My startup disk is full: how do I clean it up? Simply deleting some files does not help.

I get the message that my startup disk is full. It says to delete some files to make more space; but after deleting some files, this message will reappear again after a while. What else can be done?

I hope you haven't removed anything that involves the system.
I hope you haven't remove things willy nilly, either.
Here are some general tips to keep your Mac's hard drive trim and slim as possible
You should never, EVER let a conputer hard drive get completely full, EVER!
With Macs and OS X, you shouldn't let the hard drive get below 15 GBs or less of free data space.
If it does, it's time for some hard drive housecleaning.
Follow some of my tips for cleaning out, deleting and archiving data from your Mac's internal hard drive.
Have you emptied your Mac's Trash icon in the Dock?
If you use iPhoto, iPhoto has its own trash that needs to be emptied, also.
If you store images in other locations other than iPhoto, then you will have to weed through these to determine what to archive and what to delete.
If you use Apple Mail app, Apple Mail also has its own trash area that needs to be emptied, too!
Delete any old or no longer needed emails and/or archive to disc, flash drives or external hard drive, older emails you want to save.
Look through your other Mailboxes and other Mail categories to see If there is other mail you can archive and/or delete.
STAY AWAY FROM DELETING ANY FILES FROM OS X SYSTEM FOLDER!
Look through your Documents folder and delete any type of old useless type files like "Read Me" type files.
Again, archive to disc, flash drives, ext. hard drives or delete any old documents you no longer use or immediately need.
Look in your Applications folder, if you have applications you haven't used in a long time, if the app doesn't have a dedicated uninstaller, then you can simply drag it into the OS X Trash icon. IF the application has an uninstaller app, then use it to completely delete the app from your Mac.
To find other large files, download an app called Omni Disk Sweeper.
Download an app called OnyX for your version of OS X.
When you install and launch it, let it do its initial automatic tests, then go to the cleaning and maintenance tabs and run the maintenance tabs that let OnyX clean out all web browser cache files, web browser histories, system cache files, delete old error log files.
Typically, iTunes and iPhoto libraries are the biggest users of HD space.
move these files/data off of your internal drive to the external hard drive and deleted off of the internal hard drive.
If you have any other large folders of personal data or projects, these should be archived or moved, also, to the optical discs, flash drives or external hard drive and then either archived to disc and/or deleted off your internal hard drive.
Good Luck!

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My startup disk is full, I need to clean it up, and I don't know how to even find it!

My startup disk is full, I need to clean it up, and I don't know how to even find it!

Don't mess with anything you don't recognize. The system is generally not the reason for lack of free space.
Best candidates are your files which are located in the folder with the little house for an icon in Finder. Of your own files the one most likely to take the largest amount disk space are music, movies, video and photos. Any of those can be deleted or move to external storage.
Allan

Blue screen after login and HD and startup disk is full -how to erase data?

Blue screen after login and Hard drive and startup disk is full -How do I get in to erase data?

this user tip might help:
Your Mac needs adequate hard drive space to operate normally. How full can a drive be before it's too full? There is no hard and fast rule that says “X” amount or “%” of free drive space is needed. A low amount of RAM requires more drive space for Virtual Memory’s swap files.
Problems from insufficient RAM and free hard disk space are discussed in this link
http://www.thexlab.com/faqs/lackofram.html
Here’s some general guidelines for minimum hard drive free space:
1. As a general rule, your available space should be 5GB as an absolute minimum as it generally requires that much free space to perform an Archive and Install of Mac OS X and still preserve some free space for VM swap files.
2. Some say that your hard drive should have at least 5% of it's capacity available for use. Still others say 10% to 15%. If you routinely process complex graphics and videos, even more space is required.
Look at these links about freeing up more space.
Where did my disk space go?
_*http://www.macfixitforums.com/showflat.php?Cat=&Board=Forum38&Number=770243*_
Download & use WhatSize described in this link or Disk Inventory X @ _*http://www.derlien.com/*_
Freeing space on your Mac OS X startup disk
_*http://www.thexlab.com/faqs/freeingspace.html*_
Amazing Disappearing Drive Space
_*http://www.pinkmutant.com/articles/TigerMisc.html*_
Increase HD Free Space
_*http://macosx.com/forums/howto-faqs/275191-how-easily-increase-hd-free-space-lap top.html*_
How to free up my disk space
http://www.macmaps.com/diskfull.html
JGG

My mac air says " startup disk is full".How to solve ???

My Mac air has a message during starting the computer and says that startup disk if full. In the composition of my hard there are 120 GB used space on other parts, which I have not understand where is these files.

