Science and technology

How I migrated from a Mac Mini to a Raspberry Pi

Some time in the past, I made a decision to maneuver my computing setting from a Mac Mini PowerPC to a Raspberry Pi Model 2. This article describes my causes for doing so and the way I did it. While it’s fairly technical in locations, if you happen to’re contemplating switching from an present system to one thing decidedly lean and imply, there are issues that it’s essential know earlier than making that leap. There are numerous hyperlinks to click on as nicely, which can lead you to the software program and apps that I point out.


Saying goodbye to the Mac

I’ve to confess, I’ve by no means actually been an Apple fanboi, particularly following a brief (and in the end unsatisfactory) fling with a plastic polycarbonate MacE book again in 2006. Although it was superbly designed, and the software program “Just Worked,” I used to be understandably upset when it determined to run out shortly after the guarantee interval expired (design faults, apparently). Ah nicely.

I swore by no means to “invest” in an Apple machine once more—till I found a used Mac Mini PowerPC on eBay that might be had for round $100 in 2012. It was new again in 2005 however had apparently been refurbished. “What have I got to lose, especially at that price?” I requested myself. Nobody answered, so I positioned a last-minute bid, gained it, and invested about the identical sum of cash once more in bumping the reminiscence as much as 1GB and shopping for the OS on DVD. The OS X model was 10.four.7 Tiger, and the structure was Power PC. It was sedate however dependable, and I used to be completely happy. It did not take a number of energy both; some 60 watts at full load, in order that was a bonus. I spent many completely happy hours tinkering with it and looking for software program that was supported on a tool that outdated.

Predictably although, as my computing necessities grew and the Mac bought older, it began to get noticeably slower, and I used to be conscious that even easy duties—akin to asking it to run an online browser and show an HTTPS web page—had been inflicting it issues. When I lastly managed to seek out antivirus software program for it, I turned conscious of simply how noisy the Mini’s cooling fan was because the CPU struggled with the additional load.

A fast examine of the efficiency screens revealed 1000’s of memory-paging faults, and I spotted that my outdated pal was quickly destined for the knackers yard. Of course, that meant looking for a substitute, and that is when the enjoyable began.

A(nother) small laptop

My primary downside was that I did not have a giant price range. I checked out eBay once more and located plenty of Mac Minis on the market, throughout the $500 mark, and plenty of of these had been early basic-spec Intel models that, like my outdated Mac, individuals had merely grown out of. Essentially, I needed one thing just like the outdated Mini, ideally with comparable energy consumption. A brand new one was out of the query, clearly.

Let me state that my laptop necessities are fairly undemanding, and for picture/graphics work, I’ve one other laptop that consumes energy like there is no tomorrow and offers off sufficient warmth to maintain me heat in winter. And then I bought to fascinated with the Raspberry Pi Model 2. Now earlier than you chortle, I have round six of the issues operating numerous servers, and so they just do high-quality. One runs a small internet server, one other runs a mail server, and so forth. Each one prices round $30, and most use an affordable microSDHC card, so if one fails, I can simply swap it out for one more, and I can often purchase an appropriate card at a neighborhood grocery store—attempt doing that when your laptop computer drive fails! I even have a Netgear ReadyNAS 102 with a few 2TB onerous drives to behave as my bulk storage.

Suddenly, my plan seemed as if it could be viable in spite of everything!

Spec’ing it out

The specification was a little bit of a no brainer: The Model 2 Pi comes with 1GB of reminiscence commonplace, the Ethernet runs at 100Mbps most, the clock pace is 900MHz, there are 4 USB ports, and that is yer lot, mate. You can overclock it, however I’ve by no means needed to do this for numerous causes.

I had a Pi in my spares drawer, so no downside there. I ordered a fancy aluminum case made by Flirc that was on supply for $20 and duly slotted within the Pi. The energy provide unit (PSU) needed to be a real two-amp machine, and once more, I had a spare mendacity round. If you are taking your Pi possession significantly, I like to recommend the Anker 40W five-port desktop charger: it has clever energy administration, and I am operating 5 Pis from one unit. Incidentally, if you happen to inadvertently use a PSU that may’t ship the required present, you will hold seeing a sq., multi-colored icon within the top-right nook of your display screen, so be warned.

