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Adding another hard drive

People used to older Unices may expect more complications, and may expect to have to use "mkfs" after hand editing kernel configuration files to add the appropriate block and character devices. You certainly can do all that if you want, but "mkdev hd" is a front end that makes it much easier. If you are curious as to what goes on behind the scenes, look in /usr/lib/mkdev. The "hd" command there is a shell script, and is fairly self-explanatory.



Title Last Comment
Upgrading to Ubuntu 12.04 LTS Server   2012/10/25 TonyLawrence
- My upgrade from 10.04 LTS to 12.04 LTS went faster than I expected, but there were surprises at the end. -

Another one bites the dust  
- Another SCO system transitions to Linux. Porting Filepro to Linux, printing issuues and Samba configuration. -

Don't use internal Modems  
- Why you should never use internal modems on servers -

Newbie guide for the net install of SuSe 8.2  
- How to install SuSe 8.2 over the Internet - a guide for newbies and anyone else who is confused by this. -

Installation  
- Start Here: General Installation advice for Unix and Linux operating systems. -

Linux|Unix Logical Volume Manager (LVM) on Software RAID   2011/01/07 TonyLawrence
- Logical Volume Manager is now included with most Linux distributions. The RedHat 8.0 installer even allows you to create LVM volumes during initial install. LVM offers capabilities previously only found in expensive products like Veritas. If you plan on using LVM, I really recommend doing so on a RAID system, either hardware or software -

AIX Secure Image Installation Procedures  
- NOTE: Screenshots are from an ASCII installation of AIX 5.1 using Windows HyperTerminal. -

Software Mirroring on RedHat 8.0  
- I installed RedHat 8.0 on a spare machine here to see how the software raid works. I have always used hardware raid in the past, but various internet articles and posts convinced me that Linux software raid wasn't a Bad Thing. I do think I still prefer hardware raid, though. BTW, always remember that raid is no substitute for regular and reliable backup! -

3.2v4.2 System Recovery  
- Using a Linux system to recover data from a badly crashed SCO Unix 3.2v4.2 machine. As a common cause for that is simply a missing or damaged inittab, I thought we might be able to fix it by booting from floppies and doing a manual repair. Unfortunately, there were no emergency boot floppies. -

Numeric Unix Error Messages   2010/04/06 TonyLawrence
- It's an unfortunate fact that many programmers are lazy about error messages. Very often, all you get is a cryptic "Error 5", and you may be lucky to get that. -

Linux|Unix ABI- Using other Unix binaries on Linux  
- Linux ABI- pitfalls and considerations of running SCO apps on Linux -

Transferring Data from an Old Hard Drive  
- The machine I had installed in 1993 had developed a problem with the hard disk controller. I checked with the manufacturer and they had never even heard of EISA SCSI controllers. -

Installing an Equinox SST-64 under Linux  
- After 15-20+ hours work I got my Equinox sst-64 pci card working. I'm sending info on what I did in case it is useful to others. -

Adding a Hard Drive to Linux  
- Quick reminder of how to manually configure a second IDE hard drive on most Linux systems. -

Installing SCO OSR5.0.6  
- Installing and configuring SCO 3.2v5.0.6: First order of business was to install the 29160 controller. Ooops, no 64 bit PCI slots in this machine. Hmm, what was I thinking? Oh, yeah, I was planning to use another, newer machine that does have those slots. But since then, that machine has become the machine my wife uses. See what happens when you delay these things? -

Hard Disks  
- The most common hard drives today are IDE or SCSI. IDE drives are generally less expensive (though not by much) and generally not as fast (again, not by much). IDE systems are limited to two drives per controller, which means that you probably cannot have more than 4 IDE drives in one system. With SCSI, you can have 15 (or 7 with older controllers). -

Red Hat 7  
- Red hat now takes two CD's to install. No more leaving it alone, I guess -

SCO/Linux Transition Guide  
- This is not a porting guide; this is a transition guide: a guide to the major differences between SCO and Linux. -

General Trouble Shooting   2010/12/24 anonymous
- Sometimes computer problems can feel like Dickens' dying woman- you know something is wrong, but you have no idea where or how to start looking for it. -

 
 
LOD Communications, Inc.
 
 
Unixware 7 Non Stop Clusters  
- That isn't true, not even if we ignore the system overhead of splitting the job off to another processor. -

Booting SCO_OSR5- Filesystems  
- Just about anything you are going to do with a computer involves files. Unix in general treats just about everything as a file. -

Booting SCO_OSR5  
- PC Bootstrap: I'm ignoring the POST (Power On Self Test) routines and anything else (security checks, etc) that might be built into your machine. Obviously all of that happens prior to boot, but isn't important for this article. -

Booting SCO_OSR5- CPU  
- I think it's unfortunate that most programmers and administrators don't have much knowledge of hardware or indeed much interest in it. -

Redhat Linux 6.1  
- Red Hat 6.1 is now available. I was out buying a book or something the other day and saw it on the shelf, so I picked it up and finally got to it this weekend. As I already had a 6.0 installation in place, I decided to try the "upgrade" option. I really have no need to do this; the Red Hat machine is just a "test and play" box, so I could have just wiped it out and started fresh, but I wanted to see how well the upgrade would work. Unfortunately, at first it didn't work well at all. -

Booting SCO_OSR5- Swap and Dump  
- Normally, the swap and dump device are identical. You could change that by editing the file /etc/conf/cf.d/sassign and relinking a new kernel. -

Getting Linux Up and Running in my Office  
- There's plenty of controversy in the SCO community concerning Linux. Some see it as the death knell for SCO, others as a positive force, others as something in between. No matter what you think, you probably agree that learning something about it is important. -

Understanding RAID  
- Today anyone with high disk performance needs or concerns about data reliability should consider some sort of RAID configuration. -

Adding Memory  
- Adding Memory to SCO Unix, tuning NBUF and NHBUF to use that RAM -

DPT Raid Controller  
- DPT ( http://www.dpt.com) builds a complete line of SCSI raid controllers -

Setting up a Small Office Network  
- Installing a Small Office Network, design and physical aspects of installing a small TCP/IP network. -

Performing OS Upgrades  
- I think most of us tend to delay upgrades. There is the natural fear of untested software, the expense and the time and trouble required. -

Using Secondary drives   2012/12/17 TonyLawrence
- This article is fairly specific to SCO Unix, but the general concepts of moving data and creating a symbolic link do apply to any Unix and Linux. -

Adding another hard drive   2010/06/18 TonyLawrence
- You add a hard drive on SCO Unix, and configure the file systems on it, by running "mkdev hd". There's plenty that can go wrong! -

Setting up High Speed Modems  
- This is about configuring modems on SCO Unix and is only left here for historical purposes. -