. Help?!
The WD My Passport, I purchased back in early December 2013 & I just used it the other day after I updated my Macbook... & of course it says in the online manual it works for Mac Lion, Mountain Lion, Snow Leopard but not this new Maverick update. Is there anything I can do?

I like the free demo of SuperDuper to make clones. It's free, Tiger and Leopard ready and is easy to use. If you buy the full version you can do incremental backups.
You should use Disk Utility to do a Disk Repair, as shown in this link, booted up on your install disk, before you make a clone of it.
I then partition my external disk, in Disk Utility, with a partition that is the same size , actually a tad bigger, as my system disk. I then use SuperDuper to clone my system disk over to that partition.
With a clone on an external FireWire drive (USB drives are not bootable on some Macs) you can bootup on it to do your repairs or just run your Mac anytime you have trouble with your main drive. Be careful, there are a few external FireWire drives out there that are not bootable on Macs. Check the drive's manual to be sure.
 DALE

I placed my aperture library on a 1 TB external drive (the file is 300 GB) and Aperture churns and churns but will not open the file. I don't know if the file is too large or if it is the external drive or what? any ideas? Smaller files will open.

I placed my aperture library on a 1 TB external drive (the file is 300 GB) and Aperture churns and churns but will not open the file. I don't know if the file is too large or if it is the external drive or what? any ideas? Smaller files will open. This is very annoying.

If this is an external USB drive, you must understand that USB is really, really slow. There may be nothing wrong except for that.
In my opinion, USB external drives are only acceptable for backups, and to get "near Hard Drive" performance, you need FireWire.

HT1349 Hello, how to move the iTunes master file from C drive to an external drive and them iTunes stick with the external drive after on an on going basic?

My desktop C drive is full HD of 1 TB, I would like to move the current iTunes master file to an external 4TB drive and then iTunes stick with the external drive
Could this be done, if yes how to do it?
Thank you for your help
Henri

If it's the same as with a PC, the procedure would be to:
(a) Plug in the new external drive,
(b) Set your iTunes preferences such that the iTunes Music Folder is on the new drive,
(c) Use the iTunes "Consolidate Library" utility to copy your library to the new location.
(d) When the transfer is complete, check "Get Info" on some songs to verify their location.
The original files will remain on the old drive, so you'll have a way to recover should there be a problem. You may need to manually copy any iPhone/Touch Apps to the new drive since I'm not sure those are transferred with the Consolidate utility.

HT4878 Why is this data chart Timeline multi colored (in About/Storage) and the external drive is only pink?

1. When viewing the Storage Timeline for my Macbook and the External Drive for the Time Machine backup instead of multi-colored bars the data is only showing a one pink one. Is that because it is all "backup" on the external? 2. Is the discrepancy in size the OS being left out? Thanks.

Time Machine makes full backups of the hard drive. If you want to change this, you can open System Preferences > Time Machine > Options, and add excluded items. However, I recommend you to keep backing up the whole drive, so you will be able to restore the whole backup in case of a hard disk failure

Keeping some files ONLY on the external drive

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