The microSDHC “disk” was extra of a problem, although. I all the time use SanDisk, and this time I needed one thing quick, particularly as this was to be a “desktop” machine. In the top, I went for a SanDisk 8GB Extreme Pro UHS-1 card that promised as much as 90 to 95 Mbps write/learn efficiency. “8GB? That’s not a lot of space,” I hear you Windows customers cry, and since that is Linux, there does not have to be.

The means I envisioned it, I would arrange the Pi usually and use it primarily as a boot disk. I would host all my paperwork and media information on the network-attached storage (NAS) field, and all could be nicely. The NAS shares could be accessed through community filesystem (NFS), and I would just mount them as directories on the Pi.

Quite early on, I elected to maneuver my total dwelling listing onto the NAS, and this has labored nicely, with some quirks. The downside I confronted was a Pi quirk, and though I used to be certain there was a repair, I needed to get it up and operating earlier than the Mac lastly crapped out. When the Pi boots, it appears to allow the networking half fairly late within the sequence, and I discovered that I could not do my NFS mounts as a result of the networking interface hadn’t come up but. Rather than hack round with difficult scripts, I made a decision to easily mount the NFS shares by hand after I would logged in after a profitable boot. This appeared to work, and it is the answer I am utilizing now. Now that I had a fundamental technique, it was time to implement it on the “live” machine.

That’s the great thing about working with the Raspberry Pi—you may shortly hack collectively a testbed and have a system up and operating in underneath 30 minutes.

Regarding video, I purchased an HDMI-to-DVI cable to make use of with my Dell monitor, and in GUI desktop mode, this comes up as 1280×1024—lots adequate for my use. If you might have a monster flat-screen TV, you may all the time use that as a substitute.

My software program setting

Operating system

I in the end selected Arch Linux for ARM 7H because the working system. I am a Raspbian veteran, however I did not want the tutorial software program that comes with it (I’ve different Pis for that). Arch gives a minimal setting however is full-featured, well-supported, and highly effective; it additionally has bucket-loads of software program obtainable. After its preliminary set up, I would used simply over 1.2GB of area, and even now, with all my software program on the microSDHC, I am solely utilizing 2.8GB of my 8GB card. Please be aware that the Pi 2 is formally Arch Linux ARM 7, not 6.


I needed a graphical desktop setting (despite the fact that I am a command-line sorta man), however it wanted to be in line with the lean and imply ethos. I would used LXDE earlier than and was proud of it, so I put in it; GNOME and KDE had been simply too massive.

Web browser

The internet browser was a little bit of an issue, however after attempting the default Midori, Epiphany, and a few others, I made a decision on Firefox. It’s a bit flabby, however it follows requirements nicely, and if you are going to digitally signal LibreOffice ODT paperwork, you will want it anyway. One downside on a machine of this energy is the super toll that web-based advertisements place on the general reminiscence utilization. In truth, a badly advert’ed web page could make the browser cease fully, so I needed to make these advertisements disappear. One means could be to put in an ad-blocker plugin, however that is one other hit on obtainable reminiscence, so an easier methodology was referred to as for.

As it is a Linux field, I merely downloaded an ad-blocking hosts file. This is a tremendous piece of neighborhood work that consists of over 15,000 hostnames for mainly any server that spits out advertisements. All the entries level to an IP deal with of, so there is no time wasted and your bandwidth’s your personal once more. It’s a free obtain and might be added to the top of an present hosts file. Of course, the most important worth, so far as I am involved, is that web page load instances are a lot faster.

The display screen seize under reveals an ad-free Firefox overlaid with the identical web page in ELinks.

No advertisements in both, however if you happen to do not want all the attention sweet rendered by Firefox, ELinks will present a super-clean expertise. (Normally, all that whitespace within the Firefox picture is stuffed with advertisements.) The ELinks browser is an fascinating hybrid browser that’s primarily text-based and is just like the traditional pure-text Lynx browser.


It could be overkill, and undesirable from a safety standpoint, to have Microsoft Skype on the Pi, so I made a decision on a Jabber/XMPP consumer, Psi. Psi has the benefit of not having a large number of dependencies, and it additionally works very well. It’s straightforward to participate in multi-user chats, and I’ve one other Pi internet hosting a Jabber server to check it on. There’s no character-mode model, sadly, and many of the text-based purchasers I attempted had issues, so it is a GUI-only state of affairs for the time being. No matter; it really works nicely and does not use a number of sources.


