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November 17th, 2022 10:00
Optiplex 9020 Sff Win 11 clean install no boot device found
Optiplex 9020 clean Win 11 install (bypassed check on cpu/secure boot/tpm)
bios shows windows boot manager as boot device
everytime power on it gives error no boot device found, press F1 to continue …press F2…press F5
press F1 will launch Win 11 without further issue.
same Win 11 installation dvd used to install os in other dell desktop/laptop and did not have this weird error. How can I get rid of it.
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redxps630
11 Legend
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80.8K Points
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November 17th, 2022 11:00
Solution found: dell Optiplex bios sata operation default is raid. Change to ahci. Got a warning message that this may affect booting, Apply change exit bios
win 11 crashes repeatedly and could not repair.
try a second clean Win 11 install w sata in AHCI (there is only one sata hdd connected). No more error at boot up.
sfnyc
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October 27th, 2024 23:47
@redxps630 Thank you so much. I remember I ran into an issue like this with win 10 years ago and on the same machine had to do the same change... though it's strange that it Win 10 was working but then after I installed 11 (via upgrade) it wouldn't boot and the bios reset to RAID rather than staying on AHCI. But the solution here was gold. All is well and Win 11 booted as it should so we're back in business. Thanks again for the precious solution! :)