First, empty the Trash if you haven't already done so. Then reboot. That will temporarily free up some space.
According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation. You also need enough space left over to allow for growth of your data. There is little or no performance advantage to having more available space than the minimum Apple recommends. Available storage space that you'll never use is wasted space.
If you're using Time Machine to back up a portable Mac, some of the available space will be used to make local snapshots, which are backup copies of files you've recently deleted. The space occupied by local snapshots is reported as available by the Finder, and should be considered as such. In the Storage display of System Information, local snapshots are shown as "Backups." The snapshots are automatically deleted when they expire or when free space falls below a certain level. You ordinarily don't need to, and should not, delete local snapshots yourself.
To locate large files, you can use Spotlight. That method may not find large folders that contain a lot of small files.
You can more effectively use a tool such as OmniDiskSweeper (ODS) to explore your volume and find out what's taking up the space. You can also delete files with it, but don't do that unless you're sure that you know what you're deleting and that all data is safely backed up. That means you have multiple backups, not just one.
Deleting files inside an iPhoto or Aperture library will corrupt the library. Any changes to a photo library must be made from within the application that created it. The same goes for Mail files.
Proceed further only if the problem isn't solved by the above steps.
ODS can't see the whole filesystem when you run it just by double-clicking; it only sees files that you have permission to read. To see everything, you have to run it as root.
Back up all data now.
Install ODS in the Applications folder as usual. Quit it if it's running.
Triple-click the line of text below to select it, then copy the selected text to the Clipboard (command-C):sudo /Applications/OmniDiskSweeper.app/Contents/MacOS/OmniDiskSweeper
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window (command-V). You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.
The application window will open, eventually showing all files in all folders. It may take some minutes for ODS to list all the files.
I don't recommend that you make a habit of doing this. Don't delete anything while running ODS as root. If something needs to be deleted, make sure you know what it is and how it got there, and then delete it by other, safer, means. When in doubt, leave it alone or ask for guidance.
When you're done with ODS, quit it and also quit Terminal.

My startup disk is full, how do I Repair it

I have a iMac and a macBook. Both are displaying a message that the startup disk is full. I would like to fix this problem, but I’m afraid that I might do more damage then good. Is there anyone that can walk me through it so that when I’m done I don’t have to take them into the apple store because I messed them up more..
Thanks,

Maybe it would be a good idea to have someone do this for you, but if you really want to do it, then
1. Make sure you are logged into an account which does NOT have admin rights. Just in case you try to do bad things to important system files, this will stop you. If you get a message saying you have to put in an admin's userid and password, you are probably trying to do bad things. Don't do it!
2. Take backups of what you have. You do have a good multi-method backup regime, don't you?
3. Look for data which you truly don't want, and never will, and delete it. Empty the trash.
4. If you now have enough free space on your boot disk (say 20%), then you are nearly done, but not quite
5. If you couldn't find enough files and folders to trash, then decide which you'd be happy to move to an external drive. Copy them there (not to one of your backup drives, please!), and trash the copy on the boot drive
6. When you have reduced the clutter on the boot drive and have a good lot of free space, then you have one remaining problem. Since the drives got to be nearly full, you will probably have caused bad fragmentation of your boot drive files and free space. Either use a defrag program or make a clone copy of the boot drive, boot from the clone and clone back to the internal drive, then boot from it. Make sure you always have a good backup or two along the way. Consider upgrading the capacity of the boot drives during this process.

My startup disk is full. I can't open anything to delete.

My startup disc is full and I can't open anything to do some deleting. Can anyone advise .
Thank you

Do you have an external drive? If you do not, strongly recommend you get one. The first step would be to make a back up of your internal hard drive. Of course that assumes you can format the external drive and use Time Machine on the computer in the state it is in now.
Once the back up is done you can try repairing the internal drive so you can start to purge unnecessary files off it.

Startup disk almost full--how to change the defualt free space amount?

I know that not too long ago I was able to change the default value that OSX uses to determine if the startup disk is almost full (5 GB?). For the life of me, I can't remember how I did that. I do know that it was a simple process--no terminal, no Unix, just a simple dialog box somewhere.
Can anyone remind me how to make this adjustment?

There is no such parameter built-in to OS X. You must have been using some third-party disk monitoring utility.

My computer keeps telling me that my start-up disc is full, how do I clear up space without deleting my files?

I really don't have time to go into the Apple Store, does anyone know how to clear up some space on my start-up disc?

You might read through this.....it will mean deleteing some stuff though....
http://www.thexlab.com/faqs/freeingspace.html

"Startup disk almost full" How do I fix this?

