umount problem

[tdashroy]

Okay so I haven't had this problem 'till today. I reformatted this usb flash drive and renamed it, and now I am unable to unmount it with the command


umount /media/school_drive

Whenever I run this command I get the following error


umount: /media/school_drive is not in the fstab (and you are not root)

Can someone explain to me what it means by it is not in the fstab? I have never had any trouble with this before and I don't remember changing anything in the fstab. The commands I used to reformat and rename my drive were


sudo fdisk /dev/sdg
sudo mkfs.ntfs /dev/sdg1
sudo ntfslabel /dev/sdg1 school_drive

Here is my fstab


# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# /dev/sda5
UUID=d1c331e8-b0d5-4587-8474-3471a438b0ba / ext3 relatime,errors=remount-ro 0 1
# /dev/sda6
UUID=b3b0d97f-8761-4bb8-93b3-d213b015c38d none swap sw 0 0
/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0
/dev/scd1 /media/cdrom1 udf,iso9660 user,noauto,exec,utf8 0 0

Any help or suggestions as to how I can get this back to normal would be much appreciated. Thanks

-Troy

[x33a]

try unmounting it with sudo.

alternatively, when it's mounted find out the device name with "df", something like sda,sdb,etc..

then, sudo umount /dev/sdb (assuming sdb is the flash drive).

[tdashroy]

Thanks for the reply, and yea it works with sudo, but I was wondering how I could get it back to where I didn't have to use sudo. I was also wondering what I did to cause this.

[x33a]

maybe this can help.

http://wiki.ubuntu.org.cn/UbuntuHelp:UsbFlashDrives

if you manually mount the drive, i think it cannot be unmounted without sudo.

[tdashroy]

Alright cool, that wiki helped me out. I ended up just reformatting it to be FAT32 instead of NTFS, and the wiki redirected me to one where that helped me rename the drive, which was my ultimae goal in the first place! Thank you much!