I didn't think you could. I know I never could when I had an external
HD connected to my USB. Anyway, my friend now has an older HP machine
he picked up, with which he is having a problem getting it to boot. He
says the BIOS states the 'boot order' to be USB Device followed by
Hard Drive (c:\). Strangely, so he says, when he put a bootable CD
disk in the CD Drive thereon, the system booted up from there.
gecko wrote:
> I didn't think you could. I know I never could when I had an external
> HD connected to my USB. Anyway, my friend now has an older HP machine
> he picked up, with which he is having a problem getting it to boot. He
> says the BIOS states the 'boot order' to be USB Device followed by
> Hard Drive (c:\). Strangely, so he says, when he put a bootable CD
> disk in the CD Drive thereon, the system booted up from there.
>
> Does all this make sense?
>
> Anyone?
>
> Thanks
>
> Gecko
Some computers have BIOSs which support booting from USB. It has been
like that for a few years and is now very common. You can get an idea
about how common it is in that there are complete operating systems and
application packages developed which fit onto a USB thumb drive to allow
safe portable computing while traveling and to allow recovery of damaged
systems. You can even do a shrunken bootable version of XP using Bart PT
and put it on a USB key.
On Sun, 24 Feb 2008 12:27:43 GMT, gecko <alpha@olympus.net>
wrote:
>I didn't think you could. I know I never could when I had an external
>HD connected to my USB. Anyway, my friend now has an older HP machine
>he picked up, with which he is having a problem getting it to boot. He
>says the BIOS states the 'boot order' to be USB Device followed by
>Hard Drive (c:\). Strangely, so he says, when he put a bootable CD
>disk in the CD Drive thereon, the system booted up from there.
>
>Does all this make sense?
Some systems aren't meant to boot from USB, some are meant
to but the support is buggy and mostly unusable, some are
able to boot from some USB devices but not others, and some
have better emulation and can boot from most things
bootable. Yes it makes sense, if you assume any particular
system and USB device may or may not work and that you'll
just have to try it and see. FWIW, modern systems are much
more likely to be able to do it than older ones.
On 24 Feb, 12:27, gecko <al...@olympus.net> wrote:
> I didn't think you could. *I know I never could when I had an external
> HD connected to my USB. *Anyway, my friend now has an older HP machine
> he picked up, with which he is having a problem getting it to boot. He
> says the BIOS states the 'boot order' to be USB Device followed by
> Hard Drive (c:\). *
> Strangely, so he says, when he put a bootable CD
> disk
DISC
Common usage - (optical-disc, magnetic-disk)
> in the CD Drive thereon, the system booted up from there.
>
do you mean in the USB CDROM Drive?
Yes, it makes sense for a machine to boot from such a thing. Even a
machine that is a few years old.
It would be interesting to know if Any machine that can boot off this
USB thing can boot that USB thing. Or if they use the same method.
Different things to try are..
USB Floppy drive
USB CD drive
USB Hard Disk Drive, USB Key
Some BIOSs, may say CDROM and not USB CDROM, but it actually supports
USB CDROM.
Other BIOSs , may say CDROM and USB CDROM, but the USB CDROM may not
be visible initially. They can have many more booting options such as
USB devices, if you hold DOWN to scroll through the list. I recall one
BIOS that had a scroll bar that suggests there are no more(had no
scrolling thing in the middle), but it is a gimmick scroll bar. There
were more - including USB Key! (and the motherboard supported it)
On Sun, 24 Feb 2008 15:53:20 -0500, kony <spam@spam.com> wrote:
>Some systems aren't meant to boot from USB, some are meant
>to but the support is buggy and mostly unusable, some are
>able to boot from some USB devices but not others, and some
>have better emulation and can boot from most things
>bootable. Yes it makes sense, if you assume any particular
>system and USB device may or may not work and that you'll
>just have to try it and see. FWIW, modern systems are much
>more likely to be able to do it than older ones.
On 25 Feb, 12:20, gecko <al...@olympus.net> wrote:
> On Sun, 24 Feb 2008 15:47:33 -0800 (PST), "jameshanle...@yahoo.co.uk"
>
> <jameshanle...@yahoo.co.uk> wrote:
>
> >DISC
>
> >Common usage - (optical-disc, *magnetic-disk)
>
> I stand corrected.
>
>
>
> >> in the CD Drive thereon, the system booted up from there.
>
> >do you mean in the USB CDROM Drive?
>
> Oh no - in his internal CDROM drive.
ok..
So.
assuming he had a bootable active hard drive partition - so without
the cd in there the computer would have loaded up from the hard
drive.. probably gone into win xp.
Then, it sounds to me like quirky behaviour, either on his part or on
his BIOSs.
> > I didn't think you could. I know I never could when I had an external
> > HD connected to my USB. Anyway, my friend now has an older HP machine
> > he picked up, with which he is having a problem getting it to boot. He
> > says the BIOS states the 'boot order' to be USB Device followed by
> > Hard Drive (c:\).
> >
> > Strangely, so he says, when he put a bootable CD
> > disk
>
> DISC
Why does he have to use upper case? What's wrong with lower case? Oh and
disk and disc are synonyms
> Common usage - (optical-disc, magnetic-disk)
>
> > in the CD Drive thereon, the system booted up from there.
> >
>
> do you mean in the USB CDROM Drive?
No he meant his CD Drive - its the name we use for a drive that can read
Compact Discs.
From reading many web pages out there, I got the notion that a lot of
BIOS'es out there can boot from a "USB mass storage device" but have to
treat them as "removable media" devices. AFAIK, this implies that they
must NOT be partitioned (i.e. no partition table and signatures in the
first few sectors).
My conjecture is that this causes failures for a lot of people, because
for large USB hard disks, Windows (the NT family) requires that you
partition them before you can format them.
I have seen how Linux can circumvent this problem because you can format
a raw hard disk as a whole, in the same way you can format an individual
partition. Windows OS's don't allow that (because we users are too dumb
to know what we're doing).
Anybody can confirm or refute my rant?
gecko wrote:
> I didn't think you could. I know I never could when I had an external
> HD connected to my USB. Anyway, my friend now has an older HP machine
> he picked up, with which he is having a problem getting it to boot. He
> says the BIOS states the 'boot order' to be USB Device followed by
> Hard Drive (c:\). Strangely, so he says, when he put a bootable CD
> disk in the CD Drive thereon, the system booted up from there.
>
> Does all this make sense?
>
> Anyone?
>
> Thanks
>
> Gecko
super_copy wrote:
> From reading many web pages out there, I got the notion that a lot of
> BIOS'es out there can boot from a "USB mass storage device" but have to
> treat them as "removable media" devices. AFAIK, this implies that they
> must NOT be partitioned (i.e. no partition table and signatures in the
> first few sectors).
>
> My conjecture is that this causes failures for a lot of people, because
> for large USB hard disks, Windows (the NT family) requires that you
> partition them before you can format them.
>
> I have seen how Linux can circumvent this problem because you can format
> a raw hard disk as a whole, in the same way you can format an individual
> partition. Windows OS's don't allow that (because we users are too dumb
> to know what we're doing).
>
> Anybody can confirm or refute my rant?
>
well.... I allowed usb support in bios, and to my big surprise,
my usb mouse and usbdrive (3 partitions), turned up as mouse/drives
in a DOS 6.22 boot floppy, making my GHOST 2003 work like a charm.
(Motherboard MSI 865PE Neo2-P)
Boot from USB??? 
Linear Mode
