> Rodney W. Grimes <freebsd-rwg_at_gndrsh.dnsmgr.net> wrote: > > > Are you refering to something like: > > > > > > vfs.root.mountfrom="cd9660:/dev/md0.uzip" > > > > > > we boot that way all the time. > > > > What provides the cd9660 driver to FreeBSD? When you load the .iso > > over a network card, aka PXE/HTTP, the code that does that usually > > creates a ram disk and a "fake cd drive" that stops working as soon > > We don't use PXE much except in a bringup lab, and then I think we use > NFS for rootfs. Probably much like what I do once my kernel is loaded. > Normally if iso is comming from network it is to do an install > eg loader is doing 'install tftp://host/install.tar' > > The "fake cd drive" is in the kernel, loader just copies the iso into > memory like any other module, and by the time that's done you just > reboot into the newly installed system, which again uses > > vfs.root.mountfrom="cd9660:/dev/md0.uzip" ^^^ Argh, the cd9660 confused me, I think your doing a "root on mfs/md"? > but in that case the rootfs is an iso image on local disk. > > The rootfs iso is minimal - enough to fsck and mount real media > and initialize Verified Exec. > It improves our chances of being able to recover from severe disk > corruption after cleaning lady pulls the cord, to vaccuum ;-) > > --sjg > _______________________________________________ > freebsd-current_at_freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe_at_freebsd.org" > -- Rod Grimes rgrimes_at_freebsd.orgReceived on Tue Jun 16 2020 - 14:50:47 UTC
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