why my usb not booting ????"'
 

Hi ,

I am tying to install rhel 6 usb drive through command line


[root@unknown00197dccf8c8 ~]# umount /dev/sdb
[root@unknown00197dccf8c8 ~]# mkfs.vfat /dev/sdb
mkfs.vfat 3.0.9 (31 Jan 2010)
mkfs.vfat: Device partition expected, not making filesystem on entire device '/dev/sdb' (use -I to override)
[root@unknown00197dccf8c8 ~]# mkfs.vfat -I /dev/sdb
mkfs.vfat 3.0.9 (31 Jan 2010)
[root@unknown00197dccf8c8 ~]# mount /dev/sdb /mnt
[root@unknown00197dccf8c8 ~]# dd if=/root/Desktop/media/software/red.iso of=/dev/sdb
5724736+0 records in
5724736+0 records out
2931064832 bytes (2.9 GB) copied, 289.629 s, 10.1 MB/s
[root@unknown00197dccf8c8 ~]# umount /dev/sdb
[root@unknown00197dccf8c8 ~]#


not booting !!! whats problem

The settings in your system BIOS,
capable of USB
boot device, maybe re-check those.

Is it a USB Flash drive, or external hd ?

I wonder if the boot map is ok.

Is the drive flagged as bootable to the OS,
to your Redhat ??

What do the partitions show as ?

I had a system once with a couple
different Linux on it and had to use
the chroot command to specify which one
to boot to, for GRUB.

Don't know if Friday the 13th has,
anything to do with it ?? ,
just kiddin.

Thanks,


my pendrive is 8GB,
Disk /dev/sdb: 8103 MB, 8103395328 bytes
250 heads, 62 sectors/track, 1021 cylinders
Units = cylinders of 15500 * 512 = 7936000 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/sdb doesn't contain a valid partition table


After copy to usb it shows
[root@unknown00197dccf8c8 ~]# blkid /dev/sdb
/dev/sdb: LABEL="Fedora 10 i386 DVD" TYPE="iso9660"

I used to copy this command to make iso from dvd

dd if=/dev/dvd of=/root/destionation folder/name.iso


i Got message while booting "no operating sysytem found"

when i connect usb it mouted automaticaly label also comes,inside evey files exist

how to know a drive flag bootable ?

try using unetbootin, let it install to the usb.