IDE & EIDE compatibility

Posted on 1997-05-12
Last Modified: 2008-02-20
Will an EIDE hard disk work (perhaps slower than its possibilities) if attached to an IDE controller?
And, vice-versa, an IDE hard disk attached to an EIDE controller?
Question by:gbexpert
  • 4

Accepted Solution

allways earned 20 total points
ID: 1009007
The answer to this question is simple but easy:

Believe me I've tried. As far as i know the difference is not the hard disks it is the controllers use of them that differ. If u would like som more clarification get back to me.

Good luck.....Allways

Author Comment

ID: 1009008
So in both cases are there no problems?

Expert Comment

ID: 1009009
There might be  prob if u use a EIDE drive larger than 528MB (where 1MB=1'000'000 bytes) on an IDE interface. this is caused by the IDE ususlly don't support larger disks.

  Check out:      %

Expert Comment

ID: 1009010
There might be  prob if u use a EIDE drive larger than 528MB (where 1MB=1'000'000 bytes) on an IDE interface. this is caused by the IDE ususlly don't support larger disks.

  Check out:      (and their links to HDD-EIDE faq)      (explains the IDE interface goood)

I can tell u that the later of the configs u proposed (IDE drive on EIDE-interface) is going to work like a charm. The other should work....;->

......15mins later....

Now i have read throught this and called a friend and the answer to your question is really YES. the important thing is that your BIOS support EIDE if your drive is larger than 528MB (this only is a fact if u use DOs. in LINUX or OS2 that is not an issue in the same way they don't use the BIOS to acces the drive.)
But YES u will get a slight decreas in performance (due to that the IDE dont support the same high transfer rate as the EIDE)

Good luck....Allways

Expert Comment

ID: 1009011
Sorry for the double post but i couldn't get thorugh to the server had to restart the SUBMIT. This thing gets really sloooow sometimes.

Have a nice day...and

Good luck....Allways

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