Re: Can't boot from pendrive

[Rodolfo Medina <rodolfo.medina@gmail.com>]

Brian <ad44@cityscape.co.uk> writes:

> On Sat 24 Jan 2015 at 12:26:02 +0000, Rodolfo Medina wrote:
>
>> From:
>> 
>>  http://www.us.debian.org/CD/netinst/
>> 
>> I downloaded the file debian-7.8.0-i386-netinst.iso and copied it onto a
>> pendrive with:
>> 
>>  $ dd if=debian-7.8.0-i386-netinst.iso of=/dev/sdc bs=4M; sync

That was actually `sdb1', not `sdc', sorry.


> That's an ok command.
>
>> , but then can't boot from it even though the BIOS is - apparently -
>> configured so to do that.  Why?
>
> Assuming the machine can boot from USB, check the BIOS settings again.
>
> On a running system, please post the outputs of
>
>    fdisk -l debian-7.8.0-i386-netinst.iso
>
> and, after plugging in the pendrive,
>
>    fdisk -l /dev/sdX
>
> You'll get "X" from dmesg.


Here is the output:

# fdisk -l debian-7.8.0-i386-netinst.iso 
You must set cylinders.
You can do this from the extra functions menu.

Disk debian-7.8.0-i386-netinst.iso: 0 MB, 0 bytes
64 heads, 32 sectors/track, 0 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk identifier: 0x178e0fca

                        Device Boot      Start         End      Blocks   Id  System
debian-7.8.0-i386-netinst.iso1   *           1         277      283616   17  Hidden HPFS/NTFS

# fdisk -l /dev/sdb1
You must set cylinders.
You can do this from the extra functions menu.

Disk /dev/sdb1: 0 MB, 0 bytes
64 heads, 32 sectors/track, 0 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk identifier: 0x178e0fca

     Device Boot      Start         End      Blocks   Id  System
/dev/sdb1p1   *           1         277      283616   17  Hidden HPFS/NTFS