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Category Archives: Computer Related

RHEL/Centos 7.0 and CCISS driver


I bought several HP DL360 G4p from Server Monkey to use as test machines for OpenStack. Unfortunately, the HP SmartArray 6i SCSI RAID controller that is installed in these machines is not supported by the RHEL 7.0. The cciss driver required for the controller is still part of the main kernel, it’s just not shipped […]

Creating floppy images


Recently, I’ve needed to create DOS floppy images to use with VMWare. Floppy images end up being more convenient than trying to set up LANMAN or other networking in DOS. I used to use dd(1), but it’s come to my attention that the mkfs.vfat(8) now has a -C option, that does some of that hard […]

OpenVMS Firmware Variables


After waiting hours for OpenVMS to install on my DEC3000, I was presented with the following error message when I attempted to boot the fresh install: %APB-F-BADSYSROOT, System root [SYSA.] does not exist, check bootflags Very disheartening, however it’s a fairly easy fix.  My DEC 3000 was previously used for OSF/1 (i.e. UNIX), so a […]

LA600 and VMS


I recently won a state surplus auction that included a large amount of old DEC hardware.  Most of it was junk, e.g. old VT420s with screen burn, but there was a diamond in there:  a DEC LA600 MultiPrinter. This thing is a monster:  a wide carriage dot matrix printer designed for heavy use.  Amazingly enough, […]

RTL8168B in Ubuntu Server LTS 8.04


So, This has probably been hashed out several times on the Internet, but I figure one more time wont hurt. I decided to install Ubuntu Server 8.04 LTS on one of my Linux machines. After installation, the ethernet card refused to work. It was detected by the kernel, there was a light on the switch, […]

Everyone can hear you fart, with TECHNOLOGY!


I work with a former DEC (Digital Equipment Corporation) employee who told me this anecdote. DEC was one of the earlier adopters of video conferencing technology, using it to host meeting between its campuses. The cameras in the meeting rooms automatically zoom towards who ever was speaking (presumably by detecting where the loudest noise in […]

Zenith Data Systems


I was recently given two Zenith Data System PC compatible computers: a 286 and a 386. I’ve just recently revived one of them, at least temporarily. I believe it has a flakey power supply. It’s non-standard to boot, which means I can’t just swap it out. I’m hoping to get these old PCs in working […]

OS/2 Warp 4


I just recently acquired a copy of OS/2 Warp 4, among other things, from a friend. I’ve been working on getting it installed on an old AMD K6 system that I have laying about. After replacing a bad PSU, I found that the hard drive (just barely over 4 gigabytes) was too large for the […]

Enabling more than 3 gigabytes of RAM in Linux


Doubtless, most everyone knows this, but since I’m just now crossing the 1 gigabyte line in my latest computer, I was left blissfully unaware. In Linux, the normal, 32-bit kernel can see a maximum of 3 GB of RAM.  To get it to see more one must enable Physical Address Extension (PAE) in the Linux […]