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.

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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 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!

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.

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

How do handle this? Thank you.

Help here > Freeing Up Hard Disk Space - Mac Guides

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.

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, 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

My mac book startup disk is full and when I start it, it give me a blank blue screen. I have tried the shift and I started in safe mode, and it gave me the stars screen. How can I delete files to fix the problem

My mac book startup disk is full and when I start it, it give me a blank blue screen. I have tried the shift upon start
and I started in safe mode, and it gave me the stars screen. How can I delete files to fix the problem

1. Start up in Safe Mode.
    http://support.apple.com/kb/PH11212
2. Empty Trash.
    http://support.apple.com/kb/PH10677
3. Delete "Recovered Messages", if any.
    Hold the option key down and click "Go" menu in the Finder menu bar.
    Select "Library" from the dropdown.
    Library > Mail > V2 > Mailboxes
    Delete "Recovered Messages", if any.
    Empty Trash. Restart.
4. Delete old iOS Devices Backup.
    iTunes > Preferences > Devices
    Highlight the old Backups , press “Delete Backup” and then “OK”.
    http://support.apple.com/kb/HT4946?viewlocale=en_US&locale=en_US
5. Re-index Macintosh HD
   System Preferences > Spotlight > Privacy
   http://support.apple.com/kb/ht2409

Its saying startup disk almost full. have no music or photos on computer. how do i clear it up and free up the HD

its saying startup disk almost full. have no music or photos on computer. how do i clear it up and free up the HD

There are some items to the right of these reply boxes,
of them a few are likely to be of help to some extent...
Without knowing which OS X version, advice will be not specific
and to answer three different ways when one of them is correct
is a waste of time.
Is your OS X newer than Lion 10.7.5? IF so different rules apply
to finding out what is free space, where it is, & how to tell if it is.
For systems older than Lion (Snow Leopard, Leopard, Tiger, Panther)
the rules are a little different, since there would not be an Other item
on the hard disk drive which could contain items necessary to the OS
yet not detailed to the user.
And Lion 10.7 has a few hidden files that are hard to locate, and one
of them may have some bearing on the missing space of a HDD.
The items here, mostly for 10.7:
https://discussions.apple.com/message/24954432#24954432
start up disk full, other options:
https://discussions.apple.com/message/11808734#11808734
There are Support articles, you could use Help viewer in the
system, on your computer, to look for results; or use google.
However, avoid the temptation to use a badware such as cleanmymac,
mackeeper, and others that are sources of known trouble to the Mac.
Good luck & happy computing!

I can't login, keep geting "Your Startup Disk is Full" and asking me to delete file. if I cant login how can I delete files? Please help

I Keep getting "your startup disk is full" ..... "You need to make more space available on your startup disk by deleting file..." If I can't have an acess, how can I delete files. Please help..

That means the hard drive of your computer is full, and you don't have enough free space on your computer, to do what you are trying to do.
You need to clear up space on your computer.
If you hard drive is full, check the following places to ensure they are not holding unwanted data.
- your trash can in the dock
- if you use iPhoto, your trash in iPhoto - launch iPhoto, and select trash in the left hand column. iPhoto has it's own trash, and is often overlooked
- your download folder - finder / home user / downloads - every time you download something, it stores it here. This is often overlooked as well
- do you have more than one user on the computer? If you do, ensure they are needed. If not, delete them, and the contents of their home folders
If you hard drive is very full, you may want to consider the following:
- putting in a newer larger hard drive - (call you local apple store for prices on this)
- deleting data off your computer
- moving data to an external drive - (iPhoto Libraries, iTunes Libraries or iMovie events, as they are the biggest space hogs)

Warning message: Startup disk is full-what does this mean and how do I fix?

