[BALU] BIOS and Logical Block Addressing

Jeff Scarborough jeff.scarborough at gmail.com
Mon Jun 18 14:40:21 CDT 2007


That is what I had read but the system is only seeing about 8 megs for
some reason.



On 6/18/07, Jim Vines <jgoodguy at charter.net> wrote:
> This MB is limited to 128GB, if I am reading the manual LBA wiki correctly.
>
> "LBA addresses in ATA can be 28-bit or 48-bit (introduced in ATA-6)
> wide, which results in a disk size limit of 128 GiB
> <http://en.wikipedia.org/wiki/Gibibyte> or 128 PiB
> <http://en.wikipedia.org/wiki/Pebibyte>, respectively, assuming the
> common 512 bytes per sector."
> http://en.wikipedia.org/wiki/Logical_block_addressing
>
> The online ASUS manual says that 28-bit LBA is used for on that board.
>
> Jim
>
>
> Jeff Scarborough wrote:
> > I'm at work at the moment so going from memory but the MB is Asus
> > P4S333.  As I stated I did look at the BIOS info on the ASUS site but
> > I did not see any of the BIOS updates that indicated it would help
> > with large drives.
> >
> > The drive that was purchased is a Western Digital 320 gig
> >
> > Jeff
> >
> > On 6/18/07, Jim Vines <jgoodguy at charter.net> wrote:
> >> What MB, by the way and what HD.
> >>
> >> Jim
> >>
> >> Jeff Scarborough wrote:
> >> > Hello All,
> >> >
> >> > I have ran across a problem and hope someone could help.  My in-laws
> >> > computer recently stopped booting.  So we tried to replace the hard
> >> > drive on the system.  When I attempted to install XP (sorry but they
> >> > would not go with Linux) we ran into a problem.  After the
> >> > instillation, the computer would not boot.  Then I tried to install
> >> > Linux and when I tried to boot the system the GRUB system gave an
> >> > "error 18".
> >> >
> >> > Now I may be wrong but as I understand what is happening is that the
> >> > MB on the computer is a few years old and so uses the logical block
> >> > addressing scheme.  My theory is that the software is loading but when
> >> > the system boots up it only "sees" a portion of the hard drive and
> >> > thus can not boot up.  At this point I assume that part of the boot
> >> > information is in a portion of the hard drive "invisible" to the BIOS.
> >> >
> >> > Some places on the net say that with LBA the drive could not be larger
> >> > than 8 gigs but on wikipedia it said the drive would have to be
> >> > limited to 128 gigs.
> >> >
> >> > When booting up the computer part of the POST screen gives the size of
> >> > primary as 8455 megs.
> >> >
> >> > I have looked at the Asus website and they do have updated BIOS but I
> >> > have not seen any information that this would actually correct the
> >> > problem and I would prefer not to update the BIOS unless I had to see
> >> > as I could mess up a whole lot more.
> >> >
> >> > And at the moment I not sure of the best course of action.  If anyone
> >> > has any idea about how I can get XP onto the machine that would be
> >> > very helpful.
> >> >
> >> > Jeff



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