When kernel can not locate root filesystem it asks user to input
filesystem specification. But no USB keyboards are initialized at that
moment. And user is not capable to fix problem unless he have an AT
This is a part of dmesg of normal boot process. start_init functions
calls vfs_mountroot right before searching for the "init" executable.
In case of unavailability of root system vfs_mountroot_ask is called
from vfs_mountroot. And usb keyboard stays uninitialized.
Trying to mount root from ufs:/dev/ad6p3.journal
start_init: trying /sbin/init
ugen2.2: <Microsoft> at usbus2
ukbd0: <Microsoft Comfort Curve Keyboard 2000, class 0/0, rev 2.00/1.73, addr 2> on usbus2
kbd2 at ukbd0
kbd2: ukbd0, generic (0), config:0x0, flags:0x3d0000
uhid0: <Microsoft Comfort Curve Keyboard 2000, class 0/0, rev 2.00/1.73, addr 2> on usbus2
ugen2.3: <Microsoft> at usbus2
How-To-Repeat: Comment out or spoil the line of /etc/fstab specifying a root
filesystem. Reboot system. Try to use usb keyboard to fix problem.
I'm not sure, but I think that this is a duplicate of usb/133989.
Perhaps somebody more knowledgeable could verify that and close
(In reply to Gavin Atkinson from comment #1)
> Responsible Changed
> From-To: freebsd-bugs->freebsd-usb
> I'm not sure, but I think that this is a duplicate of usb/133989.
> Perhaps somebody more knowledgeable could verify that and close
This is definitely a dupe.
For bugs that match the following
- Status Is In progress
- Untouched since 2018-01-01.
- Affects Base System OR Documentation
Reset to open status.
I did a quick pass but if you are getting this email it might be worthwhile to double check to see if this bug ought to be closed.