Running two OS's on a partitioned internal HD.

Hi there. Just a quick query about running two OS's in parrallel on an internal, partitioned HD. Is it possible for ML and SL two run on one computer (not at the same time) The reason for this is because I use Serato Scratch DJ software quite a bit, but ML does not yet support the software, and by the look of it might not for a while. Im thinking of running SL on a small partioned part of the HD when Im out gigging but still be able to use ML for the rest of my workflow...Hope this doesn't sound to strange.Many thanks.
MBP 2.9GHz i7
8G Ram
750HD

Yes, as long as the computer didn't originally ship with Lion or Mountain Lion.
(69804)

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Simultaneously run two counters with the internal 80MHz timing

Hi, I have a programming problem about the NI PCI-6602 counter card. I want to use the internal timing signal (80MHz) as the source signal and feed two external signals to the two counters. The operation mode is the Buffered Period Measurement.
I can succeed in one counter programming by using these old DAQ functions calls in sequences:
    iStatus = GPCTR_Control(iDevice, ulGpctrNum, ND_RESET);
    iStatus = GPCTR_Set_Application(iDevice, ulGpctrNum, ND_BUFFERED_PERIOD_MSR);
    iStatus = GPCTR_Change_Parameter(iDevice, ulGpctrNum, ND_SOURCE, ND_INTERNAL_MAX_TIMEBASE);
    iStatus = GPCTR_Change_Parameter(iDevice, ulGpctrNum, ND_GATE, ND_PFI_38);
    iStatus = GPCTR_Change_Parameter(iDevice, ulGpctrNum, ND_INITIAL_COUNT, ulInitCount);
    iStatus = GPCTR_Change_Parameter(iDevice, ulGpctrNum, ND_BUFFER_MODE, ND_CONTINUOUS);
    iStatus = GPCTR_Config_Buffer(iDevice, ulGpctrNum, 0, ulCount, pulBuffer);
    iStatus = GPCTR_Control(iDevice, ulGpctrNum, ND_PROGRAM);
    while(RunStatus)
       iStatus = GPCTR_Read_Buffer (iDevice, ulGpctrNum, readMode, readOffSet, NumPtToRead, timeOut, &NumPtRead, buffer);
       m_Chart1.DoPlot(); // Plot the data
iStatus = GPCTR_Control(iDevice, ulGpctrNum, ND_RESET);
But when using two counters, I tried to open two individual counter tasks by just doubling the codes above (each counter has independent DMA buffer). The program hanged forever. After debugging, the codes stop after it comes to read the 2nd DMA buffer (the 2nd line below).
iStatus = GPCTR_Read_Buffer (iDevice, ulGpctrNum0, readMode, readOffSet, NumPtToRead, timeOut, &NumPtRead0, buffer0);
  iStatus = GPCTR_Read_Buffer (iDevice, ulGpctrNum1, readMode, readOffSet, NumPtToRead, timeOut, &NumPtRead1, buffer1);
I also tried to check the labview codes that I have for the implementation of 2 counter measurement. There are two sets of function calls for each counter, "Counter Group Configure" -->"Source Slection" --> "Gate Selection" --> "Buffer Configure", in the same sequence structure, and two "Buffer Read" calls in a later, but also the same, sequence structure. My C programming is done just by following the labview codes above. But the labview program doesn't crash like the C program. Besides, one more question that I found is that I cannot find the fundtion "Counter_Group_ConfigInterface" inside the C function library. I tried to use the function "CTR_Simul_Op" but failed.
So, my problem is that what's the problem about my C codes and how can I do the two counter measurement by the same internal timing base. Sorry to put all the problem in such a mess. If you need more information about my codes or my experimental requirement, please let me know. Thank you for your help!
Sincerely,
Jung-Cheng

Hi Pavani,
Welcome to the forums! As a new LabVIEW user there are many helpful resources out there to get you started. I would like to point you to the two links in my signature. The first is a six hour LabVIEW course and the second helps you learn DAQmx. Also take advantage of the shipping examples. When you open LabVIEW select Find Examples to open the Example Finder. Assuming you are using DAQmx, you can go to Hardware Input and Output>>DAQmx>>Counter Measurements and find many useful example programs that either do what you want or can be modified to perform the task you desire.
To answer you question, two counters in the same loop do not affect each other. The counters will gather data separately. By putting them in the same loop, you just perform the reads in software at the same time.
Regards,
Ima
Applications Engineer
National Instruments
LabVIEW Introduction Course - Six Hours
Getting Started with NI-DAQmx

Is it possible to run two different versions of Apple operating system (for ex. 10.6.8 and 10.9) on a MacBook Pro, either on the same disk or from an external hard disk? If so, where would I find the details?

