Raspbian error: “The following signatures couldn’t be verified because the public key is not available”

I couldn’t do a ‘sudo apt-get update’ on my Pi 3 running Raspbian as I got this error:

Fetched 74.9 kB in 31s (2,381 B/s)                            Reading package lists... Done
W: GPG error: http://security.debian.org jessie/updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9D6D8F6BC857C906 NO_PUBKEY AA8E81B4331F7F50

To import the missing keys:

sudo apt-key adv –keyserver keyserver.ubuntu.com –recv-key AA8E81B4331F7F50

sudo apt-key adv –keyserver keyserver.ubuntu.com –recv-key 9D6D8F6BC857C906

Tips from here.

Raspbian Jessie apt-get error: “Is the package apt-transport-https installed?”

Trying to do a ‘sudo apt-get update’ on my Raspberry Pi running Jessie I got this error:

$ sudo apt-get update
E: The method driver /usr/lib/apt/methods/https could not be found.
N: Is the package apt-transport-https installed?

Seeing posts online with similar errors about the sources configured in /etc/apt/sources.list, I looked in my file and I had this line:

deb http://mirrordirector.raspbian.org/raspbian/ jessie main contrib non-free rpi

I haven’t used or tried to update this Pi for a while so I can’t remember if this line was how it was originally configured or if I changed it.

Replacing this first line with what I think is more typical:

deb http://raspbian.raspberrypi.org jessie main contrib non-free rpi

and then doing a ‘sudo apt-get update’, it updates sources and now I can upgrade and install other packages again as expected.

NVRAM replaced in Sun Ultra 60, but no longer booting

I picked up a “new” (new old stock most likely since I don’t think these chips are still manufactured, and haven’t been for 10+ years) NVRAM timekeeper chip since the one in the Sun Ultra 60 I picked up cheap on ebay was dead. Luckily it seems to still have charge and is keeping the host id and mac address values between power off/on, so that’s great.

The odd thing now is I’m running into this issue that I didn’t see before:

Hardware watchdog enabled svc.configd: smf(5) database integrity check of:    
failed. The database might be damaged or a media error might have prevented it from being verified. Additional information useful to your service provider is in:
The system will not be able to boot until you have restored a working database. svc.startd(1M) will provide a sulogin(1M) prompt for recovery purposes. The command:
can be run to restore a backup version of your repository. See
http://sun.com/msg/SMF-8000-MY for more information.
Requesting System Maintenance Mode
svc.configd exited with status 102 (database initialization failure)

If I could get to a single user logon prompt then I could follow these instructions to repair, but the above error is just looping continuously, so I’m unable to do the repair.

When I first installed Solaris 10 from CDs, I got through the first couple of disks and then the cd drive would just eject any disk inserted, and won’t stay closed. I managed to complete the install by copying across ISO disk images and completing the install from those.

Since I can’t get a physical install cd to stay in the drive, I’m not sure I can boot recovery, so I’m kinda stuck. I think it’s time to pick up a replacement cdrom drive (might as well get a dvd drive) otherwise I’m kinda stuck in the water with this machine at this point.