Customizing NetBSD boot banners.
I recently discovered that it’s surprisingly easy to customize the NetBSD boot loader banner, simply by adding some directives in the boot.cfg configuration file...
https://www.cambus.net/customizing-netbsd-boot-banners/
#system #boot
I recently discovered that it’s surprisingly easy to customize the NetBSD boot loader banner, simply by adding some directives in the boot.cfg configuration file...
https://www.cambus.net/customizing-netbsd-boot-banners/
#system #boot
Compiling the NetBSD kernel as a benchmark.
For a while, I've been compiling my own NetBSD kernel. Just for a few options, mainly CARP, at first for my Raspberry Pis, and at the moment for paravirtualized Xen domUs. Compiling a custom NetBSD kernel is a very easy task, it's just a matter of 3 main steps...
https://blog.anotherhomepage.org/post/2022/05/25/Compiling-the-NetBSD-kernel-as-a-benchmark/
#kernel #system
For a while, I've been compiling my own NetBSD kernel. Just for a few options, mainly CARP, at first for my Raspberry Pis, and at the moment for paravirtualized Xen domUs. Compiling a custom NetBSD kernel is a very easy task, it's just a matter of 3 main steps...
https://blog.anotherhomepage.org/post/2022/05/25/Compiling-the-NetBSD-kernel-as-a-benchmark/
#kernel #system
NetBSD 9.3 released.
The NetBSD Project is pleased to announce NetBSD 9.3, the third release from the NetBSD 9 stable branch.
https://blog.netbsd.org/tnf/entry/netbsd_9_3_released
#release #system
The NetBSD Project is pleased to announce NetBSD 9.3, the third release from the NetBSD 9 stable branch.
https://blog.netbsd.org/tnf/entry/netbsd_9_3_released
#release #system
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Forwarded from OpenBSD
Installing OpenBSD on Scaleway Elastic Metal.
The instructions below will roughly stay the same should you want to install NetBSD or FreeBSD instead of OpenBSD...
https://www.senzilla.io/blog/2022/08/10/installing-openbsd-scaleway-elastic-metal/
#install #system
The instructions below will roughly stay the same should you want to install NetBSD or FreeBSD instead of OpenBSD...
https://www.senzilla.io/blog/2022/08/10/installing-openbsd-scaleway-elastic-metal/
#install #system
Is the NetBSD operating system losing its competitive edge to Linux and FreeBSD?
I’m not entirely sure there was ever a “competitive edge” that NetBSD had over FreeBSD… and the differences between any of the BSDs and Linux are vast — some of them are important, others not so much...
https://www.quora.com/Is-the-NetBSD-operating-system-losing-its-competitive-edge-to-Linux-and-FreeBSD/answer/Stan-Hanks
#system #justread
I’m not entirely sure there was ever a “competitive edge” that NetBSD had over FreeBSD… and the differences between any of the BSDs and Linux are vast — some of them are important, others not so much...
https://www.quora.com/Is-the-NetBSD-operating-system-losing-its-competitive-edge-to-Linux-and-FreeBSD/answer/Stan-Hanks
#system #justread
Crash Override: NetBSD 5.0-9.3 Coredump Kernel Refcount LPE.
NetBSD 5.0 (released 2009) introduced a change to the in-kernel coredump handler that accidentally introduced a reference count bug on the crashing process' credential. Triggering the vulnerability leads to a use-after-free that can be trivially (though slowly) exploited to achieve local privilege escalation, gaining root from an unprivileged starting point...
https://accessvector.net/2022/netbsd-coredump-lpe
#kernel #system
NetBSD 5.0 (released 2009) introduced a change to the in-kernel coredump handler that accidentally introduced a reference count bug on the crashing process' credential. Triggering the vulnerability leads to a use-after-free that can be trivially (though slowly) exploited to achieve local privilege escalation, gaining root from an unprivileged starting point...
https://accessvector.net/2022/netbsd-coredump-lpe
#kernel #system
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Hunting kernel lock and interrupt latency.
Too much of the kernel still runs with the kernel lock, which is bad for performance -- and especially for interactive system responsiveness, since most of wscons including keyboard and mouse input still use the kernel lock. On single-CPU systems, the same problem arises with interrupt latency on its own...
https://mail-index.netbsd.org/tech-kern/2022/10/30/msg028499.html
#kernel #troubleshooting #system
Too much of the kernel still runs with the kernel lock, which is bad for performance -- and especially for interactive system responsiveness, since most of wscons including keyboard and mouse input still use the kernel lock. On single-CPU systems, the same problem arises with interrupt latency on its own...
https://mail-index.netbsd.org/tech-kern/2022/10/30/msg028499.html
#kernel #troubleshooting #system
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NetBSD 10.0 BETA available.
After nearly 3 whole years of development (work started on NetBSD 10 in late 2019), BETA snapshots have finally been published for interested users to test. More changes will be backported from the development branch over the next few months before we tag a final release, so the BETA images will keep getting updated...
https://blog.netbsd.org/tnf/entry/netbsd_10_0_beta_available
#system #beta #release
After nearly 3 whole years of development (work started on NetBSD 10 in late 2019), BETA snapshots have finally been published for interested users to test. More changes will be backported from the development branch over the next few months before we tag a final release, so the BETA images will keep getting updated...
https://blog.netbsd.org/tnf/entry/netbsd_10_0_beta_available
#system #beta #release
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NetBSD at Reproducible Builds Summit Venice 2022.
