Date: Tue, 19 Nov 2002 20:04:08 +0100
From: Julian Vassaux <[EMAIL PROTECTED]>
Subject: Re: [LIB] HELP!!!! My 50ct can't boot up suddenly after
Hi !
I have a Lib50 overclocked at 100Mhz and I have no problem with a 20G IBM
hdd. That's a Travelstar 40GN
Do people experience problems with the 40GN series? I was thinking only the
20GN had the problem.
Julian
Raymond wrote:
>
> Date: Tue, 19 Nov 2002 08:40:49 +0800
> From: Raymond <[EMAIL PROTECTED]>
> Subject: Re: [LIB] HELP!!!! My 50ct can't boot up suddenly after
> overclock!!!!!
>
> At 03:27 PM 18/11/2002 -0800, you wrote:
> >Date: Tue, 19 Nov 2002 07:26:22 +0800 (CST)
> >From: =?big5?q?tradelink=20tradelink?= <[EMAIL PROTECTED]>
> >Subject: HELP!!!! My 50ct can't boot up suddenly after overclock!!!!!
> >
> >I am now using IBM 6.4G harddisk Travelstar 6GN (model
> >: DBCA-206480), it worked find until I overclocked my
> >50ct....
>
> Uh oh ...
>
> >I cut the pin 15 of W48C54A chip last night and hope
> >my 50ct will go up to 100MHz.
> >
> >My bad dream come.....
> >
> >My 50ct can't boot up again no matter I :-
> >1) boot up with floppy and "fdisk/mbr" or
> >2) boot up with floppy, delete my FAT partitions (I
> >used to boot from FAT partition), recreate them and
> >format/s the boot partition again
>
> Yup ... and if you look in the archives, you'll realize that, of all hard
> drives, IBM seem to be the only one that has this problem unfortunately ...
> when you cut that pin to clock to 100MHz, you're raising the bus speed by
> 25%. Problem is you're also raising the speed of the IDE controller by that
> amount and it looks like the consensus is that the IBM drives are the only
> ones that don't like that ... probably it's fussy about rise and fall times
> or signal shape or something.
>
> So there are 2 options ... downclock (solder that pin back) or get yourself
> a nice new 40GB Fujitsu/Seagate/Toshiba/<anything other than IBM>! I was
> using a Fujitsu 20GB hard drive in my overclocked L50 and it seemed quite
> happy ... it's also quite happy in my L100 which is clocked from 166 to 233
> (but I *think* that's a multiplier clock and not a bus frequency clock).
>
> Remember that you need a drive overlay to see beyond 1024 cylinders (about
> 8 gig). See my reply to David Nedved's post or search in the archives for
> ezdrv909.zip .
>
> Hope this helps!
>
> - Raymond
>
> ---
>
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