I additionally tried plenty of electronic mail functions: this was simply an important utility. Eventually, I selected Claws Mail. Sadly, it does not do HTML mail, however it’s rock-solid dependable. I’ve to say that I can not get the GNU Privacy Guard (GPG) plugin working correctly but as a result of some unresolved model points, however I can all the time encrypt messages in a terminal, if want be.


Music is vital to me, and I selected SMPlayer as my media participant. It helps many choices, together with playlists for native and networked information and web radio streaming. It does the job nicely.


I will not go into the video participant in any nice element. Bearing in thoughts the specs of the Pi, reliably taking part in again a video stream, even on the identical community, was problematic. I made a decision that if I needed to look at movies, I had different gadgets extra suited to it. I did attempt to experiment with the gpu_mem setting within the /boot/config.txt, switching it from the default 64MB to 96MB. I used to be ready to borrow a little bit of utility reminiscence for the video participant, however even that did not appear to make it work nicely. In the top, I stored that setting in order that the desktop setting would run extra easily, and thus far, I have not had issues. The irony of that is that I’ve one other Pi that has a DLNA server put in, and this could stream video exceedingly nicely—not simply to at least one consumer, however a number of. In its protection, although, it does not have a desktop setting to cope with. So, for now, I do not trouble attempting to play video.

Image processing

I have to do easy, light-weight picture and picture modifying, and I knew from prior expertise that GIMP and comparable packages would convey the Pi to its knees. I discovered an app referred to as Pinta, which resembles an enhanced Microsoft Paint, however with extra cojones. As somebody with a big picture assortment, I additionally wanted a slideshow utility. After a lot analysis, I made a decision on feh. Normally run from a terminal throughout the GUI desktop, it has an unbelievable array of choices that may enable you to produce a picture slideshow, and once more, it has low reminiscence necessities.

Office suite

And then there was an workplace suite. On the outdated Mac Mini, I used to be fortunately (and legally) operating a replica of Microsoft Mac Office 2004, and I used to be really sorry to lose that. I simply wanted a Microsoft Word and Excel equal, however I had to remember the Pi’s limitations. Sure, there are standalone variations of word-processor and spreadsheet functions, however there was nothing that actually gave me confidence that I may edit a full-featured doc.

I already knew of LibreOffice, however I had my doubts about it due to its Java Runtime Environment (JRE) requirement, or so I believed. Thankfully, JRE was optionally available, and so long as I did not need to use (database) connection pooling of macros, there was no have to allow it. I additionally used as many built-in choices as potential, rejecting skins and themes; this introduced the general reminiscence footprint all the way down to an affordable stage, and hey, I am scripting this on LibreOffice Writer now! I adopted the angle that if it has a built-in theme, use it!

Here’s the present memory overview (in MB) from throughout the GUI desktop:


Other desktop software program I’ve put in (not a lot as I needed with a view to hold this a minimal set up) is:

  • FileZilla: SFTP/FTP consumer
  • PuTTY: SSH/telnet terminal frontend
  • Mousepad: A flexible plain-text editor, just like Wordpad or Notepad, however rather more highly effective [Note: this link was broken. Is this ok?]

Overall, all the setup works as meant. I’ve discovered that it performs nicely, if a little bit sluggish typically, however that is to be anticipated, because it’s operating on a Raspberry Pi with a 900MHz clock pace and 1GB of reminiscence. As lengthy you are conscious of and ready to just accept the restrictions, you may have an affordable, very purposeful system that does not take up all of your desk area.

Lacking in characters

Life with a Pi desktop is just not all concerning the GUI; it is a very competent command-line setting too, do you have to want one. As a Linux developer and geek, I’m very comfy in a character-mode setting, and that is the place the Pi actually comes into its personal. The efficiency you may count on within the command-line setting, a minimum of in my configuration, relies on plenty of elements. I am restricted to a sure extent by the Pi’s network-interface pace and the general efficiency of my Netgear ReadyNAS 102, one other barely underpowered, consumer-grade ARM field. The one factor that did please me, although, was the noticeable improve in pace over the Mac Mini!

