https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 15 Jun 2026 22:36:27 +0000 Fri, 01 May 2026 15:55:57 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=113501 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201345&title=b450-pro4-io-errors-on-external-hdds#201345 Author: Xaltar
Subject: 113501
Posted: 01 May 2026 at 3:55pm

Awesome, thanks a ton for tracking it down and sharing the cause for anyone else
who may be struggling with it ]]> Fri, 01 May 2026 15:55:57 +0000 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201345&title=b450-pro4-io-errors-on-external-hdds#201345 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201344&title=b450-pro4-io-errors-on-external-hdds#201344 Author: garagedrive
Subject: 113501
Posted: 01 May 2026 at 3:38pm

I found out the IO error case. Pawn IO, which is developped under Gifthub community, and is a core program of various PC monitoring tools is the one.
Monitoring tools include Libre Hardware Monitor, FanCtrl, FanControl, and so on. Pawn IO became popular after "WinRing0 trojan issue". Most application switched core from "WinRing0" to "Pawn".
Since every ver. works fine but the latest, it took long time for me to catch it. Thanks again! ]]> Fri, 01 May 2026 15:38:54 +0000 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201344&title=b450-pro4-io-errors-on-external-hdds#201344 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201343&title=b450-pro4-io-errors-on-external-hdds#201343 Author: garagedrive
Subject: 113501
Posted: 01 May 2026 at 9:00am

I temporarily install Windows to another drive, 25H2 with latest windows updates along with AMD latest drivers. I could successfully access to USB HDDs, which means there's no hardware related damage, but some software/configulation issues brought me this I/O error. I will check various customizations I've done so far to figure out this issue. I appreciate if you have any suggestions which may affect I/O issues. As for power, "USB selective suspend" and "PCIe link" options are NOT applied. Thx.]]> Fri, 01 May 2026 09:00:44 +0000 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201343&title=b450-pro4-io-errors-on-external-hdds#201343 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201332&title=b450-pro4-io-errors-on-external-hdds#201332 Author: Xaltar
Subject: 113501
Posted: 30 Apr 2026 at 4:21am

With external drives I find cables over about 30cm tend to be too long. It may
be worth trying with much shorter ones. A 1m long cable is far longer than I would
use on an external drive. 1m is roughly 3ft.]]> Thu, 30 Apr 2026 04:21:13 +0000 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201332&title=b450-pro4-io-errors-on-external-hdds#201332 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201313&title=b450-pro4-io-errors-on-external-hdds#201313 Author: garagedrive
Subject: 113501
Posted: 29 Apr 2026 at 7:06am

HDDs are healthy. I took them out from the enclosures, connected them to internal SATA ports, and found them "safe".
I also purchased brand-new enclosures/cables/ACs, replaced them with existing ones, and found out I/O errors again.
I use rear USB ports. Cables are less than 3fts.
should try Linux distro, or clean install windows.    ]]> Wed, 29 Apr 2026 07:06:54 +0000 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201313&title=b450-pro4-io-errors-on-external-hdds#201313 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201307&title=b450-pro4-io-errors-on-external-hdds#201307 Author: Xaltar
Subject: 113501
Posted: 28 Apr 2026 at 11:14pm

And these drives worked without error prior to the windows update? More often than
not, IO errors on external drives come down to either bad cables or bad drives.
If you have ruled out the drives then the next thing to rule out is the cables.

External HDDs are incredibly sensitive to cable length and voltage drop. We had
another forum member complaining about similar issues a few months back. In the
end it turned out that they had replaced their case and were trying to use the
front panel USB ports to connect their drives. It had worked fine in the old case
because the front panel headers used short cables to connect to the motherboard
but the new case used much longer cables and it was causing too much voltage droop.
We were back and forth troubleshooting for quite some time before figuring it out.

Try the drives connected to rear IO USB ports using shorter cables and see if that
clears it up.

If not then try a live linux distro on a USB drive and see if you get errors under
linux to rule out the windows update itself as being the issue. You will likely
need to use a linux drive testing tool.]]> Tue, 28 Apr 2026 23:14:00 +0000 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201307&title=b450-pro4-io-errors-on-external-hdds#201307 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201306&title=b450-pro4-io-errors-on-external-hdds#201306 Author: garagedrive
Subject: 113501
Posted: 28 Apr 2026 at 8:15pm

already re-installed latest AMD chiset driver, 8.02.18.557. Unfortunately problem remains.]]> Tue, 28 Apr 2026 20:15:41 +0000 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201306&title=b450-pro4-io-errors-on-external-hdds#201306 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201303&title=b450-pro4-io-errors-on-external-hdds#201303 Author: Xaltar
Subject: 113501
Posted: 28 Apr 2026 at 7:49pm

I would recommend updating your chipset/all in one drivers. I find that most often
windows updates break things then AMD releases a new driver package to fix them
again. ]]> Tue, 28 Apr 2026 19:49:02 +0000 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201303&title=b450-pro4-io-errors-on-external-hdds#201303 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201301&title=b450-pro4-io-errors-on-external-hdds#201301 Author: garagedrive
Subject: 113501
Posted: 28 Apr 2026 at 7:32pm

after applying KB5083769, USB3.0 external USB HDDs don't work properly. They often show I/O errors.
HDDs are safe. I've confirmed them connecting them to internal SATA ports.
I've also changed HDD cases, and the problem remains.

mobo B450 pro4
BIOS 10.60 (latest)
Windows 11 home 25H2 latest windows updates applied
]]> Tue, 28 Apr 2026 19:32:16 +0000 https://forum.asrock.com/forum_posts.asp?TID=113501&PID=201301&title=b450-pro4-io-errors-on-external-hdds#201301