Era o número mesmo, coloquei vários menos o "9"
Porém agora deu outro "pau", quando eu seleciono a .iso no menu do grub aparecem várias mensagens, como abaixo:
"1287149830)
[ 0,916736] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[ 0,916766] EDD information not available
[ 0,957179] md: Waiting for all devices to be available before autodetect
[ 0,957212] md: If you don't use raid, use raid=noautodetect
[ 0,957314] md: Autodetecting RAID arrays
[ 0,957344] md: Scanned 0 and added 0 devices
[ 0,957374] md: autorun ...
[ 0,954403] md: autorun DONE.
[ 0,957516] VFS: Cannot open root device "(null)" or unknown -block (104,1)
[ 0,957549] Please append a correct "root=" boot option; here are the available partitions:
[ 0,957586] kernel panic - not sincing: VSF: Unable to mount root fs on unknown-block (104,1)
[ 0,957620] Pid: 1, comm: swapper Not tainted 2.6.35-22-generick #33-Ubuntu
[ 0,957651] Call trace:
[ 0,957683] [<ffffffff815863e0>] panic+0x90/0x111
[ 0,957716] [<ffffffff81aee2ba>] mount_black_root + 0x1ea/0x29e
[ 0,957747] [<ffffffff81aee3c4>] mount_root + 0x56/05a
[ 0,957778] [<ffffffff81aee538>] prepare_namespace+ 0x170/1a9
[ 0,957810] [<ffffffff81ced8c9>] kernel_init+0x1ad/0x1bd
[ 0,957841] [<ffffffff8100aee4>] kernel_thread_helper+0x4/0x10
[ 0,957872] [<ffffffff81aed71c>] ? kernel_init+0x0/0x1bd
[ 0,957903] [<ffffffff8200aee0>] ? kernel_thread_helper+0x0/0x10"
Muito obrigado pela resposta e parabéns pelo tutorial novamente, pintinho!