The sixth Reproducible Builds Summit took place exactly two months ago in Venice, Italy. These three days of workshops were filled with a succession of interactive sessions, where everyone attending had the opportunity to present or learn about anything related to Build Reproducibility...
https://blog.netbsd.org/tnf/entry/reproducible_builds_summit_venice_2022
#system #reproducible
The sixth Reproducible Builds Summit took place exactly two months ago in Venice, Italy. These three days of workshops were filled with a succession of interactive sessions, where everyone attending had the opportunity to present or learn about anything related to Build Reproducibility...
https://blog.netbsd.org/tnf/entry/reproducible_builds_summit_venice_2022
#system #reproducible
👍1
NetBSD ASCII flag for the bootloader.
Attempting to draw the NetBSD flag in ASCII and use it when booting in both NetBSD/i386 and NetBSD/amd64 in BIOS mode was thus too tempting, so here we go...
https://www.cambus.net/netbsd-ascii-flag-for-the-bootloader/
#boot #system
Attempting to draw the NetBSD flag in ASCII and use it when booting in both NetBSD/i386 and NetBSD/amd64 in BIOS mode was thus too tempting, so here we go...
https://www.cambus.net/netbsd-ascii-flag-for-the-bootloader/
#boot #system
👍3
NetBSD 10 Beta installs and testing from i386 to ARM.
I've run NetBSD for quite some time, going back to the days of Dr. Dobbs magazine and the release of the BSD4-based 386BSD (which I installed from floppy disks...). The chance of beta testing the newest release came at the end of December 2022. I had installed NetBSD-current on Raspberry Pi platforms, and also had different levels of NetBSD 9 on systems.
This story is on my attempts to upgrade or install fresh operating systems "in house". Rather than strict chronological order, the sections below are by CPU architecture, starting with the older i386 then going to Arm processors. I have not upgraded an AMD-based system (yet), and will add notes at the end when I can...
https://jspath55.blogspot.com/2023/02/netbsd-10-beta-installs-and-testing.html
#system #install
I've run NetBSD for quite some time, going back to the days of Dr. Dobbs magazine and the release of the BSD4-based 386BSD (which I installed from floppy disks...). The chance of beta testing the newest release came at the end of December 2022. I had installed NetBSD-current on Raspberry Pi platforms, and also had different levels of NetBSD 9 on systems.
This story is on my attempts to upgrade or install fresh operating systems "in house". Rather than strict chronological order, the sections below are by CPU architecture, starting with the older i386 then going to Arm processors. I have not upgraded an AMD-based system (yet), and will add notes at the end when I can...
https://jspath55.blogspot.com/2023/02/netbsd-10-beta-installs-and-testing.html
#system #install
👍2
NetBSD Toaster Powered by the TS-7200 ARM9 SBC (article from 2016).
It has long been regarded that the UNIX-like OS NetBSD is portable to every type of machine except perhaps your kitchen toaster. Technologic Systems, however, has conquered this last frontier. Using the rugged, embedded TS-7200 single board computer housed inside the empty space of a standard two slice toaster, Technologic Systems has designed a functional NetBSD controlled toaster...
- https://www.embeddedts.com/blog/netbsd-toaster-powered-by-the-ts-7200-arm9-sbc/
- https://www.embeddedts.com/blog/netbsdevbarm-support-on-the-ts-7200/
#hardware #system #install
It has long been regarded that the UNIX-like OS NetBSD is portable to every type of machine except perhaps your kitchen toaster. Technologic Systems, however, has conquered this last frontier. Using the rugged, embedded TS-7200 single board computer housed inside the empty space of a standard two slice toaster, Technologic Systems has designed a functional NetBSD controlled toaster...
- https://www.embeddedts.com/blog/netbsd-toaster-powered-by-the-ts-7200-arm9-sbc/
- https://www.embeddedts.com/blog/netbsdevbarm-support-on-the-ts-7200/
#hardware #system #install
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Building a NetBSD ramdisk kernel.
When I used OpenBSD, I was a big fan of bsd.rd: a kernel that includes a root file system with an installer and a few tools. When I invariably did something bad to my root file system, I could use that to repair things. bsd.rd is also helpful for OS updates. And there is only a single file involved.
On NetBSD however, there is usually no netbsd.rd kernel installed, or even available by default. The facility is there, it’s just not standard. To be fair, there are a number of architectures that use kernels with a ramdisk for installation. Recently, I have been toying with NetBSD on an Orange Pi 5. This is a 64-bit ARM board, using the evbarm-aarch64 architecture. I am booting from an SD card (details in a followup post) but once booted, the kernel does not see the card any more, only the NVMe SSD. So my thoughts went back to bsd.rd and I decided that I want one...
https://bentsukun.ch/posts/ramdisk-kernel/
#system #ramdisk
When I used OpenBSD, I was a big fan of bsd.rd: a kernel that includes a root file system with an installer and a few tools. When I invariably did something bad to my root file system, I could use that to repair things. bsd.rd is also helpful for OS updates. And there is only a single file involved.
On NetBSD however, there is usually no netbsd.rd kernel installed, or even available by default. The facility is there, it’s just not standard. To be fair, there are a number of architectures that use kernels with a ramdisk for installation. Recently, I have been toying with NetBSD on an Orange Pi 5. This is a 64-bit ARM board, using the evbarm-aarch64 architecture. I am booting from an SD card (details in a followup post) but once booted, the kernel does not see the card any more, only the NVMe SSD. So my thoughts went back to bsd.rd and I decided that I want one...
https://bentsukun.ch/posts/ramdisk-kernel/
#system #ramdisk
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