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Ubuntu 26.04 server install note

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Last updated at Posted at 2026-07-28

1.Hadware:

  • CPU: 10th i9
  • RAM: DDR4 128G
  • VGA: NVidia RTX 4000 16G
  • SSD: 1. 512G SATA3 * 1 - system
    2. 1T SATA3 * 2 - raid1 for data store

2.BIOS:

  • CSM disabled to use UEFI
  • Secure Boot disabled for USB install
  • CPU CFG Lock disabled for Intel VT-d
  • SATA set to AHCI for linux soft raid
  • Wake-on-Lan enabled for booting from local lan

3.Format

  • Must to choice the 512G ssd and set it boot-able
    /boot/efi fat32 1G (Auto create)
    /boot ext4 1G
    /var ext4 8G ( /var/cache/apt/、/var/lib/snapd/snaps/ )
    /tmp ext4 4G
    swap swap 16G (It's fine to omit this since ram has more than 64G)
    / ext4 320g
    /home ext4 ~
  • To set softraid md0 with to select 1T ssd * 2
  • To create volume group on md0: vg-0
    /raid ext4 ~

4.Network

  • Set IPv6 disable
  • Set IPv4 manual (To use private ip here)
  • Netmask: <localnet>/24 (*Although 0~254 all correctly, but need set the last bit to 0 here)
  • IP: <host ip>
  • Gateway: <gateway ip> (IP-shsre/firewall/router)
  • DNS: 1.1.1.1
  • No proxy URL

5.Setting user and hostname

  • user name、account name、password
  • hostname: hostname without domain

6.Install OpenSSh server

7.Rebooting

  • Rebooting
  • Waitting hint to remove USB first then
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