Ubuntu Server 25.10 (Questing Quokka) Daily Build

Select an image

Ubuntu-Server is distributed on three types of images described below.

Server install image

The server install image allows you to install Ubuntu-Server permanently on a computer for use as a server. It will not install a graphical user interface.

RISC-V server install image

For RISC-V computers. Requires copying your own first stage bootloader (like u-boot) and relevant DTBs onto the image before usage on real hardware (like the SiFive HiFive Unmatched).

Netboot tarball

The netboot tarball contains files needed to boot the Ubuntu-Server installer over the network.

64-bit PC (AMD64) netboot tarball

Choose this if you have a computer based on the AMD64 or EM64T architecture (e.g., Athlon64, Opteron, EM64T Xeon, Core 2). Choose this if you are at all unsure.

64-bit ARM (ARMv8/AArch64) netboot tarball

For 64-bit ARMv8 processors and above.

PowerPC64 Little-Endian netboot tarball

For POWER9 and POWER10 Little-Endian systems.

RISC-V netboot tarball

For RISC-V computers. Requires copying your own first stage bootloader (like u-boot) and relevant DTBs onto the image before usage on real hardware (like the SiFive HiFive Unmatched).

IBM System z netboot tarball

For IBM System z series mainframes, such as IBM LinuxONE.

For ARM hardware for which we do not ship preinstalled images, see ARM/Server/Install for detailed installation information.

A full list of available files can be found below.

If you need help burning these images to disk, see the Image Burning Guide.

[ICO]NameLast modifiedSizeDescription
[PARENTDIR]Parent Directory  -  
[ ]SHA256SUMS2025-05-09 10:14 99  
[ ]SHA256SUMS.gpg2025-05-09 10:14 833  
[DIR]netboot/2025-05-09 10:13 -  
[ ]questing-live-server-riscv64.iso2025-05-09 10:13 1.4GServer install image for RISC-V computers (standard download)
[ ]questing-live-server-riscv64.iso.zsync2025-05-09 10:14 2.8MServer install image for RISC-V computers (zsync metafile)
[ ]questing-live-server-riscv64.list2025-05-09 10:13 6.5KServer install image for RISC-V computers (file listing)
[TXT]questing-live-server-riscv64.manifest2025-05-09 10:08 19KServer install image for RISC-V computers (contents of live filesystem)
[ ]questing-netboot-amd64.tar.gz2025-05-06 19:45 91MNetboot tarball for 64-bit PC (AMD64) computers (filesystem archive)
[ ]questing-netboot-arm64+largemem.tar.gz2025-05-06 19:47 98M 
[ ]questing-netboot-arm64.tar.gz2025-05-06 19:46 98MNetboot tarball for 64-bit ARM (ARMv8/AArch64) computers (filesystem archive)
[ ]questing-netboot-ppc64el.tar.gz2025-05-06 19:48 82MNetboot tarball for PowerPC64 Little-Endian computers (filesystem archive)
[ ]questing-netboot-riscv64.tar.gz2025-05-09 10:14 78MNetboot tarball for RISC-V computers (filesystem archive)
[ ]questing-netboot-s390x.tar.gz2025-05-06 19:48 40MNetboot tarball for IBM System z computers (filesystem archive)