with a few receivers the usb version started only when the usb-stick formated with this parameters
/sbin/mkfs.ext3 -I 128 -b 4096 /dev/sdax ( where x = sda1,sda2 or other you real name partition from you usb-stick)
Example
/sbin/mkfs.ext3 -I 128 -b 4096 /dev/sda1
I'm sorry to say that it did not work. I have installed PGI's Multiboot with this configuration (I'm booting with 1), maybe that is the problem?
0 - boot PGI from internal flash memory
1 - boot PGI from external USB device sdb1 (when you have internal HDD as sda used for swap/media)
2 - boot PGI from external USB device sdb2 (when you have internal HDD as sda used for swap/media)
3 - boot PGI from internal SATA HDD device sda3 (when sda1/sda2 is used for swap/media)
4 - boot PGI from internal SATA HDD device sda4 (when sda1/sda2 is used for swap/media)
5 - boot PGI from internal SATA HDD device sda5 (when sda1/sda2 is used for swap/media)
6 - boot PGI from external USB device sda3 (when you do NOT have internal HDD and sda1/sda2 is swap/media)
7 - boot PGI from external USB device sda4 (when you do NOT have internal HDD and sda1/sda2 is swap/media)
8 - PGI boot pause (pauses boot sequence and provides network access to fix problems with db.dat or pgi.conf)
9 - PGI settings restore (see the BACKUP_DIR option in pgi.conf)
I figured that it didn't matter if it was PGI I was booting from sdb1 or INDB.
EDIT: It seems indeed to be the problem. I installed another multiboot config and now it seems to boot properly. Thanks