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I have a Dell OptiPlex 990 with good specs like an SSD, i5 2500, and 8GB RAM.

The system is extremely slow when booting from a Ventoy USB flash drive to install Windows or Linux, hanging for a few minutes before the installation starts; afterwards, the process goes a lot faster:

  • I have the default UEFI firmware settings, UEFI
  • The only thing I changed is the controller mode to AHCI from RAID. I really don’t know what the system is doing - why is doing that?

Any ideas what is happening?

JW0914
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Andrei Chiper
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2 Answers2

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As a final answer to this question. Here I go.

Due to the low machine specifications, as @ChanganAuto said in comments and some research on the internet, the computer is not usable for the expectations I had in my mind. Still, the computer can be used as a station to work on, doing light tasks, editing documents, watching videos.

I have installed OpenMediaVault operating system and done RAID 1 for mirroring. The performance is terrible. It took me almost one day to do all the configurations and wait for the machine to complete tasks. As for the speed, I tried to save a copy of a 5 GB Windows ISO file on it and the write speed went somewhere around ~48 Mbps. Not fast at all.

I just wanted to see if it can get something done.

In conclusion, don't jump to buy old stuff in the hope that it will work just fine. Buy it only after a lot of research and only if you have real expectations from it.

Thank you!

Andrei Chiper
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Satisfação, que está mensagem encontre todos bem...

falo do Brasil,

O pegar dois equipamentos como estes, Dell optplex 990 me deparei com as mesmas condições mencionadas, muito lento na inicialização mesmo apos upgrade para SSD. descobri que em ambas situações a bateria da Bios estavam zeradas o que leva o padrão de fabrica instalação para RAID, descobri que mesmo alterando para AHCI e não removendo o cabo de energia mesmo assim, sem trocar a bateria Bios volta para RAID fazendo que tanto a instalação quanto execução do sistema fique lenta. Portanto troquem primeiro a bateria da Bios e alterem o Setup para AHCI mode também na Sequencia Boot desmarque a opção de USB RAID cliquem em aplicar. Espero que ajude. No meu caso Resolveu. Com um abraço,

Att. Márcio Silva. Clean Computer

Clean Computer y Mobiles
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