Hi,
i have to change my diskdrive and i believe the board will only
support ATA100 drives!?
What is one above 100GB? Is a 250GB - obove the 120GB limit - full
usable?
A second question please: on the board spec. ist shown '2 x UltraDMA
100/66/33' can i only use 100 or 133 to? Will 133 drives support 100?
Thanks a lot!
Cheers
Peter
Für direkte email rot13 cebBETN-Yrvzra@jro.qr
oder entferne ".without-this" aus der Email-To. Danke!
Peter Michel wrote:
> Hi,
> i have to change my diskdrive and i believe the board will only
> support ATA100 drives!?
> What is one above 100GB? Is a 250GB - obove the 120GB limit - full
> usable?
> A second question please: on the board spec. ist shown '2 x UltraDMA
> 100/66/33' can i only use 100 or 133 to? Will 133 drives support 100?
> Thanks a lot!
> Cheers
> Peter
> Für direkte email rot13 cebBETN-Yrvzra@jro.qr
> oder entferne ".without-this" aus der Email-To. Danke!
That means a drive larger than 137GB can be supported. You need
a recent version of BIOS, to make it possible. Also, the right
"Service Pack" from Microsoft, for your OS. More details are
here. And if the motherboard does not properly support the
larger drive (sometimes the Asus table above is wrong), you can
use a PCI IDE card to fix it. (Like a Promise Ultra133 card.)
As for the speed limitation, a 133 drive will run at 100
just fine. Remember to use a ribbon cable with 80 wires,
to enable the faster transfer rates. The Intel Southbridge
is actually limited to 100MB/sec in one direction, and
88.9MB sec in the other direction, so those will be the
burst transfer rate limits.
If your motherboard supports 48-bit LBA (and apparently it does) there
really is no upper limit on size. Otherwise, the limit would be 120GB.
Caveat: Your operating system must ALSO support 48-bit LBA. If you
have XP SP2 or later, you are ok. For any other OS', you need to do
some research.
You can use any IDE drive; if you get a 133MHz drive, it will slow down
and operate at 100MHz (or even down to 33MHz if you don't have an
80-conductor cable).
Peter Michel wrote:
> Hi,
> i have to change my diskdrive and i believe the board will only
> support ATA100 drives!?
> What is one above 100GB? Is a 250GB - obove the 120GB limit - full
> usable?
> A second question please: on the board spec. ist shown '2 x UltraDMA
> 100/66/33' can i only use 100 or 133 to? Will 133 drives support 100?
> Thanks a lot!
> Cheers
> Peter
> Für direkte email rot13 cebBETN-Yrvzra@jro.qr
> oder entferne ".without-this" aus der Email-To. Danke!
** Posted from http://www.teranews.com **
Hi Paul!
Thanks a lot!
I think all my questions are fully answered 8-)
Cheers
Peter
>Peter Michel wrote:
>> Hi,
>> i have to change my diskdrive and i believe the board will only
>> support ATA100 drives!?
>> What is one above 100GB? Is a 250GB - obove the 120GB limit - full
>> usable?
>> A second question please: on the board spec. ist shown '2 x UltraDMA
>> 100/66/33' can i only use 100 or 133 to? Will 133 drives support 100?
>
>http://support.asus.com.tw/technical...e=en-us&NO=501
>
>P4B533 Yes BIOS 1006
>
>That means a drive larger than 137GB can be supported. You need
>a recent version of BIOS, to make it possible. Also, the right
>"Service Pack" from Microsoft, for your OS. More details are
>here. And if the motherboard does not properly support the
>larger drive (sometimes the Asus table above is wrong), you can
>use a PCI IDE card to fix it. (Like a Promise Ultra133 card.)
>
>http://www.seagate.com/support/kb/disc/tp/137gb.pdf
>
> Windows XP SP1 or later
> Windows 2000 SP3 or later
>
>As for the speed limitation, a 133 drive will run at 100
>just fine. Remember to use a ribbon cable with 80 wires,
>to enable the faster transfer rates. The Intel Southbridge
>is actually limited to 100MB/sec in one direction, and
>88.9MB sec in the other direction, so those will be the
>burst transfer rate limits.
>
>The 80 conductor cable is mentioned here.
