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Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
I need to add a second HDD to my PC which has ATA100 IDE onboard (UDMA4) I've seen plenty ATA133 HDDs on eBay (UDMA5) Will an ATA133 disk work with my ATA100 onboard controller?
Registered Member #127
Joined: Fri Feb 10 2006, 03:36PM
Location: Cincinnati, OH - USA
Posts: 44
Just make sure your BIOS will support the size of the new drive. Might not be an issue, but there was a 137GB addressing limitation. So if you have an older mobo and your new drive is over 137GB you might run into it. Usually there is an updated bios to fix it though. :)
Registered Member #56
Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
It isn't the interface that has a problem, but with the chipset on the mobo itself. If it is a really old mobo (like under 500mhz) it probably wont support >30gb, or a moderatly old one (.5-1ghz) will only handle the 137gb.
The only way to check it to look in the manual, or give it a try. Many drives will also have a legacy mode where the drive pretends to be a smaller drive (that is compatable with the mobo)
Registered Member #65
Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155
In windows you may need a bios overlay driver if you system BIOS will not support 120Gig+ drives. Check the OEM website to download a config installer wizard.
If you run linux, fdisk (v2005) format the 8G area of the disc as a boot partition in msdos. Then once loaded access the partitioning tools in the shell to create more data volumes (or a live CD like knoppix).
Some *nix systems do use direct hardware calls when loaded (no bios calls for HD.)
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Hmm, all this talk of BIOS overlay drivers and stuff is just opening a whole new can of worms. I wouldn't go there.
If the computer is new enough to have UDMA4, then the BIOS will hopefully support some fairly big disks. The 137GB thing can be a problem, though. When I'm fixing up old computers, I just never bother to try fitting any drive bigger than 80GB. That is about the biggest size that DOS/Win98's disk tools can handle.
I've had trouble with a few older motherboards that refused to recognise even 80GB drives. In every case, I was able to find a firmware update on the manufacturer's site and reflash the BIOS. That fixed it in all cases but one (an old Compaq Deskpro with an Intel 815 chipset) where fdisk still thought it was dealing with a 20GB drive. However, the format took longer than usual, and once it was done, I somehow had a fully functioning 80GB drive, go figure! I eventually got that machine to dual boot 98SE and Ubuntu.
PS: Don't forget to use an 80 conductor cable, and make sure you put the blue end in the motherboard, or it falls back to a slower speed.
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ATA133 on ATA100 ok?
I eventually got that machine to dual boot 98SE and Ubuntu.