Is it possible to run two different versions of Apple operating system (for ex. 10.6.8 and 10.9) on a MacBook Pro, either on the same disk or from an external hard disk? If so, where would I find the details? (In order to be able to use the older applications no longer supported in 10.9)

If you want to add a second partition to the internal drive (in Disk Utility, select the drive, then open the partition tab and just click the + button), you should first be sure that you will have enough room to accommodate whatever the second volume will be. I am currently doing this for Snow and Mountain Lion.
To get to whatever volume is not the startup disk, restart and hold down option/alt at the chime, which will bring up a selection of the two volumes. Use the left or right arrow keys to select it and then hit enter/return.

Can a mac mini be set up to run two separate users at the same time?

I work for a middle school and we need to purchase 20 computers that will just be used to run internet apps. Though we have all Macs, we don't have a big budget and for this one use only, we are condsidering purchasing inexpensive HP all-in-ones for about $450 each. However, I was wondering if a Mac Mini can be first set up with 2 partitions, install the OS on both partitions, then run two different users, with two separate monitors and keyboards, at the same time? This way, instead of purchasing 20 Windows computers, we could purchase 10 Mac Mini's (and displays) and save money, and still be supporting just one OS throughout the campus.

If you setup a server, as in the Mac OS X Server Installation, pages 23ff show configurations, you can have multiple users, but they must all have computers. Some installations can be done with dumb terminals but that is not what you seem to want. Unix machines do have a multiple simultaneous user capability but you still have to have a computer for each user, again, not what you seem to want to do. Right now there are two other users logged in on my Sun workstation on the desk behind me...they are logged in because I permit them to do so.
And last night for an experiment I connected my iMac and MBP by ethernet wire, logged in on the iMac, then logged in on the MBP and from there on the iMac...but I set up the network to permit that and then disabled it again. You can create security holes doing things like this.
As dwb points out switching from Apple to PC equipment is a false economy that lures in administrators. In our county school system we had a superintendent who hired a good friend...who had PC-industry ties. Decided to remove all Apple equipment from the elementary schools and switch to PCs. It wasn't long before they ended up going on a 4-year cycle of "refreshing" the equipment, i.e., completely replacing all hardware in every school on a four year cycle. Since my wife was a Media Specialist, aka librarian, and responsible for technology in her school, every four years she had to develop a complete school map of where each teacher wanted the computers in their classrooms, complicated by where the technicians predetermined the locations of the network wire drops, of course. then teachers get shuffled over the summer and all the plans are for naught.
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HT1347 How do I run two libraries from one computer?

How do I run two libraries from one computer? One library is on the computer's hard drive, the second library is on an external hard drive. The computer that had the external hard drive crashed and I need to fix the iTunes library on it. How can I do this without corrupting the library on my internal hard drive?

Launch iTunes with the Shift key held down and either create a new library or choose the one on the external drive. Any rented movies downloaded from another computer won't play.
(81212)

Running two different versions of mac os on same machine

I have canon software that only works in 10.4 wheras I'm on 10.5. Initially I was thinking I could use bootcamp to install 10.4 on the same machine and run the software but then I heard about paralels and thought I might be able to do this. Can I run two different versions of mac osx on the same machine, and if so how easy is it to switch between versions?? Thank you!!

tmx3 wrote:
Cool, thanks very much for the advice. If I am running 10.4 on an external is there anything I should bear in mind? Size wise what are the considerations?
I have 10.4.11 running on a small partition on my TM drive on each of my MBPS. They were and are my Tiger backups when I first installed Leopard. They run, I update them and occasionally use them.
Just hold down Option key on boot and the Tiger OS shows up. They are clones, created with SuperDuper. CCC works equally as well.

How can I run two different versions of Firefox, the latest does not work with an important site I need to use?

With the latest version of Firefox I cannot send "Quick Mails" to my students using the college's ANGEL system. I had to uninstall it and go to an earlier version. I prefer the newest rev.
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Thanks,
Kim

Currently I don't think there is a way to run two version of firefox at the same time. But you can install Firefox Beta or Aurora instead (which is build for future release for firefox) and help test it! Here's the link:
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Running two copies of iTunes on one MAC

I have a couple of different user sign-ons on my MAC, I need to be able to access iTunes on both, but I want them both to share the same library. Is this possible?
I tried setting up iTunes for the second user and it had no songs, so I tried to reroute the access back to the original users library. Well after changing the access to the original user, I was able to get the songs in the second iTunes.
However, now the iTunes from the original user ID can't find most of the songs even though I did not change their locations!
So I have 2 questions.
1) Can you even run two iTunes under different User IDs that can access the same iTunes library? If so, how?
2) If you can't, how do I get my original iTunes to see all my songs again without having to go through them one at a time? I have over 17,000 songs!
Thanks!

