Confusing USB Filesystem Problem (Can't Wipe Ext3 Filesystem)
Hi all, I have this confusing problem with an externally (USB2) mounted hard drive. I have it formatted as an ext3 partition and I want to wipe that and format it with another filesystem. I've used cfdisk, fdisk and parted. Every time I successfully delete partition 1 (the only partition), it goes well, says "free space" for the full size of the drive. The minute I create a linux label (type 83), the drive automounts as the old filesystem with all the old files still in tact. (!)
I recall having this similar problem with a FAT partition and the cfdisk man page tells me to do a dd if=/dev/zero of=/dev/sdf1 bs=512 count=1. That also works, but when I create a new label, the old filesystem and files are still there. (I've tried dd if=/dev/zero of=/dev/sdf bs=512 count=1 too)
I even booted into a Windows partition and zapped that partition using their native disk mgmnt utils and got the same thing (though I didn't format as NTFS --should have tried, but I don't want to boot back into Windows).
This is Ubuntu Feisty, so I'm wondering if they have some weird protection in place, or if I'm just missing something really obvious.
Thanks for any help.