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Compaq LTE Lite 4/33c parts, drivers and BIOS

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Reply 20 of 22, by Thermalwrong

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flecom wrote on 2026-06-05, 20:18:
exs1s wrote on 2022-01-10, 23:32:
wulp wrote on 2021-10-11, 19:50:

It's working!
Now searching to install a cf-card (hdd is dead..)

Do not even try and use a CF card IDE adapter. It will fry your HDD controller chip. Trust me on this. As I said in a post above, only ever use a HDD listed in the BIOS with a LTE Lite.

CF to IDE cards do work, however, with the Elite and 5000 series which both have a different HDD controller.

any more info on this? I don't understand why a CF card would fry the IDE controller but not a regular hard drive, anyone tried a 44pin SD to IDE adapter if anything? that would have active electronics vs passive CF adapters

could use a 256MB or 512MB card if it has a bios LBA limit (I ended up doing that on my PS/1)

Yeah I think I can explain. The LTE Lite uses a 50-pin connector which covers the 44-pin IDE pins and two master/slave jumpers. If that's installed misaligned it could put VCC into the wrong pin on the CF card, potentially damaging that and potentially damage the IDE controller (less likely).
The IDE controller and HDD connector are also often damaged by the leaked standby battery, perhaps that weakened some traces and voltage on the wrong pins finished it off.

The only hard drives that will work on the LTE Lite are ones in the HDD table, so there's no chance to use a CF card unless perhaps the BIOS's hard drive table is edited (which I've done successfully with an old award bios) or you can get it to use an option ROM somehow.
Personally I was able to find one drive that matched up with the BIOS HDD table, with my last LTE Lite that had a dead drive.

Reply 21 of 22, by wulp

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I was on vacation and only got back today...

My post is about 4 years old, and the only thing I remember about these LTEs were the problems with the FDDs.
After a repair with a new belt (Ebay), the FDD worked another 2 times or so.
When it broke again, I got rid of the LTEs I still had.
So I can't help anymore either...
Succes!

Reply 22 of 22, by flecom

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Thermalwrong wrote on 2026-06-06, 13:48:
Yeah I think I can explain. The LTE Lite uses a 50-pin connector which covers the 44-pin IDE pins and two master/slave jumpers. […]
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flecom wrote on 2026-06-05, 20:18:
exs1s wrote on 2022-01-10, 23:32:

Do not even try and use a CF card IDE adapter. It will fry your HDD controller chip. Trust me on this. As I said in a post above, only ever use a HDD listed in the BIOS with a LTE Lite.

CF to IDE cards do work, however, with the Elite and 5000 series which both have a different HDD controller.

any more info on this? I don't understand why a CF card would fry the IDE controller but not a regular hard drive, anyone tried a 44pin SD to IDE adapter if anything? that would have active electronics vs passive CF adapters

could use a 256MB or 512MB card if it has a bios LBA limit (I ended up doing that on my PS/1)

Yeah I think I can explain. The LTE Lite uses a 50-pin connector which covers the 44-pin IDE pins and two master/slave jumpers. If that's installed misaligned it could put VCC into the wrong pin on the CF card, potentially damaging that and potentially damage the IDE controller (less likely).
The IDE controller and HDD connector are also often damaged by the leaked standby battery, perhaps that weakened some traces and voltage on the wrong pins finished it off.

The only hard drives that will work on the LTE Lite are ones in the HDD table, so there's no chance to use a CF card unless perhaps the BIOS's hard drive table is edited (which I've done successfully with an old award bios) or you can get it to use an option ROM somehow.
Personally I was able to find one drive that matched up with the BIOS HDD table, with my last LTE Lite that had a dead drive.

ok that makes sense, I have run into that before (50 pin cables), and misalignment of the CF card could definitely do some damage, I will look into dumping the bios and seeing what I can do, I had to do similar mods to my old gridcase "laptops" as well so kind of familiar with that... other possibility would be the new IDE emu devices, could just emulate a supported disk geometry