58.66GB used on newly formatted external disc? - SORTED

Forum rules
Before you post please read this
Post Reply
Lilliburlero
Level 1
Level 1
Posts: 5
Joined: Wed Feb 28, 2018 7:22 am

58.66GB used on newly formatted external disc? - SORTED

Post by Lilliburlero » Sat Mar 03, 2018 8:51 am

Hi All,
Hope someone can help.
I have reformatted a 4TB external disc as Ext4 and made a new partition.
This is all using GParted.
But there is only 3,64 available, with 58.66GB used.
I don't understand this.
What's it being used by?
And why?
Last edited by Lilliburlero on Sat Mar 03, 2018 1:47 pm, edited 1 time in total.

User avatar
Pierre
Level 16
Level 16
Posts: 6543
Joined: Fri Sep 05, 2008 5:33 am
Location: Perth, AU.

Re: 58.66GB used on newly formatted external disc?

Post by Pierre » Sat Mar 03, 2018 8:58 am

that is quite possible:

one explanation is just how the HDD manufacturer states the size of their new drive,
and the difference between that and the given size after formatting that hdd . . .
- there is actually a difference :!:

EG: a 2TB is 2TB RAW / Unformatted drive,, and 1,86TB after formatting that drive.
so there is a 14GB difference, right there
& doubling that to a 4TB drive, could give a 28Gb difference in the disk size(s
but, that's only 50% of what you are losing, so there may also be a better explanation.

and if your drive has only 3,64 TB available, then that would indicate a loss of 36GB rather than your 58.66GB . .
so, there is something else going on, instead.
:?
Image
Please edit your original post title to include [SOLVED] - when your problem is solved!
and DO LOOK at those Unanswered Topics - - you may be able to answer some!.

Lilliburlero
Level 1
Level 1
Posts: 5
Joined: Wed Feb 28, 2018 7:22 am

Re: 58.66GB used on newly formatted external disc?

Post by Lilliburlero » Sat Mar 03, 2018 11:00 am

Thanks Pierre,
There appears to be some conflicting informatio.
The disc properties says: Total Capacity 3.9TB, 200.1 GB Used, 3.7TB Free.
GParted says: Size 3.65TB, Used 58.66GB, Unused 3.58TB.

So one thinks there's 200 GB used and the other thinks it's 58.66GB used.
Very strange.

User avatar
chrisuk
Level 5
Level 5
Posts: 568
Joined: Thu Jun 12, 2008 6:16 am

Re: 58.66GB used on newly formatted external disc?

Post by chrisuk » Sat Mar 03, 2018 11:47 am

Ext4 reserves a percentage of the partition when formatted so, for example, root could sort out a partition than ran out of space.

Assuming your partition is sdb1 (which it may not be) - type sudo tune2fs -l /dev/sdb1 | grep 'Reserved block count' into the terminal to see how much is being reserved. Anything reserved won't show up in standard file managers etc.

Oh, if you know what you're doing, and feel you need the space rather than a "safety net" typing sudo tune2fs -m 0 /dev/sdb1 will reclaim the reserved space.
Chris

Manjaro MATE - MX Linux - LMDE MATE

Lilliburlero
Level 1
Level 1
Posts: 5
Joined: Wed Feb 28, 2018 7:22 am

Re: 58.66GB used on newly formatted external disc?

Post by Lilliburlero » Sat Mar 03, 2018 12:16 pm

Reserved block count: 48837708

Yes that make more sense.
Thanks Chris.

Post Reply

Return to “Mounting Partitions”