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[[!tag open_issue_gnumach open_issue_mig]]

[[!inline pages="title(Is there a 64-bit version?)" feeds="no" raw="yes"]]

**What is left for initial support (32-on-64) is**

  * Fixing bugs :)

**For pure 64bit support, we need to**

  * bootstrap a distrib
  * port gdb
  * Fix bugs :)
    * Notably it seems to be requiring at least 2G memory to boot.

**Installing a 64bit chroot**

You can use the pre-built image from https://people.debian.org/~sthibault/hurd-i386/initrd-amd64.img.gz and boot that.

Make sure to have `debootstrap >= 1.0.128+nmu2+hurd.1`

    debootstrap --foreign --verbose --arch hurd-amd64 --include=debian-keyring,wget,curl,inetutils-ping,openssh-server,openssh-client,nano,less --keyring=/usr/share/keyrings/debian-keyring.gpg sid chroot-hurd-amd64 https://people.debian.org/~sthibault/tmp/hurd-amd64
    mkdir chroot-hurd-amd64/etc/apt/trusted.gpg.d
    ln -s /usr/share/keyrings/debian-keyring.gpg chroot-hurd-amd64/etc/apt/trusted.gpg.d/

Then boot it, it will drop you into a shell. You need to make / writable:

    fsysopts / --writable

and then run the second stage of the deboostrap (and clear debs):

    /debootstrap/debootstrap --second-stage
    apt clean

set a root password:

    passwd

Avoid core dumpings for now (not supported and hangs):

    rm -f /servers/crash
    ln -s crash-kill /servers/crash

Disable the Hurd console, buggy for now:

    export TERM=mach
    nano /etc/default/hurd
    # set ENABLE to 'false'

And reboot:

    reboot-hurd

After reboot, you'll probably want to setup network:

    vi /etc/network/interfaces
    # put there this:
    # auto /dev/eth0
    # iface /dev/eth0 inet static
    #     address 10.0.2.15/16
    #     gateway 10.0.2.2

**Creating a 64bit disk image**

You can use the pre-built image from https://people.debian.org/~sthibault/hurd-i386/disk-amd64.img.gz and boot that.

To make a bootable system we really better make the disk image partitioned, and mount the partition:

    dd < /dev/zero > disk.img bs=1M count=1 seek=1000
    fdisk disk.img
    # create a new primary partition spanning the whole disk: n p and just accept the defaults, and finish with w
    settrans -ca disk /hurd/storeio -T typed file:disk.img
    settrans -ca disk1 /hurd/storeio -T typed part:1:file:disk.img
    mke2fs disk1
    settrans -ca chroot-hurd-amd64 /hurd/ext2fs disk1

(here we assume that fdisk puts the partition at sector 2048, that's indeed the
current default behavior)

Then run the same debootstrap command as above.

You can then make the disk bootable:

    mkdir chroot-hurd-amd64/boot/grub
    tee chroot-hurd-amd64/boot/grub/grub.cfg << 'EOF'
    menuentry "Debian GNU/Hurd amd64" {
            insmod ext2
            set root=(hd0,1)
            multiboot       /boot/gnumach-1.8-486.gz root=part:1:device:wd0
            module /hurd/pci-arbiter.static pci-arbiter \
                            --host-priv-port='${host-port}' --device-master-port='${device-port}' \
                            --next-task='${disk-task}' \
                            '$(pci-task=task-create)' '$(task-resume)'
            module /hurd/rumpdisk.static rumpdisk \
                            --next-task='${fs-task}' \
                            '$(disk-task=task-create)'
            module /hurd/ext2fs.static ext2fs --readonly \
                            --multiboot-command-line='${kernel-command-line}' \
                            --exec-server-task='${exec-task}' -T typed '${root}' \
                            '$(fs-task=task-create)'
            module /lib/ld-x86-64.so.1 exec /hurd/exec '$(exec-task=task-create)'
    }
    EOF
    grub-install --modules="part_msdos ext2" --boot-directory chroot-hurd-amd64/boot disk
    settrans -ga chroot-hurd-amd64
    settrans -ga disk
    settrans -ga disk1

Note: you need to set the uuid in the grub config according to the uuid produced by the `mke2fs` command.

Then boot it, and proceed like for the chroot case.

**Installing a 64bit system**

In principle crosshurd should be working, one however needs to add this source:

    deb http://people.debian.org/~sthibault/tmp/hurd-amd64 unstable

into /etc/crosshurd/sources.list/gnu