So something's swallowing about 800gb of disk space on my mac.   I've ran Disk Inventory X and Omni Sweeper, and both show that my main OS drive only houses 30 GB worth of data. 10GB of that is Home folders from the network share, and the rest I'm guessing is OS based guff.  But where the hell is the other 200 or so?!   Any ideas?  Thanks.
122610
I have a 128gb MacBook Air running Lion. I am constantly having issues with disc space, but have no idea what is consuming it all. When I look at the disc utility break down, it says about 80% of the used space is taken up by 'Other' while the remaining 20% is photos, music and applications.  I've searched everywhere but have no idea what is using all this space. The biggest program I have on is Photoshop and perhaps XCode. I dont have any video files and I dont even tend to save .PSDs.  Would anyone know what could be taking up this space?  Thanks!
5568
I have a 250 GB SSD installed as my primary disc on which I have Win 10 installed. I just recently realized that the explorer overview &amp; the windows disc property dialog stated, that there are 200 GB used &amp; only 31 GB free on that disk.    Since I was curious on where that much used space came from, I started the free application WinDirStat which told me that there were only 62 GB used on C.    Also if I select everything under C with hidden files &amp; system folders shown in the explorer, the properties dialog states that those are only 62,5 GB in sum.    Where do the 200 GB used space come from which are shown in the disc overview?
19359
I thought Mavericks was suppose to utilize RAM memory better, thus run smoother.  Running ML on Mac mini 2012, with 16GB RAM...always running smoothly even with over a dozen apps running.  Now, after installing Mavericks, my Mac is SLOW, eating up RAM like crazy! Looking over usage, of the 16GB of installed memory...on average it uses 10-14 GB RAM when barely running a few apps!!!   There is this kernel_task that is always running with over 1GB of RAM and most apps are not taking that much RAM, so what is using up all my RAM?! File cache? It shows very high in that new description, with about 1/3 of my total RAM
10374
I have only one disk in my computer, a 80 GB SSD. It is formatted as a single ext4 partition (no swap), and all the usual folders are installed on it (I keep lots of data on external media, but /home and all the rest is on the SSD).   Today I booted it and I got a message that the drive is full. I opened Disk Usage Analyzer to look at what takes up space. It insists that 67.8 GB of the disk are used, and that / is taking up 36.4 GB. Which leads to the question, where are the missing 30 GB, if not on the file system?!    Just to have a comparison, I added up all the sizes of all readable folders listed in Nautilus as subfolders of / (including the hidden ones). I got 20.9 GB. Trash was unreadable, but I know it has 16.2 GB, so the sum is 36.1 GB, around the same as what Disk Usage Analyzer is reporting. There were some system folders which were unreadable, like proc, but I doubt that they add up to 30 GB - else it wouldn't be possible to install Ubuntu on small disks, and I've seen it run on 2.5 GB. I think they must be the 0.3 GB difference between my calculation and the Disk Usage Analyzer's report.   So I'd like to know, what is eating up these 30 GB and how do I get it to free them?     Edit with answers to CYREX's questions   Booted from Ubuntu 10.10 64-bit live CD (same as my system).  fsck result:   root@ubuntu:~# fsck /dev/sda1 fsck from util-linux-ng 2.17.2 e2fsck 1.41.12 (17-May-2010) /dev/sda1: clean, 265956/4890624 files, 18073343/19537408 blocks  Booted from the SSD. Emptied the trash, and the 16 GB from there are now free. The 30 GB are still missing.    I'm not experienced enough to know what counts as weird in a log. Here are my messages log and my syslog since last boot. Maybe you can find something in them:       Here it got really strange. I plugged in an external 500 GB HDD. Disk Usage Analyzer overreported the available space, then showed space missing (76 GB used, but only 24 in folders).      Booted again from the LiveCD, started the Disk Usage Analyzer from it and got the same results as from the installed Ubuntu, within 1-2 GB.   Edit with answer to CodeMonk:  That would have been a nice solution, but the partition is really 80 GB - I mean 74 GB + marketing "error", anyway the whole disk is formatted. It also shows that over 50 GB are used, so where are the 30 GB if not in files and folders?    GParted also reports the correct size of the external HDD.
35231
Why does my MBP sometimes report VM Size: 300+ GB in Activity Monitor under System Memory tab, when my hard disk size is only 250 GB (total) and RAM is 4GB? I know it can't magically get that extra space, but what is it trying to tell me?
