disk space disappearing in Yosemite

[tomthebom]

Hi folks, somehow I do not manage to get rid of the following problem:

Unfortunately I decided to buy myself a model with flashdrive hard disk.
Somehow it really starts to annoy me: I am running most of my system from the 125GB flash drive, only Apple loops from an external 64 GB SD card I have permanently inserted in the SD card slot. What ever I delete from the flash drive, the space gets "eaten" by something over a period of time. After I removed something like 13 GB, it takes a few hours before the system tells me that I am running low on disk space. Usually that is, when there is around 1GB left. After a restart I make it up to around 4 GB again, but they disappear quickly to somewhere...
I have been in assorted forums, emptied my caches, made a time machine backup and am using programs like Daisy Disk, Disk Doctor and you name it to keep it all down, but ... hey, it is supposed to be a "Mac"... I somehow expect some peace to work... Any friendly soul, that can relief my pain?


(2,6GHz 13'MBP, retina, 8GB memory, OSX 10.10.3)

 

[T'hain Esh Kelch]

The system makes cache files on the boot drive, it is normal and is expected to take up space. 4 GB is waaay to little space for the system to run optimally - It should be around 15GB in my experience.

 

[hiddenmarkov]

Would you have any apps that generate log files/temp file/etc?

Are you deleting files and actually seeing disk space released in disk utility. And odd feature I noticed on massive deletions is my system drive would not register the free space I thought I would have. The easy fix to this is turn off time machine for a little while.

Forget the technical reason for why this works when I saw the trick posted somewhere. I do know in my case it works.