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Old 13th April 2017, 05:28 AM
novice1 Offline
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disks, partitions, and formatting


It's really my first time to start a thread and I'm not an expert on Linux.

This problem may look simple to you. But I had an experience removing all of my data in the hard disks doing on my own.


I have two hard disks(2TB * 2).

One of them(sdb1) works fine. It's used for backup.

I found that I was using up /dev/mapper/fedora-root which is small, not /fedora-home.

I don't know why It's already been used up 99%.

Please explain like I'm 5. Thanks in advance! Btw, I'm using fedora 19.

[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/fedora-root 50G 27G 21G 57% /
devtmpfs 32G 0 32G 0% /dev
tmpfs 32G 824K 32G 1% /dev/shm
tmpfs 32G 1.4M 32G 1% /run
tmpfs 32G 0 32G 0% /sys/fs/cgroup
tmpfs 32G 196K 32G 1% /tmp
/dev/sda1 477M 119M 330M 27% /boot
/dev/mapper/fedora-home 1.8T 1.6T 29G 99% /home
/dev/sdb1 1.8T 757G 984G 44% /run/media/novice/backup

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Last edited by novice1; 13th April 2017 at 05:36 AM.
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Old 13th April 2017, 08:23 AM
antikythera Offline
Join Date: Dec 2013
Location: United Kingdom
Posts: 5,074
Re: disks, partitions, and formatting

Hi, welcome to the forum. disk usage for sdb1 looks okay, root isn't anywhere near full, it says 57% used which is acceptable.

it's your /home partition which is filling up according to the above stats.

I'd be more concerned with the 80 bad sectors affecting the /boot partition shown in the screenshots from Disks. This is a sign that the HDD is prefail and should be replaced fairly soon. as it stands the drive will work around the bad sectors but you may lose the ability to boot if any more go bad too and data cannot be retrieved by the system.

regarding clearing space from /home, you could empty the browser cache and archive any old documents or media files. there is an argument for running bleachbit here too but you will need to install it if you've never run it before. do not run it with admin rights, just let it clean the pre-selected options and it shouldn't do any damage to your system.

additionally, why are you sticking with Fedora 19? It is no longer supported and won't receive any security or stability fixes apart from new versions of programs. Given you state you backup your data to the second drive, it may be worth clean installing Fedora 25 to a replacement drive and copying back the important documents and files to your home folder afterwards.
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Old 13th April 2017, 01:41 PM
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HaydnH Offline
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Join Date: Feb 2005
Location: London, UK
Posts: 509
Re: disks, partitions, and formatting

The following command will list the files/directories by size in KB sorted from small to large:

# du -sk * |sort -n

so "cd /home", run the command (it will likely take a while the first run), see what the largest directory is, "cd large_path", run the command etc etc.
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Old 21st April 2017, 06:14 AM
novice1 Offline
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Re: disks, partitions, and formatting

Thanks for quick and detailed answers.

Now I just wonder why 'nautilus' doesn't show correct size of the free space in the disk.
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