Running in a local terminal setting, that is the everyday reminiscence utilization (in MB) you may count on:

One factor to notice is the shortage of a swap partition. It’s usually accepted that any sort of swap system on a Raspberry Pi is a Very Bad Thing™ and can put on out your SD card very quickly. I thought of establishing a swap partition on the NAS field, however I dominated this out early on, as it could very negatively affect the community as an entire, and as with the NFS mount situation, the swap partition would have to be mounted earlier than the community got here up. So no go.

Having lived with Raspberry Pis for a while now, let’s simply say that one has to be taught to set issues up rigorously within the first place to keep away from the necessity, and in the end, it could train you to handle computer systems higher.

As a part of my efforts to make the Pi as helpful as potential, I needed to envision a state of affairs the place no matter I used to be engaged on was both so resource-hungry that I could not run a GUI desktop or the GUI was simply not required. That meant reproducing as lots of the desktop-only apps in a character-mode setting. In truth, this was simpler than discovering the equal desktop apps.

Here is my present lineup:

For the whole lot else, it is only a query of flipping again to the GUI desktop. Speaking of which…

Quite a busy display screen, however the Raspberry Pi handles it nicely. Here, I am utilizing LibreOffice to write down this text, there is a community standing field, Firefox is on the mpg123 web site, and there is a terminal operating prime exhibiting how a lot reminiscence (is not) getting used. The drop-down menu on the left reveals the workplace suite apps.

Other eventualities and ideas

What’s the place

With any hybrid system like this, it is vital to recollect what’s positioned the place in order that, within the occasion of any issues, restoration will likely be simpler. In my present configuration, the microSDHC card incorporates solely the working system, and as a lot as potential, any system-configuration information are additionally on there. Your personal userland knowledge will likely be on the NAS in your house listing. Ideally, you ought to be to interchange or replace the software program on the microSDHC with out having any hostile results in your computing setting as an entire, however in IT, it is by no means that easy.

In the X11 GUI desktop system, though there’s a default config file in /and many others/X11, you’ll invariably have a personalized model containing your personal preferences. (This is by design.) Your personal file on the NAS, nonetheless, will reference information on the microSDHC:

The general impact is that if you happen to change one setting for one more, you’ll invariably expertise a change (or loss) in performance. Hopefully, the modifications will likely be minor, however you do want to concentrate on the typically ambiguous hyperlinks.

Please keep in mind that the root person will all the time be on the microSDHC, and in case your NAS field fails for any purpose, you will nonetheless have the ability to boot your system and a minimum of do some restoration work.

NAS alternate options

While I am in my dwelling workplace, I’ve full entry to my NAS field, which represents what (in at this time’s terminology) could be a private cloud. I a lot want this answer to a business cloud that’s invariably managed by an organization of unknown origin, location, safety, and motives. For these causes, I’ll all the time host my knowledge the place I can see it and bodily get to it as required. Having mentioned that, you is probably not as paranoid as I’m and can need to hook up your Pi desktop to an exterior cloud share.

In that case, utilizing an NFS mount as a foundation on your dwelling listing ought to imply that it is merely a matter of modifying your /and many others/fstab to level the NFS consumer at a special location. In my setup, the NAS field is known as, er, NASBOX, and the native NFS share mountpoint is known as /NASmount. When you create your non-root person, you will merely transfer their dwelling listing to an present listing referred to as /NASmount:

NASBOX:/knowledge/yourshare /NASmount nfs
nfsvers=three,rsize=8192,wsize=8192,timeo=60,intr,auto zero zero

mount -t nfs -v NASBOX:/knowledge/yourshare /NASmount

after which your listing tree may seem like this:


So, by merely altering the /and many others/fstab entry, you would shortly be hooked as much as another person’s cloud. This, as they are saying, is left as an train for the reader. As an much more fundamental different, you would simply neglect the community facet fully and as a substitute use a USB reminiscence stick in one of many spare ports.

Backups and safety

On most computer systems, backups are achieved solely often, if in any respect, however I make sure that to again up my Pis frequently.

