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I picked up a new laptop just recently and installed Ubuntu Mate 18.04 right away. So, the system is pretty clean.

That being said, here's the problem. I have got some disk space missing. I have got only one 512gb ssd with one partition. The system says I've got only a few gb of free space left. Disk Utility says the whole 512 gb are allocated. Disk analyzer (baobab) shows me the following picture even though I am running it under root:

enter image description here

Do you guys have any ideas what it could be?

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Denis
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    Home partition shows as 457 GB out of 512 GB -- doesn't look like you're "missing" any 300 GB, you just have files you can't account for. – Zeiss Ikon Nov 18 '19 at 12:57
  • @ZeissIkon well, yeah. But if so, how can I access them? And how come there's been 300gb worth of data somehow procedurally generated (?) on a clean system over a week or so. – Denis Nov 18 '19 at 13:00
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    I'd start by examining /home/Denis with "view hidden" turned on. – Zeiss Ikon Nov 18 '19 at 13:03
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    No expert, but usually with these type of questions, it is sometimes wonky log files taken up space. link https://askubuntu.com/questions/17467/what-is-taking-up-so-much-space-on-my-disk-beside-the-filesystem?rq=1 – crip659 Nov 18 '19 at 13:04
  • @ZeissIkon it's the same as what baobab shows – Denis Nov 18 '19 at 13:10
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    Could also be a "counterfeit" or failing SSD. Not uncommon for off-brand flash storage to report an incorrect capacity. Have you run a full fsck scan? – Zeiss Ikon Nov 18 '19 at 13:22
  • @ZeissIkon I have not, but I will. Good idea. – Denis Nov 18 '19 at 13:36
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    Start with ls -al or ls -alh command in your home folder and look for big files. – BlueManCZ Nov 18 '19 at 14:19
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    Thanks guys, i figured it out. Turns out it's been a huge .xsession log file and for some reason baobab wasn't displaying it. – Denis Nov 19 '19 at 15:35

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