>
>http://www.pcguide.com/ref/hdd/if/ide/conf.htm
Für direkte email rot13 cebBETN-Yrvzra@jro.qr
oder entferne ".without-this" aus der Email-To. Danke!
On Jul 4, 2:58*pm, Paul <nos...@needed.com> wrote:
> Peter Michel wrote:
> > Hi,
> > i have to change my diskdrive and i believe the board will only
> > support ATA100 drives!?
> > What is one above 100GB? Is a 250GB - obove the 120GB limit - full
> > usable?
> > A second question please: on the board spec. ist shown '2 x UltraDMA
> > 100/66/33' can i only use 100 or 133 to? Will 133 drives support 100?
> > Thanks a lot!
> > Cheers
> > Peter
> > Für direkte email rot13 cebBETN-Yrv...@jro.qr
> > oder entferne ".without-this" aus der Email-To. Danke!
>
> http://support.asus.com.tw/technical...documents_cont...
>
> P4B533 * * Yes * * BIOS 1006
>
> That means a drive larger than 137GB can be supported. You need
> a recent version of BIOS, to make it possible. Also, the right
> "Service Pack" from Microsoft, for your OS. More details are
> here. And if the motherboard does not properly support the
> larger drive (sometimes the Asus table above is wrong), you can
> use a PCI IDE card to fix it. (Like a Promise Ultra133 card.)
Would upgrades be required if the 250 GB drive were partitioned into
segments less than the 137 GB limit?
Herbert
>
> http://www.seagate.com/support/kb/disc/tp/137gb.pdf
>
> * * *Windows XP SP1 or later
> * * *Windows 2000 SP3 or later
>
> As for the speed limitation, a 133 drive will run at 100
> just fine. Remember to use a ribbon cable with 80 wires,
> to enable the faster transfer rates. The Intel Southbridge
> is actually limited to 100MB/sec in one direction, and
> 88.9MB sec in the other direction, so those will be the
> burst transfer rate limits.
>
> The 80 conductor cable is mentioned here.
>
> http://www.pcguide.com/ref/hdd/if/ide/conf.htm
>
> * * Paul
a1eah71@verizon.net wrote:
> On Jul 4, 2:58 pm, Paul <nos...@needed.com> wrote:
>> Peter Michel wrote:
>>> Hi,
>>> i have to change my diskdrive and i believe the board will only
>>> support ATA100 drives!?
>>> What is one above 100GB? Is a 250GB - obove the 120GB limit - full
>>> usable?
>>> A second question please: on the board spec. ist shown '2 x UltraDMA
>>> 100/66/33' can i only use 100 or 133 to? Will 133 drives support 100?
>>> Thanks a lot!
>>> Cheers
>>> Peter
>>> Für direkte email rot13 cebBETN-Yrv...@jro.qr
>>> oder entferne ".without-this" aus der Email-To. Danke!
>> http://support.asus.com.tw/technical...documents_cont...
>>
>> P4B533 Yes BIOS 1006
>>
>> That means a drive larger than 137GB can be supported. You need
>> a recent version of BIOS, to make it possible. Also, the right
>> "Service Pack" from Microsoft, for your OS. More details are
>> here. And if the motherboard does not properly support the
>> larger drive (sometimes the Asus table above is wrong), you can
>> use a PCI IDE card to fix it. (Like a Promise Ultra133 card.)
>
> Would upgrades be required if the 250 GB drive were partitioned into
> segments less than the 137 GB limit?
>
The original proposal for 28 bit versus 48 bit LBA, is here.
If 48 bit support is not present, then a 28 bit sector address can be
used. In hexidecimal, this would go from 0x0000000 to 0xFFFFFFF.
As long as all accesses to the disk, stay below the 137GB value, then
nothing funny happens to the address. But if the address exceeds
the 0xFFFFFFF value, the value actually used "rolls over" to 0x0000000,
and an unsuspecting sector near the origin of the disk, gets accessed
instead. This is a recipe for a disaster.
You could partition the disk into a lower 137GB portion, and
leave the upper 113GB section unused. As long as no special purpose
software attempts to write anywhere in the upper 113GB section, it
would work OK.
It would also be easy to buy a 120GB drive. That is below 137GB and
is safe with either 28 bit or 48 bit addressing schemes.
P4B533 - maximal usable Harddrive 
Linear Mode