This should help:
iTunes: How to share music between different accounts on a single computer
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Can I run two separate versions of the LabVIEW Run-Time Engine on one PC?

Hello, I am curious if anyone knew if it is possibly to install and use two separate versions of the LabVIEW Run-Time Engine on one PC? I currently have the 2009 Run-Time Engine installed on one machine and wanted to install the 2011 Run-Time Engine as well. I know that you can run two separate versions of the LabVIEW program on one machine, but what about the Run-Time Engine?
Thanks!
Solved!
Go to Solution.

I'm guessing this is a bug that NI needs to fix. I see no reason you shouldn't be able to install the run-time engine of an older version. I'd be interesed in if it allows you to install the older development environment, which also includes the older run-time engine. There are some command line switches for NI installers as mentioned here:
http://digital.ni.com/public.nsf/allkb/C361087EE9F20810862577850073128E
I wonder if there is a force install option.
Unofficial Forum Rules and Guidelines - Hooovahh - LabVIEW Overlord
If 10 out of 10 experts in any field say something is bad, you should probably take their opinion seriously.

How to run two icalenders on the same computer?

How can i run two separate icalenders on the same computer? I have my own icalender with work, home, etc, and it's totally full. I am now running an artists collective and will publish the collectives icalender on the web. I don't, however, want to mix what will be a pretty busy calender with my own already too full one. Is it possible to run two totally separate calenders on the same computer?
macbook Mac OS X (10.4.8)

trsv,
Welcome to Apple Discussions.
Create two Groups...
Calendar 1:
Work
Home
etc
Calendar 2:
Collective Calendar
You can then switch which groups you wish to display by activating/deactivating the check mark in the Calendar source window.
That will also allow you to selectively publish the Collective Calendar.
;~)

How to run two query in the same preparedStatement

Hi all,
Please tell me how to run two queries in the same preparedStatement object ?
In my module I have to run two queries and I don't want to make two methods for running two different queries.
I just want to call this method for both of my queries.
methodName(long param)
Connection conn=null;
PreparedStatement pstmt=null;
//////////////// some coding
Please Help !
Thanks in advance
amitindia

    public void foo()
        Connection connection = null;
        PreparedStatement stmt = null;
        try {
            connection = ...get from pool...;
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            stmt.close();
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            stmt = connection.prepareStatement("...");
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            if (stmt != null) ..close it...;
            if (connection != null) ..return it to pool...;
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Will the ATI Radeon 700 AGP card run two Studio 21 Displays?

I just bought a G4 MDD 1.4 GHZ Mac that has what I assume was the stock video card, which appears to be for LCD displays, since the cables from my Apple 21" Studio displays (CRTs) don't match up to it (those are called VGA monitors, right?).
On my present Mac (G4 Quicksilver) I am running both of these 21" Studio Displays, one plugged into the stock AGP card and the other connected to a PCI video card. As I prepare to switch over to my "new" MDD Mac now, I need to figure out how best to run the two monitors with this G4. (I will leave the video cards in the old Quicksilver and give it to a relative who also wants to run two monitors with it).
I notice a new Radeon 7000 AGP card being offered on Ebay which has one VGA port, and they provide an adapter so that the second (DVI) port can also run a VGA monitor. If that card would run both my 21" Studio Displays independently as claimed, it would be the ideal solution, if the performance is adequate.
I do lots of Photoshop(CS2)adjustment of digital camera images and also make video movies with Final Cut Express, iDVD, etc., with both monitors set to 1152 X 870 at 75 Hertz. Would such a card as this one be up to the task with both monitors?
Every time I try to post the link to the Ebay auction for this card, everything in this text box disappears. So I'll just copy and paste the description of the card from the auction: "ATI Radeon 7000 64MB DDR Dual Monitor capable AGP Video Card with VGA, DVI-I, and S-Video Out and a DVI to VGA adapter. The video card has ATI's latest firmware (v226) with the latest ATI Displays support. It does not have any sleep issues. The card is capable of dual true independent/simultaneous monitor support with extended desktop. The adapter allows for dual VGA operation. This model has been tested in a G4 Tower, G4 Cube, and G5 with several versions of OS X including OS 10.4/Tiger. This card is guaranteed to work in any Macintosh G4 Tower, G4 Cube, or G5 Tower with OS 9.2.2 or later that has an available AGP slot."
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Any advice most appreciated.
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Thanks for the info Malcolm. I checked out those links you provided, and it appears that buying two adapters for the presently-inistalled video card which would allow it to run two VGA monitors looks like a workable solution, all right. But it would be more expensive than just buying that Radeon AGP card to run both monitors, if the latter would work (that's what I'm still wondering).
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I appreciate the info, but I'm still favoring the Radeon 700 AGP card if someone can tell me it might work.
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Thanks again,
Tom