71880
I am using a Macbook air.  64GB.  My user directory has used 20.47GB  Disk Utility shows 'Other' is 41.33GB and I only have 2.9GB free.  What tools or command line commands can I use to find out what is taking up large amounts of this.  I can use finder with all files and sort by size but that is already about my directory and the space taken seems outside of my directory.
24690
This is the disk storage info:    This is the Applications folder info:    Why is the storage usage so high and how can it be reduced? This is on a MacBook Pro Retina 13" with OSX 10.9.5.  Edit: I had tried all the suggestions made by @user3439894 in his answer but didn't mention it before posting.
12673
I've run into a problem on one of my servers running 16.04: there is no disk space left.  I have no idea what is taking up the space. Is there a command to list the current directory sizes, so I can traverse and end up in the directory taking up all the space?
11120
I have a 250G disk on my Mac with around 100G in use. But the system reports only around 20G of free space. I'm using macOS 10.13.2. I have the problem at least since the upgrade to High Sierra, but probably also before.  "About This Mac" --> "Storage" reports that "System" is using around 180G. But if I check the complete disk, it looks like that:  $ sudo du -cxhd 1 /   0B    /.HFS+ Private Directory Data 1.0K    /home 4.3G    /usr 4.2G    /.Spotlight-V100 1.0K    /net  34G    /nix   0B    /.PKInstallSandboxManager   0B    /.PKInstallSandboxManager-SystemSoftware 2.6M    /bin   0B    /Network 1.1M    /sbin 3.8G    /Library   0B    /.Trashes 6.5G    /System 476K    /.fseventsd du: /private/var/db/ConfigurationProfiles/Store: Operation not permitted du: /private/var/folders/z7/[...]/0/SafariFamily: Operation not permitted du: /private/var/folders/z7/[...]/0/com.apple.LaunchServices.dv: Operation not permitted du: /private/var/folders/z7/[...]/0/com.apple.nsurlsessiond: Operation not permitted du: /private/var/folders/z7/[...]/0/com.apple.routined: Operation not permitted du: /private/var/folders/zz/[...]/0/com.apple.nsurlsessiond: Operation not permitted 8.0G    /private 8.6M    /.DocumentRevisions-V100   0B    /.vol  32G    /Users  11G    /Applications 207M    /opt 5.0K    /dev 4.0K    /Volumes   0B    /cores 104G    / 104G    total   df also says that only 20G are available:  $ df -h / Filesystem     Size   Used  Avail Capacity iused               ifree %iused  Mounted on /dev/disk1s1  234Gi  211Gi   20Gi    92% 4019132 9223372036850756675    0%   /   Any tool I was using (Finder, Disk Inventory X, etc.) shows more or less the same numbers like df and du.  Output of mount:  $ mount /dev/disk1s1 on / (apfs, local, journaled) devfs on /dev (devfs, local, nobrowse) /dev/disk1s4 on /private/var/vm (apfs, local, noexec, journaled, noatime, nobrowse) map -hosts on /net (autofs, nosuid, automounted, nobrowse) map auto_home on /home (autofs, automounted, nobrowse)   I read and tested many, many things like:         ... but with no success. So what could consume more than 100G of disk space without showing up in any tool?  Update  Running „First Aid“ in recovery mode:   What does this error message mean?  error: btn:1: invalid key order (1) oid 440198 / oxid 114577 fsroot tree is invalid.   Update 2018-01-25  Another report of the same error:  (but no answers, yet)  I'm pretty sure this file system error is the root cause for the missing disk space. But I have no idea how to fix that. I was hoping that 10.13.3 would maybe solve it, but it didn't change anything. I guess I need to reinstall...
20993
This is from my thinkpad t450s which has a Samsung 240GB SSD. It has been running fine (and still is). But I suddenly noticed one morning that my D: drive had filled up overnight. This is a surprise because I hardly do anything to occupy disk space other than browsing the web, and reading pdfs.  D: drive is 110 GB in size and in MyComputer it shows that 87.9 GBs of it has been used. But when I go into the drive in windows explorer, select all files and folders and then do a file size query it shows that the total size occupied by files and folders is 24.2 GB (there's no change of this even if I select hidden folders, system folders etc). Page file is disabled on the D: drive and the only one on C: drive is system managed. I have also disabled system restore on all partitions.   Surprisingly the disk usage is only abnormal as such in D: drive only. I have checked with WinDirStat, it shows up usage as 24.2 GB. But when run with CCleaner it shows file usage of 87.9 GB and describes the ~60 GB of unexplained usage as "other files".  My question is how can I find this mysterious disk usage/bloat that Windows Explorer cant see and only CCleaner classifies as 'other files' ? Is this a sign of disk wear with some random corrupted bit sectors ? I have checked SSD health and SMART data with software and almost all of them showed no signs of errors or warnings.
115411
I did a quick, pseudo-system audit this morning and found an unexpected directory hogging up ~10GB of space on my drive. I assume that it's a remnant from a reasonably recent upgrade to XCode 4, but that's more of a guess than anything else.  I'm not an Objective-C/Cocoa developer. XCode is really installed just to support Homebrew. Off the top of my head, I can't think of anything else that I do with it.   Are these older 3.2.x directories safe to delete if I can reinstall Xcode 4 or will doing so make kittens cry?
57887
We had our samba server (ubuntu 8.04 ltr) share fill up the other day but when I went to look at it I cant see any of the shares have to much on them  we have 5 group shares and then each users has an individual share  one users has 22gigs of stuff a few others have 10-20mb of stuff and everyone else is empty  so maybe like 26gigs total  I deleted a few files yesterday and freed up about 250mb of space today when i checked it it was completely full again and i deleted some older files and freed up about 170mb of stuff but i can watch it slowly creep down in free space.  I keep running a df -h  Filesystem           1K-blocks      Used Available Use% Mounted on /dev/sda1            241690180 229340500    169200 100% / varrun                  257632       260    257372   1% /var/run varlock                 257632         0    257632   0% /var/lock udev                    257632        72    257560   1% /dev devshm                  257632        52    257580   1% /dev/shm lrm                     257632     40000    217632  16% /lib/modules/2.6.24-28-generic   /volatile  what can I do to try to hunt down whats taking up so much of my hdd? (im fairly new to unix in general so i apologize if this is not well explained)
116899
On my Amazing 2GB EeePC Surf, I have no more space left!  This is quite normal, and it happens every now and then. Just delete a few large, unneeded files and everything should be good, right?  So I go and find a 2MB file in /tmp, and rm -rf it. Check free space again, and -- still nothing?!  I had to remove about 30MB of files before it registered some free space.  Now, my question is, what's up with this strange behaviour?
59832
I am asking myself which constellation is better: should I stock up my RAM up to 16GB (from 8GB), or should I buy a SSD with 128GB??   I really dont know :/  Cheers!  BTW: My macbook supports 16GB RAM, i already checked this ;)
35037
I recently noticed that one of my external hard drive seems to be missing a lot of space. It was recommended that I try WinDirStat, as it could help identify how much space each file was taking up. This is the result:     As you can see, there is about 244.7GB "unknown" usage.  Doing a bit of research online, the most common suggestion was (a) Recycle Bin and (b) System Volume Information.  (a) As you can see, empty. To double check, I ran Disk Cleanup. It confirmed that it was empty. (Note that a new file appeared by the time I took this screenshot, but it's only 129 Bytes.)  (b) Harder to tell. However, according to various forums, the most common reason for System Volume Information to grow large is due to System Restore Files. I had a look, and it is definitely turned off for this drive, as seen here:     What else could be causing this issue? It is an enormous amount of storage to have gone missing!
26485
Time Machine stopped this morning, stating it has too little disk space left. It wants to back up 200 gigs, but my local hard drive has 240 gig used and 150 gig are excluded in the Time Machine options, so this leaves 90 gigs of data at most that can be backed up, and I am pretty sure only very few files have changed (no big update or similar). So I would estimate a backup of, at most, 1 gig.  How can this happen? Any idea?
10146
As the output of df -h shows here, something is eating up 5GB of free space. So, it's not available to use.   I'm also noticing sometimes that the hard disk gets filled up to 100% sometimes. So, I had to restart the machine or delete some unncessary files. Only noticed these in /home partition. Don't know whether these two are related, but appreciate if anyone can put some insight into this.  $ df -h Filesystem            Size  Used Avail Use% Mounted on /dev/sda8             100G   92G  2.7G  98% /home