How do I sync an iPhone to a new computer?

Ok so I have a Mac with my own user account and itunes, iphone and ipad etc.
My partner was using her windows laptop for syncing her itunes for her iphone.
She has now created a user account on my mac to use instead of her laptop. To enable us to have the same music library I have moved the itunes folder into the 'shared' folder so both libraries have the same music.
The part when I am stuck is syncing her iphone to the new itunes library on my mac as the usual 'erase and synce' mesage appears. How can I ensure that all apps, messages etc are not lost in the transfer process?
I have made a back up on her laptop itunes but am unsure of what to do next. I have read that you can just copy the whole old itunes folder from one computer to another and that will work fine, but as I have moved the music to the shared folder I am not sure it will work if I move all of this over.
Any help would be great as it's starting to drive me mad!

If your old hard drive works, you can put it in an external usb enclosure and copy your entire iTunes folder to your new computer. Otherwise, if you have to copy music from your phone to your computer that wasn't purchased from the iTunes store you'll have to use 3rd party to do so, such as Touch Copy (PC or Mac) or PhoneView (Mac only).

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https://discussions.apple.com/docs/DOC-3141

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See this user tip for the procedure: https://discussions.apple.com/docs/DOC-3141

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how can i sync my iphone to a new computer without it deleting eveything off of my phone?

Migrate the iTunes library the phone is sync-ed to, to the new computer.
Wouldn't you have done that anyway?

How do you sync you iphone to a new computer without loosing your songs or apps

How do you sync you iphone to a new computer without loosing your songs or apps

Hello CRFamily,
This can be done by transferring your library to the new computer, as detailed in the article linked below.
iTunes: How to move your music to a new computer
http://support.apple.com/kb/HT4527
Cheers,
Allen

How do you sync an iPhone with a new computer?

I know this question has been posted on this forum countless times, but none of the responses seemed to help me. I need a simple and clear answer on how to sync my iPhone to a new computer. I used to sync my iPhone with a Mac, but I got a new laptop running Windows 8 and I want to sync my iPhone with this new laptop. All the responses on this site tell me to download some sort of software to extract the data from my iPhone, but none of them seem to be free. My old Mac is still intact, so I can still use it if I need to. All of this is really confusing. Sorry if I'm being really ignorant about all of this, I just really need some help.

Welcome to the discussions,
a manual backup should help to transfer your data and apps.
Disable autosync in itunes, connect your phone, right click on it in the device list and choose backup. iTunes will backup your phone without syncing and save data, pictures taken with the phone and settings to the new itunes library.
See what's included in this backup here: http://support.apple.com/kb/HT1766
After that, transfer your purchases the same way by choosing "transfer purchases", to copy all apps and bought media from the Store to your computer.
Set up at least one contact and event on your computer to be able the merge your calendars and contacts after your phone got wiped during the first sync.
The rest of the data can be restored again from the manual backup you made before.
Music is one way only, from the computer to your device, unless you bought the songs in itunes and transferred your purchases.
There is 3rd party software out there, but not supported by Apple, see this thread: http://discussions.apple.com/thread.jspa?threadID=2013615&tstart=0
Restoring: http://support.apple.com/kb/HT1414
Apps can be downloaded again for free, in case you missed some: http://support.apple.com/kb/HT2519

How do I sync my iPhone to a new computer without losing all my data?

I hooked up my iPhone to my new computer and was able to transfer songs etc to my iPhone with no problems, just clicked and dragged like normal. Suddenly it wont let me do so, wont let me drag a song or anything over to my device. I noticed that the "manually manage music and video" check box was unchecked, so I clicked it and got the prompt to restore my iPhone and delete all the data on it. Obviously I clicked cancel. I have read a few other discussions about this issue but am confused and need a dummies approach please as most people seem to be referring to certain things, for example they are worried about losing their applications, or just their music....I want to be able to sync my iPhone to my new computer, without ANYTHING changing. I dont want to lose any music, apps photos, contacts, purchases....anything....
Please help. Thank you!

By design, the iphone will sync itunes content with one computer at a time. Any attempt to sync such content with a second computer will result in ALL itunes content being first erased from her phone & then replaced with the content from the second computer. This is a design feature and cannot be overridden. Because you are replacing your computer, your phone will see this computer as a "new" computer. The itunes content sync is one way: computer to phone. If you have photos that were synced to your phone or music ripped on her own that were not backed up, you will first have to extract them from your phone using third party software, before you do anything else, as Apple makes no provision to do so:
http://www.wideanglesoftware.com/touchcopy/index.php
Once you've done that, do the following in the order specified:
1. Disable auto sync when an iPod/iPhone is connected under Preferences>Devices in itunes(under the edit menu if using Windows).
2. Make sure you have one contact & one event in the supported applications(Outlook, Windows Address Book) on your computer. These entries can be fake, doesn't matter, the important point is that these programs not be empty.
3. Connect her phone, iTunes running, do not sync at this point.
4. Store>Authorize this computer.
5. File>Transfer Purchases(To make sure all purchased content on your phone will be in your itunes library).
6. Right click in the device pane & select reset warnings.
7. Right click again and select backup.
8. Right click again & select restore from backup, select the backup you just made. When prompted to create another backup, decline.
9. This MUST be followed by a sync to restore your itunes content, which you select from the various tabs, You'll get a popup regarding her contacts & calendars asking to merge or replace, select merge.
You should be good to go.

