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Old 10-22-2018, 12:55 PM   #1
Registered: Nov 2004
Distribution: Devuan
Posts: 754
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Post FreeBSD 11.2 ZFS dual boot with Linux in UEFI-GPT mode from a single hard drive

I am already testing FreeBSD 11.2 with KDE 5 Plasma (5.12.5) in a Devuan Linux host using VirtualBox. But, it is using UFS2 filesystem.

My desktop has a Intel 330 SSD and 1 TB WD Hard Drive. I have created a 70GB free space in the hard drive, while SSD is to remain untouched.

  • The EFI partition created by Windows 10 is in the SSD. (/dev/sda)
  • Devuan Linux is on the hard drive (/dev/sdb). Hard drive also has other ext4 partitions.
I am excited to try ZFS filesystem for root and it's features despite using only a single hard drive. The desktop has 6GB DDR-3 and I'm hoping to use vfs.zfs.arc_max to restrict RAM usage to 2GB.

I think bsdinstall do not have such manual partitioning options for ZFS. So, I will have to use shell to create ZFS file system, pool etc. After I manually create ZFS root, can the bsdinstall has options to detect my partitioning and continue with the base installation along with BSD bootloader? I have read and it is recommending a complete manual install with kernel, ports all downloaded and extracted to the partition and perhaps, chroot to complete the installation. However, I feel manual installation and later, creating config files in /etc or /usr/local/etc and such folders is a tedious thing, when bsdinstall can do that.

Another problem is whether, Devuan installed Grub2 os-probber can detect FreeBSD installation and add it to Grub menu? Will I need to use rEFIt boot manager?
Any inputs..

Last edited by deepclutch; 10-22-2018 at 12:57 PM.


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