I used fdisk /dev/sda
to create an sda6 partition. Now I want to format it using the mkfs.ext4
command. I am using CentOS 6.5 Linux distro. But when I run this command I get following error
mkfs.ext4
Could not stat /dev/sda6 --- No such file or directory
The device apparently does not exist; did you specify it correctly?
I am new to Linux and will appreciate any and all help. I have tried this with and without "sudo" and in both cases I get the same result.
[root@server1 ~]# sudo fdisk /dev/sda
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): n
First cylinder (1530-3264, default 1530): 2042
Last cylinder, +cylinders or +size{K,M,G} (2042-3264, default 3264): +50MB
Command (m for help): p
Disk /dev/sda: 26.8 GB, 26843545600 bytes
255 heads, 63 sectors/track, 3263 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00002158
Device Boot Start End Blocks Id System
/dev/sda1 * 1 511 4096000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 511 1020 4096000 82 Linux swap / Solaris
Partition 2 does not end on cylinder boundary.
/dev/sda3 1020 1530 4096000 83 Linux
/dev/sda4 1530 3264 13925376 5 Extended
/dev/sda5 1531 2041 4096000 83 Linux
/dev/sda6 2042 2048 56227+ 83 Linux
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
Syncing disks.
[root@server1 ~]# mkfs.ext4 /dev/sda6
mke2fs 1.41.12 (17-May-2010)
Could not stat /dev/sda6 --- No such file or directory
The device apparently does not exist; did you specify it correctly?
After restart - >
Command (m for help): p
Disk /dev/sda: 26.8 GB, 26843545600 bytes 255 heads, 63 sectors/track, 3263 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00002158
Device Boot Start End Blocks Id System /dev/sda1 * 1 511 4096000 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 511 1020 4096000 82 Linux swap / Solaris Partition 2 does not end on cylinder boundary. /dev/sda3 1020 1530 4096000 83 Linux /dev/sda4 1530 3264 13925376 5 Extended /dev/sda5 1531 2041 4096000 83 Linux /dev/sda6 2042 2048 56227+ 83 Linux
Command (m for help): w The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or resource busy. The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8) Syncing disks.
[root@server1 ~]# partx /dev/sda
1: 2048- 8194047 ( 8192000 sectors, 4194 MB)
2: 8194048- 16386047 ( 8192000 sectors, 4194 MB)
3: 16386048- 24578047 ( 8192000 sectors, 4194 MB)
4: 24578048- 52428799 ( 27850752 sectors, 14259 MB)
5: 24582144- 32774143 ( 8192000 sectors, 4194 MB)
6: 32788665- 32901119 ( 112455 sectors, 57 MB)
[root@server1 ~]# mkfs.ext4 /dev/sda6
mke2fs 1.41.12 (17-May-2010)
/dev/sda6 is apparently in use by the system; will not make a filesystem here!
[root@server1 ~]#
IMPORTANT i noticed that fdisk /dev/sda - n - 6 - w, partx, mkfs.ext4 /dev/sda6 worked on red hat 6.5 rhel i have but is not working for CentOS 6.5. i don't know why. Thanks