If you’re using the new Photos app on your Mac instead of the older iPhoto app, you most likely have a duplicate photo library floating around on your hard drive. For a lot of people, that could mean gigs and gigs of wasted storage space, especially on shared Macs with multiple migrated libraries.

2020-3-30  Yes, it is safe. That said, don't just delete all the contents of your cache folder without reason. It can be beneficial to clear out those taking up the significant space in your /Library/Caches/ if you need to free some up, but you really shouldn't clear any contents of your /System/Caches unless there is a problem. As would be expected, you will find that the programs you access most often. 2020-3-31  However, it is always safe to delete the Library folder (while the project is not open in Unity) as all its data is generated from what is stored in the Assets and ProjectSettings folders. This also means that the Library folder should not be included in version control A system for managing file changes. You can use Unity in conjunction with.

Is It Safe To Delete Library Audio Folder Mac Pro

Here’s how to check for multiple libraries and how to delete them…

Before deleting your old library: Make a backup

While the Photos app should have imported all your photos and videos just fine, I always recommend having backups handy. Perhaps you’ll delete an old photo by accident at some point and want it back later. If you have a copy of your old iPhoto library still handy, you can pull it form there as a last resort.

I saved my old iPhoto library to my Dropbox account. You can of course use any service of your choice, or just drop it onto an external hard disk you have laying around. Regardless of how you do it, I’d highly recommend saving a copy before deleting it.

Once you’ve backed up your old iPhoto library (if you chose to do so), you can proceed with deleting it:

1. Open a new Finder window on your Mac.
2. Click on Pictures in the left hand navigation. If it isn’t there, just search for your pictures folder using Spotlight.
3. You should see two libraries, one is your old iPhoto Library and one is your new Photos library.
4. Move your iPhoto Library to your trash can and empty it.

Check the storage space on your Mac, you should notice that you have more storage space available. If you are on a shared Mac and have multiple user logins, everyone using the new version of Photos on that Mac should make sure they don’t also have duplicate libraries.

I’m not sure why Apple doesn’t create a process to delete old versions of libraries after migrating to Photos, but they should. Until that happens, you’ll have to delete your old library manually.

Give this tip a try and see how much storage space you were able to clear up. As you can see in the screens above, my old iPhoto library was over 30GB, which was definitely a healthy chunk of hard drive space that I now have back.

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Your Mac storage tips?

This is one of many ways to regain storage space on your Mac without having to sacrifice losing data. But we know there are lots of others. What are some of your favorite Mac storage tips for recapturing space? We’ve love to hear them in the comments!

Update

A follower on Twitter referenced to me an article written on Six Colors pointing out that the library is actually hard-linked between versions. While this may be true when you first migrate, it seems that if you make any changes to any files and the libraries become different, splicing can and will occur.

To test this theory, I deleted my iPhoto library on my other Mac to see how much storage was freed up. For those wondering, my iPhoto library was 35.99 GB and my Photos library was 41.16 GB. You can see the before and after results on my hard disk space below. I was able to free up over 20 GB of space. So I’m not sure what I think about hard linking or how well it’s actually working between Photos and iPhoto.

Bottom line, if you’re short on storage space and you want to free some up, there’s really not much point in having two photo libraries floating around on your Mac. Hard linking or not, deleting the old library will free up space in almost every case.

Note that the name of this folder is localized. In German it's called 'Geladene Mail-Anhänge' (Downloaded Mail Attachments)

@kirkmc - Mail saves the attachments for offline viewing.

I was going to say the same -- for IMAP connections, Mail keeps these offline so they're available without needing to re-download them each time..
Just another reason to stick with good-ol' POP..
Cheers,
Peter

Mac can i delete everything inside library caches. Right--it actually makes a fair amount of sense on IMAP connections so you don't end up re-downloading large attachments repeatedly, since I'm pretty sure IMAP attachments are NOT downloaded along with the messages during a sync.
Example: I have a message with 10MB of large images attached to it in an IMAP account. With the 'delete on quit' option selected, every time I view that message, if I have quit Mail since the last time, it will need to re-download those 10MB of images to display them. For someone like me, who passes a lot of images around via email (business reasons), that would be incredibly annoying--it would render Mail.app nearly unusable, in fact.

Not really. Your comment made me test it - I disconnected from my internet connections and test-opened a bunch of attachments. They all opened no problem, without complaining that there was no connection to the IMAP server. I quit Mail, saw them deleted from the above mentioned folder, and repeated.
Attachments are stored offline in Mail, and this folder is a duplicate location when the user decides to open the attachment..
Just my 2 cents.

Interesting. I stand entirely corrected, then.
I had always assumed, since when you first view an IMAP message with large image attachments you can see the image attachments queueing for download, that they were going into that folder.
This being the case, this is a very valuable tip for those short on disk space (those of us with SSDs, in particular).

Actually you were partially right. The thing is that most email clients have an OPTION that allows you to keep copies of messages with or without attachments for offline viewing.
For your desktop or laptop computer turning this option on makes a LOT of sense, and I believe it is the default for Apple Mail and Outlook.
For other mobile devices like smartphones and tablets this option does NOT make a lot of sense so many mail clients don't even include it.

After noticing that this folder was taking up a lot of space on my mac, I cleared it out, and then set up a Hazel action for it, so that files added to it will only be in there for a few months, then trashed.

Under Mountain Lion my version of this folder is ~/Library/Containers/com.apple.mail/Data/Library/Mail Downloads
@petersconsult not sure why you'd want to run POP in this day and age. I check the same e-mail accounts on 4 different devices, IMAP's the only way to stay sane doing that. http://en.wikipedia.org/wiki/Internet_Message_Access_Protocol#Advantages_over_POP

Seriously.

I'm as big a fan of local storage as the next luddite, but when you try to access three different mail accounts from a home desktop, a home laptop, a work desktop, an iPhone, and an iPod Touch in any functional way, POP does not cut it. Besides, with offline caching, there's really not that much difference between IMAP and POP (unless the IMAP server instructs your local computer to purge the entire contents of a folder or something, in which case you're relying on your local backup).

Is It Safe To Delete Library Audio Folder Mac Os

Is It Safe To Delete Library Audio Folder Mac Version

Thanks for the heads up. I found my downloads folder in the same place. Running Mountain Lion 10.8.3.

to clear disk space basically I create rules, It helps me to manage my account more efficiently.

Hello,
I had the same issue about having large amount of attachments in Mail, so I've done a little script to save attachments file into an external drive or directory, and also delete all attachments files gracefully
If IMAP, nor just 'find', is not enough for your case, maybe the script could be useful:
https://github.com/blues-man/mail-attachments-util
chmod 755 mail_util.sh
# Recover all attachments, organized by accounts and Folders, putting them on an external drive set explicitly in the script
./mail_util.sh
# Delete all attachments asking for each account
./mail_util.sh --delete
# Delete all attachments asking for each file per account
./mail_util.sh --delete --ask
Bye Skype library folder mac.