If you need to reinstall OS or change its version — it is really easy! The most important thing is you can do it yourself, without contacting technical support!
First method To reinstall OS on the server you need to log into control panel https://vps.unihost.com/, choose needed VPS, press «Manage» button and go to tab «General»:
Then press Reinstall Reinstall button.
In opened setup wizard choose needed OS. You may choose clean OS, as well as already tuned OS with add-ons for concrete tasks, which will be installed automatically with OS and do not require additional settings:
– ISPmanager Lite and Pro
– Ruby on Rails
Press “Reinstall” button and confirm OS reinstall.
After that the process of installation will start. It may take up to 15-20 minutes, depending on the power of your server. You will also get a new password for entering the server (ROOT password). Save it or copy because it is not listed anywhere else.
Second method: reinstalling OS via CD-ROM. In this case, only clean OS is being installed, other settings are set up by you. After that choose needed OS from the drop-down list and press «Mount»
Then go to “Settings” tab and choose «(1) CDROM (2) Hard Disk» in “Boot order” section.
Press “Set” button and reload your VPS with “Reboot” in the General section.
After rebooting server enter the VNC terminal (press “VNC” button in control panel) and follow setup wizard instructions.
2. If you can not access the server via SSH using default password, you can always change root password with VPS control panel (vps.unohost.com) in “Root password” section.