How do handle this? Thank you.

Help here > Freeing Up Hard Disk Space - Mac Guides

My hp d recovery drive is full how can i clean it up or delete the earlier information

hp pavilion dv9310ca / windows vista

Where do you have system backups stored?
regards,
erico
****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
2015 Microsoft MVP - Windows Experience Consumer

What does it mean when my macbook pro says startup disk is full?

When im on my macbook pro a message keeps poping up that says my startup disk is full.

First, reboot. That will temporarily free up some space. According to Apple documentation, you need at least 9 GB free for normal operation. You also need enough space left over to allow for growth of your data.
Use a tool such as OmniDiskSweeper to explore your volume and find out what's taking up the space.
Proceed further only if the problem hasn't been solved.
ODS can't see the whole filesystem when you run it just by double-clicking; it only sees files that you have permission to read. To really see everything, you have to run it as root.
First, back up all data if you haven't already done so. No matter what happens, you should be able to restore your system to the state it was in at the time of that backup.
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ If you’re running Mac OS X 10.7 or later, open LaunchPad. Click Utilities, then Terminal in the page that opens.
After installing ODS in the Applications folder, drag or copy — do not type — the following line into the Terminal window, then press return:
sudo /Applications/OmniDiskSweeper.app/Contents/MacOS/OmniDiskSweeper
You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up.
I don't recommend that you make a habit of this. Don't delete anything while running ODS as root. When you're done with it, quit it and also quit Terminal.

I have a MacBook Pro. I was gone for 30 days and when I got back it tells me that my startup disk is full. I have a 500 GB drive and it shows that I have about 500 MB available. It constantly changes. How do I fix this?

I have a MacBook Pro that is telling me my startup disk is full. I left for 30 days and when I came back to use it, it tells me that the disk was full out of 500 GB. I don't have that much on it and it was perfectly fine when I left. I Verified the disk through disk utility and it told me it had issues so then I repaired it and it said everything is fine. It still says the hard drive is full. How do I fix this problem. Any help is greatly appreciated.

Have a read here Where did my Disk Space go?
Stefan

HT3680 how to free up space if startup disk is full

How do I free up space when the startup disk is full?

O Trejo, greetings;
I am not the Wizard but a mere citizen of Oz who wears green tinted glasses as all others do.
DaisyDisk appears to perform a similar function as OmniDiskSweeper which I still prefer due probably due to my familiarity with it.
I am not familiar with OSX Server, so I am off the hook on this one. If you go to the OSX Server forum, there will be forum members who will be able to address your query. This is the link:
https://discussions.apple.com/community/servers_enterprise_software/os_x_server
If you are really nice to them, they may give you a Dog Yummy.
Ciao.

HT4847 On startup my macbookair says start up disk full/delete some files. When I look at storage disk utility I see 51GB of a possible 60GB is used with Other. What is Other? and how can I view and delete some of these files?

On startup my macbookair says start up disk full/delete some files. When I look at storage disk utility I see 51GB of a possible 60GB is used with Other. What is Other? and how can I view and delete some of these files?

A MacBook will use Time Machine to make local backups so that when connected to an external drive it will backup a lot faster.
to disable this, you must use a command under terminal.
to locate terminal, do a search for it under spotlight (the magnifying glass on the top right corner), should be the first hit.
once under terminal, type the following text exactly:
sudo tmutil disablelocal
hit enter.
you will be asked to input your password, if you do not have a password, you will have to create one before performing this command. after entering your password, hit enter again and close terminal.
in a few minutes the space taken up by time machine should be cleared.

When starting the computer, I get a grey screen and following status: your startup disk is full. How can I still enter (in order to free-up some space)?

When starting the computer, I get a grey screen and following status: your startup disk is full. How can I still enter (in order to free-up some space)?

Simple way to make HDD free space is delete files you don't need anymore.
Or get bigger drive and external HDD case, then:
1) install bigger HDD in external drive case.
2) connect external drive and format and mount it with Disk Utility.
3) make clone with Carbon Copy Cloner or SuperDuper!(source drive is internal HDD, target drive is external one).
4) install external bigger drive into your Macbook Pro.
In the cace if your're using Mac Pro:
1) get bigger HDD and install it in drive bay of Mac Pro.
2) format and mount it with Disk Utility.
3) make clone with Carbon Copy Cloner or SuperDuper!(source drive is old HDD, target drive is new one).
4) Select boot drive to new bigger one.

My startup disk is full: how do I clean it up? Simply deleting some files does not help.

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