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Date:      Sat, 23 Jan 2010 09:06:19 +0800
From:      Fbsd1 <fbsd1@a1poweruser.com>
To:        Christoph Kukulies <kuku@kukulies.org>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Cannot boot FreeBSD (8.0) from USB stick (Dell Inspiron 9400)
Message-ID:  <4B5A4B8B.3030205@a1poweruser.com>
In-Reply-To: <4B59E764.40906@kukulies.org>
References:  <4B581838.8010107@kukulies.org> <4B586142.3020404@a1poweruser.com>	<4B5861E1.7030800@kukulies.org> <4B59AABA.6030301@a1poweruser.com> <4B59E764.40906@kukulies.org>

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Christoph Kukulies wrote:
> Here is some more info:
> 
> The file I copied to the USB stick was
> 
> ftp://ftp.freebsd.org/pub/FreeBSD/releases/i386/ISO-IMAGES/8.0/8.0-RELEASE-i386-memstick.img 
> 
> 
> Actually, I don't remember how I got the image to the USB stick. I 
> believe I used a free tool from HP
> from within Windows XP.
> 
> I will try out your method below now.
> 
> 
> kernel messages at the time usb stick is inserted:
> ugen4.3: <USB 2.0> at usbus4
> umass0: <USB 2.0 Flash Disk, class 0/0, rev 2.00/1.10, addr 3> on usbus4
> umass0:  SCSI over Bulk-Only; quirks = 0x0000
> umass0:1:0:-1: Attached to scbus1
> (probe0:umass-sim0:0:0:0): TEST UNIT READY. CDB: 0 0 0 0 0 0
> (probe0:umass-sim0:0:0:0): CAM Status: SCSI Status Error
> (probe0:umass-sim0:0:0:0): SCSI Status: Check Condition
> (probe0:umass-sim0:0:0:0): UNIT ATTENTION asc:28,0
> (probe0:umass-sim0:0:0:0): Not ready to ready change, medium may have 
> changed
> (probe0:umass-sim0:0:0:0): Retrying Command (per Sense Data)
> da0 at umass-sim0 bus 0 target 0 lun 0
> da0: <USB 2.0 Flash Disk PMAP> Removable Direct Access SCSI-0 device
> da0: 40.000MB/s transfers
> da0: 1921MB (3935000 512 byte sectors: 255H 63S/T 244C)
> GEOM: da0: media size does not match label.
> #
> #
> # fdisk /dev/da0
> ******* Working on device /dev/da0 *******
> parameters extracted from in-core disklabel are:
> cylinders=244 heads=255 sectors/track=63 (16065 blks/cyl)
> 
> /tmp/l12: unmodified, readonly: line 1
> kernel messages at the time usb stick is inserted:
> ugen4.3: <USB 2.0> at usbus4
> umass0: <USB 2.0 Flash Disk, class 0/0, rev 2.00/1.10, addr 3> on usbus4
> umass0:  SCSI over Bulk-Only; quirks = 0x0000
> umass0:1:0:-1: Attached to scbus1
> (probe0:umass-sim0:0:0:0): TEST UNIT READY. CDB: 0 0 0 0 0 0
> (probe0:umass-sim0:0:0:0): CAM Status: SCSI Status Error
> (probe0:umass-sim0:0:0:0): SCSI Status: Check Condition
> (probe0:umass-sim0:0:0:0): UNIT ATTENTION asc:28,0
> (probe0:umass-sim0:0:0:0): Not ready to ready change, medium may have 
> changed
> (probe0:umass-sim0:0:0:0): Retrying Command (per Sense Data)
> da0 at umass-sim0 bus 0 target 0 lun 0
> da0: <USB 2.0 Flash Disk PMAP> Removable Direct Access SCSI-0 device
> da0: 40.000MB/s transfers
> da0: 1921MB (3935000 512 byte sectors: 255H 63S/T 244C)
> GEOM: da0: media size does not match label.
> #
> #
> # fdisk /dev/da0
> ******* Working on device /dev/da0 *******
> parameters extracted from in-core disklabel are:
> cylinders=244 heads=255 sectors/track=63 (16065 blks/cyl)
> 
> parameters to be used for BIOS calculations are:
> cylinders=244 heads=255 sectors/track=63 (16065 blks/cyl)
> 
> Media sector size is 512
> Warning: BIOS sector numbering starts with sector 1
> Information from DOS bootblock is:
> The data for partition 1 is:
> <UNUSED>
> The data for partition 2 is:
> <UNUSED>
> The data for partition 3 is:
> <UNUSED>
> The data for partition 4 is:
> sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
>    start 0, size 50000 (24 Meg), flag 80 (active)
>        beg: cyl 0/ head 0/ sector 1;
>        end: cyl 1023/ head 254/ sector 63
> #
> -- 
> Christoph
> 

The dd command is what is used to copy the memstick.img to USB stick.

The memstick.img is created with the dd command so no compression done. 
It has fixit included and is 3 times larger than the disc-1 iso file. 
Thats why I download the disc-1 iso and run the script to build the img 
on USB stick. So much faster this way.

So I see that both usb sticks you are using are revision rev 2.00/1.10. 
But the stick that boots on your desktop will not boot on the laptop. 
And the stick that boots on the laptop will not boot on the desktop. 
Very strange indeed. This indicates that the pc bios are playing a big 
part in which USB stick it recognizes as bootable.




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