I have my 640GB USB drive connected to a CentOS 5 server and using fdisk, it seems to show a partition of the correct size, /dev/sdd1, but after mounting, the drive shows only 244M size. Does the message received when running fdisk below mean I should reformat this drive, I can't seemed to figure out how to do that with fdisk. Can someone tell me how to reformat, if needed? The drive is empty, I formatted a while back on a Debian machine....
[root@vhost1 ~]# /sbin/fdisk /dev/sdd
The number of cylinders for this disk is set to 77825. There is nothing wrong with that, but this is larger than 1024, and could in certain setups cause problems with: 1) software that runs at boot time (e.g., old versions of LILO) 2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK)
Command (m for help): p
Disk /dev/sdd: 640.1 GB, 640135028736 bytes 255 heads, 63 sectors/track, 77825 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System /dev/sdd1 1 77825 625129281 83 Linux
Command (m for help): q
[root@vhost1 ~]# mount -t ext3 /dev/sdd1 /home/usb [root@vhost1 ~]# df -h|grep usb /dev/sdd1 244M 6.1M 225M 3% /home/usb [root@vhost1 ~]# ls -lah /home/usb total 21K drwxr-xr-x 3 root root 1.0K May 10 14:38 . drwxr-xr-x 8 root root 4.0K May 9 23:26 .. drwx------ 2 root root 12K May 10 14:38 lost+found [root@vhost1 ~]# du -d 1 -h /home/usb du: invalid option -- d Try `du --help' for more information. [root@vhost1 ~]# du -h /home/usb 12K /home/usb/lost+found 13K /home/usb
From: Robert Fitzpatrick lists@webtent.net
I have my 640GB USB drive connected to a CentOS 5 server and using fdisk, it seems to show a partition of the correct size, /dev/sdd1, but after mounting, the drive shows only 244M size. Does the message received when running fdisk below mean I should reformat this drive, I can't seemed to figure out how to do that with fdisk. Can someone tell me how to reformat, if needed? The drive is empty, I formatted a while back on a Debian machine....
To reformat: umount /dev/sdd1 mkfs.ext3 /dev/sdd1 (use '-c' to check for bad blocks or/and '-m 0' to get the max space... see the manpage)
JD
At Thu, 28 May 2009 19:24:25 -0400 CentOS mailing list centos@centos.org wrote:
I have my 640GB USB drive connected to a CentOS 5 server and using fdisk, it seems to show a partition of the correct size, /dev/sdd1, but after mounting, the drive shows only 244M size. Does the message received when running fdisk below mean I should reformat this drive, I
No, fdisk is giving you a message that only really relates to BIOSs and O/Ss that are now long obsolete. Unless your machine is 1980's or early 1990's vintage, you can safely ignore that message.
can't seemed to figure out how to do that with fdisk. Can someone tell me how to reformat, if needed? The drive is empty, I formatted a while back on a Debian machine....
How long back (?).
Either the version of mkfs.ext3 was an old and limited version (not able to handle such a large drive) OR you did something strange with dd.
You could try reformatting it with the current version of mkfs.ext3 on your CentOS 5 system:
# umount /home/usb # mkfs.ext3 /dev/sdd1
This *should* format the whole partition.
[root@vhost1 ~]# /sbin/fdisk /dev/sdd
The number of cylinders for this disk is set to 77825. There is nothing wrong with that, but this is larger than 1024, and could in certain setups cause problems with:
- software that runs at boot time (e.g., old versions of LILO)
- booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK)
Command (m for help): p
Disk /dev/sdd: 640.1 GB, 640135028736 bytes 255 heads, 63 sectors/track, 77825 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System /dev/sdd1 1 77825 625129281 83 Linux
Command (m for help): q
[root@vhost1 ~]# mount -t ext3 /dev/sdd1 /home/usb [root@vhost1 ~]# df -h|grep usb /dev/sdd1 244M 6.1M 225M 3% /home/usb [root@vhost1 ~]# ls -lah /home/usb total 21K drwxr-xr-x 3 root root 1.0K May 10 14:38 . drwxr-xr-x 8 root root 4.0K May 9 23:26 .. drwx------ 2 root root 12K May 10 14:38 lost+found [root@vhost1 ~]# du -d 1 -h /home/usb du: invalid option -- d Try `du --help' for more information. [root@vhost1 ~]# du -h /home/usb 12K /home/usb/lost+found 13K /home/usb
-
John Doe -
Robert Fitzpatrick -
Robert Heller