[Bug 1245147] [NEW] Ubuntu 13.10 does not boot from USB drive formatted in ext4

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I have tried to perform a normal installation of ubuntu 13.10 on a
usb3.0 drive sandisk 16Gb, formatted ext4.

I do not how to provide you more information since grub does not even
start and a violet screen hangs. I was suspecting a corruption of the
usb mbr and I have tried updating directly the grub the I have on the
hard disk used by ubuntu 13.04 and windows 7 with the key plugged in but
again just violet screen and everything hangs.

If I create a live usb in fat32 I do not have any problem. Could you
please verify if there is a bug in ext4?

Before on the same usb I had Ubuntu 13.04 but in UEFI mode since I was
using a netbook UEFI. Now for sure I have a bios legacy and for this
reason I have removed everything to reinstall ubuntu 13.10 in the mbr.

The usb key has been formatted in gparted recreating again the partition
table in msdos as follow:

Le voci nella tabella delle partizioni non sono nello stesso ordine del
disco.

Disk /dev/sdb: 15.5 GB, 15504900096 bytes
64 testine, 32 settori/tracce, 14786 cilindri, totale 30283008 settori
Unità = settori di 1 * 512 = 512 byte
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Identificativo disco: 0x00018829

Dispositivo Boot      Start         End      Blocks   Id  System
/dev/sdb1   *        2048    13632907     6815430   83  Linux
/dev/sdb2        13635582    30281727     8323073    5  Esteso
/dev/sdb5        13635584    14684159      524288   82  Linux swap / Solaris
/dev/sdb6        14686208    30281727     7797760    7  HPFS/NTFS/exFAT

** Affects: grub
     Importance: Undecided
         Status: New

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New

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Ubuntu 13.10 does not boot from USB drive formatted in ext4
https://bugs.launchpad.net/bugs/1245147
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