# UmbrelOS doesn't boot & fan gets to the max **URL:** \ **Category:** Support and Troubleshooting\ **Created:** [August 17, 2024, 5:10pm UTC](https://community.umbrel.com/t/umbrelos-doesnt-boot-fan-gets-to-the-max/18867 "2024-08-17T17:10:43Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![juanjo](https://avatars.discourse-cdn.com/v4/letter/j/94ad74/32.png) [@juanjo](https://community.umbrel.com/u/juanjo)\ **Post date:** [August 17, 2024, 5:10pm UTC](https://community.umbrel.com/t/umbrelos-doesnt-boot-fan-gets-to-the-max/18867/1 "2024-08-17T17:10:43Z")
I have a Raspberry Ri 5 4GB RAM and a 2TB HDD for a bitcoin node, setup it correctly and worked well, but when it was about ~49% of blockchain sync I could no longer access umbrel.local from any device of the network. I don’t have a miniHDMI wire so I can’t connect a screen and see what’s going on, so I just turned it off and turned it back on a few hours later, and it did work again, but then when it was about ~58% I couldn’t connect from the web again, and I’ve rebooted it several times, the difference now is that when I turn it on, the fan it gets to the maximum speed without stopping (i’ve already left it 1h like this, and it’s still not working). I thought I’d reinstall the operating system on the microSD, but in the initial configuration it will remove all the HDD content and I don’t want to lose 2 weeks of download. If someone could help me, I’d appreciate it. ---
**Author:** ![Green2J](https://avatars.discourse-cdn.com/v4/letter/g/b487fb/32.png) [@Green2J](https://community.umbrel.com/u/Green2J)\ **Post date:** [August 18, 2024, 4:13pm UTC](https://community.umbrel.com/t/umbrelos-doesnt-boot-fan-gets-to-the-max/18867/2 "2024-08-18T16:13:59Z")
I’m no expert, but I don’t believe reflashing the SD card will affect the HDD info in any way…you may want to wait on someone to confirm or deny this before trying it out ---
**Author:** ![octolance](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.umbrel.com/octolance/32/7829_2.png) [@octolance](https://community.umbrel.com/u/octolance)\ **Post date:** [August 22, 2024, 10:24pm UTC](https://community.umbrel.com/t/umbrelos-doesnt-boot-fan-gets-to-the-max/18867/4 "2024-08-22T22:24:24Z")
Yup, if a Pi user is using an external storage drive, reflashing the system SD card is totally okay and won’t result in any data loss. ---
**Author:** ![octolance](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.umbrel.com/octolance/32/7829_2.png) [@octolance](https://community.umbrel.com/u/octolance)\ **Post date:** [August 22, 2024, 10:27pm UTC](https://community.umbrel.com/t/umbrelos-doesnt-boot-fan-gets-to-the-max/18867/5 "2024-08-22T22:27:29Z")
Are you able to SSH into the Pi while it is turned on? Can you try running the following command from a terminal on your computer? ```auto sudo ssh -t umbrel@umbrel.local ``` If `umbrel.local` doesn’t work, try using the IP address of the Pi. You can get the IP by using a utliity like Fing or accessing your router’s admin page and looking it up there. - On Windows, the terminal is known as Windows PowerShell or Command Prompt. - On macOS or Linux, search for Terminal. If you manage to successfully connect, can you try running the following command to view the logs: ```auto sudo journalctl -b -u umbrel.service ``` ---
**Author:** ![juanjo](https://avatars.discourse-cdn.com/v4/letter/j/94ad74/32.png) [@juanjo](https://community.umbrel.com/u/juanjo)\ **Post date:** [August 23, 2024, 3:25pm UTC](https://community.umbrel.com/t/umbrelos-doesnt-boot-fan-gets-to-the-max/18867/6 "2024-08-23T15:25:30Z")
Nop, I excuted `ping umbrel.local` and show error. Also I executed `user@computer:~$ sudo ssh -t umbrel@umbrel.local [sudo] contraseña para amnesia: ssh: Could not resolve hostname umbrel.local: Name or service not known user@computer:~$ sudo ssh -t umbrel@192.168.1.40 ssh: connect to host 192.168.1.40 port 22: No route to host ` And the Pi is power on. I going to reflash the SD card and say if it work. I checked in the umbrel page and yes, says that if the SSD have a configuration of Umbrel, are not going to delete all, in other case the Pi delete all ---
**Author:** ![juanjo](https://avatars.discourse-cdn.com/v4/letter/j/94ad74/32.png) [@juanjo](https://community.umbrel.com/u/juanjo)\ **Post date:** [August 23, 2024, 5:39pm UTC](https://community.umbrel.com/t/umbrelos-doesnt-boot-fan-gets-to-the-max/18867/8 "2024-08-23T17:39:07Z")
Okay, reflashing the SD where the solution but idk if its gonna happen again and why happens that