I just retried without unmounting /media/disk Here the exact messages I get: Command (m for help): p
Disk /dev/sdb: 1031 MB, 1031798784 bytes 16 heads, 32 sectors/track, 3936 cylinders Units = cylinders of 512 * 512 = 262144 bytes Disk identifier: 0x04c504c4 Device Boot Start End Blocks Id System Command (m for help): n Command action e extended p primary partition (1-4) p Partition number (1-4): 1 First cylinder (1-3936, default 1): Using default value 1 Last cylinder or +size or +sizeM or +sizeK (1-3936, default 3936): 2000 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. Syncing disks. -- fdisk doesn't write partition table https://bugs.launchpad.net/bugs/58331 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs