Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I am wondering about the pie chart in the properties basic tab. I can see blue is used space and white free space but what does the gray part mean. I have been searching with no luck. Thanks in advanced!

Properties Window

share|improve this question

1 Answer 1

up vote 4 down vote accepted

By default the file system reserves 5% for the root user, which is what you're seeing in gray. You can change this using tune2fs. For example, to change the reserved space to 1% you would use:

sudo tune2fs -m 1 /dev/sdb1

where /dev/sdb1 is the location of your drive.

I have tested this successfully on Ubuntu 13.10

share|improve this answer
    
Right, that was it, thanks! Anyway I was worried to reduce the reserved space as you suggested but after some digging I found it is fairly safe to do it since it is not the system drive. And while Ext3 is prone to fragmentation and bad performance above 95% usage, Ext4's multi-block allocator is much more fragmentation resistant, as mentioned by Linux filesystem developer and guru Theodore Ts'o: Re: Reserved block count for Large Filesystem –  SuperMau Nov 23 '13 at 6:57

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.