partion problem

[george.shoni]

I installed ubuntu10.4 .when I tried to make new partion .there is an error
mkfs.ext3: Device size reported to be zero. Invalid partition specified, or
partition table wasn't reread after running fdisk, due to
a modified partition being busy and in use. You may need to reboot
to re-read your partition table
any one give replay..

[falko]

What exactly did you do (what commands?) when you created the partition?

[Rubi1200]

If you are on a LiveCD/USB, please post the output of this command:


sudo fdisk -l
(lowercase L not 1)

[george.shoni]

What exactly did you do (what commands?) when you created the partition?

I did this camaands
#fdisk /dev/sda
:n
create partion size
:w
#mkfs.ext3 /dev/sda4(new created partion no.)
then I got this error