Running two displays from one DVI port...time to put my ADC down

Hi Guys,
I have a G5 dual with a GeForce FX 5200 which has 1 each of DVI+ADC ports. Until recently the 17" Apple display has been my only monitor. As I have a recording/mix studio I need to move the G5 base unit far away from any recording as it makes quite a lot of noise. I have been unable to do this as I have been having trouble finding either a Dr Bott or Griffin ADC extension. I have been searching off and on for over a year with no success.
Recently I purchased a cheap reconditioned NEC monitor which I am running from the DVI port and am thinking perhaps now is the time to get rid of my apple display due to the ADC connection troubles.
Is it possible to run two monitors from the one DVI port? I need to run a mirrored image so that I have one monitor to my side so that I can do close editing work and then one further away behind my analogue mixing desk, they need to show exactly the same thing.
Will splitting the DVI port degrade signal or is there a way around this. I also want to get some long cables 6m+ so that I can place the base unit outside of the control room, will this be a problem?
I would really appreciate some help on this matter.
Thanks,
Iwan

Thanks BSteely, Would you happen to know of a box to recommend? I guess something like this would be more suitable:
http://www.amazon.co.uk/StarTech-com-Port-DVI-Video-Splitter/dp/B000MPL5ZC/ref=s r129?ie=UTF8&s=electronics&qid=1272121514&sr=1-29
Than this:
http://www.amazon.co.uk/Ex-Pro-Premium-Female-splitter-connections/dp/B003HE91CE /ref=sr140?ie=UTF8&s=electronics&qid=1272121514&sr=1-40
Thanks,
Iwan

Can I run two PIDs from the same vi?

Hi
I want to control speed of the rotating shaft and force applied by the pneumatic cylinder using two different PIDs from the same program.
I managed to get two PIDs to work separatly using PID control loop VI`s supplied with labview 6.1 (I got Kc, I and D right, so there is no overshoot). When I try to run both PIDs within my vi they don`t work. I again tried various gains and managed to get one PID to work but not the other. Then through trial and error I managed to get a second PID to work but I had to change refresh time of the FOR loop from 100msec to 1msec.
Does anyone have experience with running two PIDs in the same program? Does the timing of the FOR loop influence PID contorller? Does equiring of other data while run
ning PID has effect on the PID?
I would really appreciate any comments/help. I am pretty thrustrated at this time
Thanks"

The timing of the FOR loop will influence your PID control, which is a fundamental part of PID control. Acquiring data doesn't affect the PID although it could affect the timing of the loops. For instance if you only have one DAQ card you would want to have it all in one loop because you can not have two AI sessions open to the same card.
For more detailed information on PID I would recommend reading the "PID Control Toolset
User Manual" which should have been installed to your machine but can also be found at : PID Control Toolset User Manual"
Regards,
JR A.
Application Engineer
National Instruments

Can i run two PIDs at the same time?

Hi
I want to control speed of the rotating shaft and force applied by the pneumatic cylinder using two different PIDs from the same program.
I managed to get two PIDs to work separatly using PID control loop VI`s supplied with labview 6.1 (I got Kc, I and D right, so there is no overshoot). When I try to run both PIDs within my vi they don`t work. I again tried various gains and managed to get one PID to work but not the other. Then through trial and error I managed to get a second PID to work but I had to change refresh time of the FOR loop from 100msec to 1msec.
Does anyone have experience with running two PIDs in the same program? Does the timing of the FOR loop influence PID contorller? Does equiring of other data while
running PID has effect on the PID?
I would really appreciate any comments/help. I am pretty thrustrated at this time
Thanks

I don't know whcih PID vi's you are using but I had similar problems. I
solved it by going to the VI properties of the PID subvi, select category
execution and make sure that reentrant execution is selected. Only then two
instances of the PID vi can run without interfering each other.
Martien
solved by setting the execution mode
"smartlander" wrote in message
news:[email protected]..
> Hi
>
> I want to control speed of the rotating shaft and force applied by the
> pneumatic cylinder using two different PIDs from the same program.
> I managed to get two PIDs to work separatly using PID control loop
> VI`s supplied with labview 6.1 (I got Kc, I and D right, so there is
> no overshoot). When I try to run
both PIDs within my vi they don`t
> work. I again tried various gains and managed to get one PID to work
> but not the other. Then through trial and error I managed to get a
> second PID to work but I had to change refresh time of the FOR loop
> from 100msec to 1msec.
> Does anyone have experience with running two PIDs in the same program?
> Does the timing of the FOR loop influence PID contorller? Does
> equiring of other data while running PID has effect on the PID?
> I would really appreciate any comments/help. I am pretty thrustrated
> at this time
> Thanks

Running two OS's on a partitioned internal HD.

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