Really strange problem with any HDD - Dos sees only one size \ VOGONS

Really strange problem with any HDD - Dos sees only one size

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First post, by Niezgodka

Posted on 2018-09-19, 02:26

Niezgodka Offline

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Ok. I have a nice ACR Globalyst 510 - 486DX2, with Award Modular Bios 4.50. It came with 520mb HDD, and works perfectly!
Recently, I decided to upgrade it with IDE CF adapter, with 1 or 2 GB CF card. I noticed, that Bios recogniz the correct size of CF cards, and even displays it in Bios chart in booting, however my dos (7.1) sees only 520 MB of any hddd connected to it. I tried multiple disk, reseting Bios, loading defaults bios values - always the same. Bios sees any hdd, but in dos there is only 520, and a lot of problems with folders (sector missing if you open it). I never experiance such a weird thing. Any ideas how to fix it?
Worst case scenario - leaving 520MB original hdd, but it would be nice to have CF in it 🙁

Reply 1 of 5, by Tiido

Posted on 2018-09-19, 03:24

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This is one of the BIOS HDD size limits. You'll need XTIDE or some DDO to overcome it.

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Reply 2 of 5, by Niezgodka

Posted on 2018-09-19, 04:05

Niezgodka Offline

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I can't have xtide, cause it has only one ISA slot, that I need for sound card!
What is that DD) thing?

EDIT: Found it! I installed EZ DDO and works like it should!
Thank You!

Last edited by Niezgodka on 2018-09-19, 04:26. Edited 1 time in total.

Reply 3 of 5, by AlaricD

Posted on 2018-09-19, 04:23

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Niezgodka wrote:
What is that DD) thing?

Dynamic Drive Overlay, like Western Digital's EZ-BIOS. It allows use of Logical Block Addressing to overcome the 504MiB BIOS limitations of older PCs.

Niezgodka wrote:

It came with 520mb HDD, and works perfectly!

That 520MB hard drive is only 496MiB, which means it doesn't need LBA to see the full capacity.

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Reply 4 of 5, by AlaricD

Posted on 2018-09-19, 04:35

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Niezgodka wrote:
EDIT: Found it! I installed EZ DDO and works like it should!
Thank You!

Enjoy your new larger-capacity, quicker drives!

"The Big Bang. The ultimate hero of low frequency. The divine intergalactical bass drum connecting the tribes of our solar system."
Yello
"Solar Driftwood"

Reply 5 of 5, by tayyare

Posted on 2018-09-19, 10:50

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Niezgodka wrote:
I can't have xtide, cause it has only one ISA slot, that I need for sound card! What is that DD) thing? […]
Show full quote
I can't have xtide, cause it has only one ISA slot, that I need for sound card!
What is that DD) thing?

EDIT: Found it! I installed EZ DDO and works like it should!
Thank You!

You apparently already solved the problem using DDO software, but just to remind you that utilizing XTIDE does not mean you need to spend an ISA slot. You can just burn the XTIDE firmware in an EPROM, insert it in the bootROM socket of a PCI NIC and you are ready to go.

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