The simplest way, so far as I am involved, is to only copy the entire SD card and put it someplace secure. In truth, there is a script to do it, and even higher, it may be achieved whereas the Pi is operating and with out powering it down. rpi-clone makes use of rsync to fast-copy the contents of the present card onto an identical-capacity card connected to a spare USB port, and it’ll even partition and format the vacation spot card as a part of the method. An 8GB card will take roughly 10 minutes end-to-end and, as soon as it is full, you might have the internal glow of satisfaction figuring out that, if the supply card is corrupted, you may merely swap it on your sizzling backup and keep on working.

In phrases of safety, a microSDHC is a tiny machine, and if issues get actually determined, you would all the time swallow it. Only joking… nicely, form of. Please be aware that on the Raspberry Pi Model 2, inserting a USB card (hopefully) will outcome within the card being acknowledged and browse. On the Model B and presumably B+, it leads to a reboot, so if you happen to’re doing one thing very important, please keep in mind this.

At some stage, you must again up your private home listing, despite the fact that it is on a NAS, which by definition, is a spot during which your stuff is held securely (as in “resistance to hardware failure”). The most dependable methodology I’ve discovered is to make use of rsync to again as much as an exterior machine. In my case, the exterior machine is an encrypted USB reminiscence stick that may be inserted into the Pi at any time. As all the time, there are a number of factors to notice:

  1. Is your goal machine sufficiently big to carry your total dwelling folder? Surprisingly, my content material and config information will comfortably slot in 2GB, as all my massive media information are mounted as NAS shares.
  2. I’ve to recollect to unmount any giant media repositories earlier than I run the backup; in any other case, rsync will fortunately observe the paths, and I find yourself attempting to repeat 43,000 photographs and 9,000 music tracks onto a 2GB reminiscence stick.
  3. Keep your reminiscence stick secure and ideally encrypted; you are placing your entire digital life in a single place, and also you would not need to lose it.

Here’s the command to run my backup:

rsync -azvh --exclude /Downloads/ --exclude .cache/ /NASmount/dwelling/person/

I’ve excluded some folders that include both numerous transient information or probably very giant downloaded information. You might have so as to add extra folders as you see match.


There’s little question in my thoughts that the Pi as a single-board laptop is extraordinarily versatile, not solely in what it provides in software program and but additionally in offering new inexperienced computing choices. It’s bodily small, so it may be transported simply, and the microSDHC is tiny sufficient to be stored in a pockets or purse. No extra lugging a laptop computer by way of airport safety: put the Pi in your checked baggage and your “hard drive” is secure with you. Even if the Pi is stolen, they’re so frequent which you can purchase one nearly anyplace.

Then there are the ability choices: it wants 5v at two amps, most, so you may run this from a battery—both a pocketable, rechargeable unit or one with a photo voltaic panel. That’s undoubtedly one thing I’ve to attempt!

Multi-user collaboration instrument? Yeah, why not! Set up a Pi as an SSH server (trace, that comes commonplace), and get your builders to log in securely and create, edit, and compile supply code. This could be in a text-mode setting although: though SSH has the choice to ahead X11, the Pi’s lack of energy could be an issue. Here’s an image of me connecting through my Android telephone utilizing ConnectBot. Practically any platform and consumer combo might be used.

So, the place to subsequent?

Well, it has been a tough however enjoyable journey attending to this stage, and I can say that I’ve discovered considerably extra about Linux in comparison with after I began out.

Right now, I can say that my computing setting has stabilized, and I can do virtually the whole lot I used to do on the outdated Mac Mini plus fairly a bit extra. The system stays lean and imply, and I do not intend to put in something main within the close to future. My main annoyance is just not having the ability to print, and I am unlikely to have the ability to repair this within the close to future, however I will revisit it when I’ve time.

Likewise with my video playback state of affairs. To provide you with some thought, I attempted to view Pharrell Williams’ “Happy” video the opposite day, and whereas the sound performed high-quality, I used to be nonetheless watching the video in slo-mo 30 seconds after the tune completed. But hey, you may’t have the whole lot…

Incidentally, the Raspberry Pi Model 2 has been hailed as a machine that may run Windows 10: I am certain there’s a component of reality on this, however given the limitations, I do not see how that is potential and even fascinating. Maybe I am flawed. We’ll see (however I will not be attempting it!).

Most Popular features the latest multimedia technologies, from live video streaming to audio packages to searchable archives of news features and background information. The site is updated continuously throughout the day.

Copyright © 2017 Breaking Express, Green Media Corporation

To Top