HI. I keep getting this warning that my startup disk is full -- but I just recently deleted many files. how do I fix?

http://docs.info.apple.com/article.html?artnum=305454 Mac OS X 10.4: FileVault - "There isn't enough space on your hard disk..." alert
Empty the trash!
Open up your application folder & go through all your apps. Trash all the apps you no longer want and/or use.
An easier way to do this is to open the Application folder in list view & press the Command+j keys.
In the the dialog that appears, click the "This Window Only" button & the "Calculate All Sizes" check box.
Wait a bit until your file & folder sizes have all been calculated, then click the "Size" column to sort your apps from the fattest to the most anorexic.
Get rid of all your photo files you don't want and/or need. Same goes for those pics off the websites you downloaded (gifs, jpegs, etc.).
Get rid of all your music files you no longer listen too. Especially, if you already have the actual CD/DVDs or you can later redownload from a website.
Use Spotlight to make sure you got rid of everything. You can even trash directly from Spotlight!
Drag what you don't want and/or need to the trash. Better yet, download this neat little shareware app demo called AppZapper. It basically does all the work for you by not only trashing the apps but the apps preference files, caches & all its associated files.
Another software that does the above is AppDelete. Best of all this software is free!
Burn what you want and/or need onto CDs or DVDs.
Not everyone has the luxury of purchasing an external HD and/or Mobile accounts to store their "stuff.”
You can check with your ISP to see if they offer free storage space. Most if not all do now-a-days.
There are thousands if not millions of free storage facilities on the web also. Use your favorite search engine to search them out as they come in different storage sizes to fit your needs & wants.
Check for duplicate fonts.
Applications>Font Book
Select “All Fonts”
If you see any “black dots” next to any fonts this mean you have duplicates and/or multiple versions of these fonts.
To clean this up, select a “black dotted” font or the Apple + click to select multiple dotted fonts;
Edit>Resolve>Duplicates.
What the above does is turns off the duplicates & multiple version fonts. Not delete them.
More than likely the “extras” were installed by other programs and/or other users.
Clear out font caches
Use FontNuke. It does all the work for you. And, best of all it’s FREE.
Printer Drivers
Get rid of all the printer drivers you don’t need & use except the ones for your current printer(s)/scanner(s).
HD>Library>Printers Folder
If you accidently threw something out that you needed for your printer/scanner it can be easily obtained from the manufacturer’s website and/or from the CD that came w/the printer/scanner.
Garage Band
Has about 1GB of loops stored. Get rid of some some them. You surely don’t use, like and/or need them all.
HD>Library>Audio/Apple Loops>Apple>Apple Loops For GarageBand
Or just get rid of the Garage Band app altogether if you don’t use it.
Get rid of extra languages
Strip your computer down to your “native” tongue.
You can do this with a FREE utility called Monolingual. Another app that apparently does all the work for you. I’ve never used it. However, a lot of users here swear by & recommend it highly.
However, there is a warning for *native English speakers*. Make sure you keep BOTH English and English (United States).
Other Resources:
HD Space Checkers:
Disk Inventory X (FREE)
WhatSize (SHAREWARE)
OmniDiskSweeper (FREE)
GrandPerspective (FREE - donation)
Knowledge Base Article http://docs.info.apple.com/article.html?artnum=303602 Mac Maintenance Quick Assist
Scroll down to "4) Prune Through Your Files".
Slimming your hard drive
Rule of thumb: You should never let your hard drive get to where you have only 10-15% of space left.
!http://i50.tinypic.com/izvwo1.gif!

I got my first macbook air about a year ago. awhile ago i started getting these notifications saying "your startup disk is almost full" or "your startup disk is full". i was wondering how to get more space on my startup disk, if that is possible?

i got my first macbook air about a year ago. awhile ago i started getting these notifications saying "your startup disk is almost full" or "your startup disk is full". i was wondering how to get more space on my startup disk, if that is possible?

Freeing Up Space on The Hard Drive
1. See Lion's Storage Display.
2. You can remove data from your Home folder except for the /Home/Library/ folder.
3. Visit The XLab FAQs and read the FAQ on freeing up space on your hard drive.
4. Also see Freeing space on your Mac OS X startup disk.
5. See Where did my Disk Space go?.
6. See The Storage Display.
You must Empty the Trash in order to recover the space they occupied on the hard drive.
You should consider replacing the drive with a larger one. Check out OWC for drives, tutorials, and toolkits.

My startup disk is full, how do I Repair it

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