Comment 2 for bug 1096307

Hi Steve, this issue can be easily reproduced through either of the following scenario on Ubuntu 12.04.
Assuming Ubuntu 12.04 is located as /sda2, and I have two HDD connected as sda, sdb. sdb4 is formatted as ext4

1. Adding one entry in /etc/fstab which will try to mount a non-existing disk device node. Simulate as failure partition
# <file system> <mount point> <type> <options> <dump> <pass>
/dev/sdc4 /test ext2 defaults 0 0

2. Intentionally corrupt a working partition through DD command to simulate a disk/partition error
    dd if=/dev/zero of=/dev/sdb4 bs=1M count=100
    Then add an entry to found the failure partition
# <file system> <mount point> <type> <options> <dump> <pass>
/dev/sdb4 /disk1 ext2 defaults 0 0

 In either case, we saw system got stuck during mount procedure without any message indicating which partition or disk is having problem and never reach the login prompt.