How do I sync my iPhone 5 with new computer?

I just sold my computer to my friend, but need to sync my iphone with a new computer. I have a lot of information on it that I don't want to lose, especially voice notes. I don't want to loose anything on my phone, just transfer iTunes libraries.
I tried to sync it and a pop up window came up with the Erase and Sync option. If I back up my iphone, where can I access the file? I need to take the voice notes from my phone and put them into individual files on Finder.
thanks!!!

Take a look at this article to get some background info: http://support.apple.com/kb/HT1495
Steve M.

How can I sync my iphone in a new computer using the same library

Is there any mean of syncing my iphone with a new computer using the same library?

Restore your iTunes library backup to your new computer... http://support.apple.com/kb/ht1751

How do I sync my iphone to a new computer without losing folders?

I've found several "techniques" that attempt to solve this problem, but none of them work 100%.
http://www.justinmontgomery.com/sync-ios-device-to-a-new-computer-you-are-screwe d
I upgraded from a 3 year old HP laptop to a new MacBook Pro. I transfered my entire library (100GB or so with music, videos and apps) to the new Mac before trying to sync anything. When I moved/synced my iPad from the HP to the Mac, I lost all my folders, photos and app data, such as saved games etc. I "Transfered Purchases", then backed up the iPad and restored from that backup, but still lost most of the data (and spent the next few hours re-organizing apps into folders.)
I'm glad I didn't try it on my iPhone first because the issue would have been much worse.
I can't find ANYTHING in the Apple support docs that offers a reasonable way to move ALL my data to the new Mac. Does anyone know of a way to do this without losing data? I found a video that shows how to trick the iTunes Library files into making it work, but it's from PC to PC and I doubt it would work on the Mac.
Please, Apple, fix this or make it easier.
Thanks,
J

Not simple enough. Please read the original concern.
The issue is not "getting music to the new machine" or "authorizing the new machine" or "transferring purchases from an idevice". The issue is that after doing all those things, even creating a backup using the new iTunes/Mac, syncing my device with the new library erases all the app data from the iPhone, as well as folder structure and page layout. Music is expendable in this situation as it's just a matter of moving the files around. (Which I did before I ever started this exercise.)
The problem is that everything from email accounts to folders are lost when I sync the device with a new computer. I tried this on my iPad first and spent a good deal of time re-arranging everything and getting all the data back. The pictures are just gone. Good thing I backed them up on the old PC.
It won't be as simple on my iPhone as I have a ton of stuff on it and can't afford to lose anything. Some of the data is gave saves and such, but other things are more important. And I don't want to lose those game saves either.

How can i sync my iPhone to a new computer with out loosing my music

how can i sync my iphone 4 to my new computer with out loosing my music & photos

Launch iTunes on your computer.
From the menu bar (top of your screen) click Store / Authorize This Computer
Sync your iPhone.
iOS: Syncing with iTunes

Does anyone know how I can sync my iphone with a new computer?

I have a new computer (PC), itunes is downloaded. I have spent most of the day using both an external hard drive and my iphone to transfer the apps, music, videos etc onto my new computer, which worked without an issue.
I have deauthorised the old computer and authorised the new one with my apple ID.
However, when I try to sync my phone to the new computer it wont update anything on my iphone (i.e. photos that are on the computer wont transfer over etc, even though I have selected that file to sync). It is starting the sync but then comes up on the progress bar saying "cancelling sync".
Any ideas, I'm slowly going mad!

This will define syncing http://support.apple.com/kb/HT1296. The advantage is it allows you to backup the phone, you can sync music onto the phone, as well as contacts and calendars.

How do I Sync my iPhone with my new computer without losing all of my songs already on the iPhone?

I recently got a new MacBook Pro and I want to be able to sync my iPhone with my new iTunes library without running the risk of losing all the music that I already have on my iPhone.

See wjosten's post here: https://discussions.apple.com/message/13356770#13356770.

How do i sync the iphone with a new computer without losing pictures?

my laptop was stolen and i've recently replaced it. now when i try to sync my iphone with the new laptop, it gives me messages saying that it will replace what's on the iphone by whatever it currently has on the itunes library. i can't have this happen because i have several photos that were uploaded to my iphone via the old laptop. i'd like to find a way to download the pictures and then place them back in my itunes library for sync in the future. at the very least, just be able to download them off my iphone to back them up. please help!

There is no way to get pictures off the phone or to move them from folders to the camera roll. The format on the phone is proprietary, so even if you could get them off you couldn't use them. Having said that, search the Internet; there are some apps that can access some files on the iPhone without hacking it. There may be one that can get the photos off. The only other option is to email them to yourself. This will reduce the resolution, however.
I'm afraid you have pointed out the importance of frequent computer backups.

HT1688 how can I sync my iphone to a new computer without deleting all my photos?

I sync my iphone on a different coumputer, but now I want to be able to put music on it from my laptop because its easier so i want to sync it on my laptop. is there a way I can sync my iphone on a different computer without having to delete anything other than the music on it?

Just your case
https://discussions.apple.com/message/8935034#8935034

How do I sync an iPhone to a new computer?

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