Linux not recognizing full partition size after being extended using gparted

linuxrrr · 07-01-2012, 11:42 AM

Hello,
I made a clean linux installation on a partition of 10GB and after a while i wanted to increase it's partition size, so I booted into gparted and increased the size of the linux partition to 30 GB. Now, only Gparted recognizes that the size of the partition is 30Gb, linux file manager says it still has only 10GB.
How can i make linux recognize the rest of the partition size?

Thanks in advance

Didier Spaier · 07-01-2012, 12:06 PM

Hello and welcome to LQ,

I would try fdisk or cfdisk to see what they say - or to say what they see

pixellany · 07-01-2012, 04:58 PM

I've never seen fdisk lie about partition size----You say you "booted into GParted"---Please confirm that you shut down Linux, booted from a GParted CD, changed the partition, and then re-booted into Linux. if you just **ran** Gparted, then your running Linux system won't recognize the new partition table until you re-boot.

Also, did you specifically apply the changes in GParted? When you change something, you'll get a display showing the changes, but they are not recorded until you specifically tell it to.

pixellany · 07-01-2012, 05:00 PM

PS:

for a partition with a filesystem, a "resizing" command also modifies the file system. I don't know if any program can alter partition sizes without also re-doing the file system. If that were to happen, it could cause what you are seeing.

suicidaleggroll · 07-01-2012, 06:20 PM

Quote:

Originally Posted by pixellany

PS:

for a partition with a filesystem, a "resizing" command also modifies the file system. I don't know if any program can alter partition sizes without also re-doing the file system. If that were to happen, it could cause what you are seeing.

For shrinking that's true, but I do believe you can increase a partition size without also increasing the size of the filesystem on it. Not 100% on that though.

pixellany · 07-01-2012, 07:16 PM

Quote:

Originally Posted by suicidaleggroll

For shrinking that's true, but I do believe you can increase a partition size without also increasing the size of the filesystem on it. Not 100% on that though.

then there is a separate command to expand the filesystem? (without losing data)

suicidaleggroll · 07-01-2012, 07:21 PM

Quote:

Originally Posted by pixellany

then there is a separate command to expand the filesystem? (without losing data)

Depends on the filesystem. This link has more info:
http://tldp.org/HOWTO/LVM-HOWTO/extendlv.html