trying to format a partition as ext4
getting following error

[root@f14 ~]# mkfs.ext4 /dev/sdc7
mke2fs 1.41.12 (17-May-2010)
mkfs.ext4: No such device or address while trying to determine filesystem size
[root@f14 ~]#

I did this same command earlier today and it worked.

Since then, I made some kind of error copying to that partition,
after it was mounted to /mnt/sdc7.
So I was trying to reformat.

Also, now if I try to mount it I can't even see what is in it:

[root@f14 ~]# mount /dev/sdc7 /mnt/sdc7
mount: /dev/sdc7 is not a valid block device

This must be newbie stuff, but I am lost.


mount shows sdc9 for example
/dev/sdc9 on /grubp type ext3 (rw)

but fdisk -l shows only sda, sdb,
nothing for sdc

df -kh does show sdc9, nothing for sdc7
root@f14 ~]# df -kh
Filesystem Size Used Avail Use% Mounted on
/dev/sda8 17G 8.1G 7.5G 52% /
tmpfs 1007M 444K 1006M 1% /dev/shm
/dev/sdc9 16M 1.5M 13M 11% /grubp
/dev/sda3 21G 9.2G 11G 48%
/media/54c84c0a-040b-43bd-8887-202519baaae2_
/dev/sda6 8.1G 7.0G 1.1G 87% /media/rootusb6_
/dev/sda7 16G 7.3G 7.4G 50%
/media/c2f44d00-09e6-45b2-9a14-a0a765716005_
/dev/sda2 21G 7.5G 13G 38% /media/rootusb2_
/dev/sda1 24G 18G 5.8G 76% /media/rootusb_
[root@f14 ~]#



Jack
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On 11/29/2011 02:54 PM, jackson byers wrote:
> trying to format a partition as ext4
> getting following error
>
> [root@f14 ~]# mkfs.ext4 /dev/sdc7
> mke2fs 1.41.12 (17-May-2010)
> mkfs.ext4: No such device or address while trying to determine filesystem size
> [root@f14 ~]#
>
> I did this same command earlier today and it worked.
>
> Since then, I made some kind of error copying to that partition,
> after it was mounted to /mnt/sdc7.
> So I was trying to reformat.


try this:

# yum install gparted
# gparted


It will help you.

gene


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