What does it mean when there pink vertical lines on the start up screen?

What does it mean when there are pink vertical lines on the start up screen on an IMac ?

It means you have a hardware problem. That could be the screen itself or the graphics system, GPU.

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What does it mean when there's a _ at the beginning of a username?

Example: _softwareupdate
Thanks.

OS X started using _ on system groups a few releases back; that convention started with 10.5.
I'd start your own thread for the groups question. As for any group limit, haven't seen that one with OS X; if you're hitting some limit with groups or ACLs or a tool you're using, you'll want to post up some details of the version (10.8?), the volume structure used the output of the id command and the ls -ale@ for the ACL.
The local root account has twenty groups, so I'm not sure what you're seeing with that limit.
Alternatively, you can log a bug directly with Apple asking for the limit to be increased.

HT1338 what does it mean when there is one long beep?

What does it mean when there is one long beep?

See this article. By the way, the reason no one responded is because Mac OS X 10.3 and 10.8 are mutually exclusive, and can't run on the same machine.

What does it mean when there is an I tunes symbol on the screen with a charging cable underneath that?

What does it mean when there is an I tunes symbol on the screen with a charging cable underneath that?

Turn on the computer. Take the charging cable and connect one end to the bottom of the Touch and the other to a USB on your computer (back of the computer if this is a desktop computer). iTunes should open automatically and will probably give you a message it has detected an iPod in Recovery mode. Follow the onscreen steps from there and Restore it from any backup on the computer.

HT1695 What does it mean when my wi-fi indicator in the status bar is gray instead of blue?

What does it mean when my wi-fi indicator in the status bar is gray instead of blue..it is blue when using the Fox news and local TV station app..but gray when using the CNN app--all on my home wi-fi. Thanks.

What does it mean when my wi-fi indicator in the status bar is gray instead of blue..it is blue when using the Fox news and local TV station app..but gray when using the CNN app--all on my home wi-fi. Thanks.

HT201299 what does it mean when you get this message on the Iphone? "online maps consume data traffic"

what does it mean when you get this message on the Iphone? "online maps consume data traffic"

That means that if you use online maps, it will consume data. If you're on WiFi, no worries. If you are on cellular data, then it will eat into your cellular data plan.

What does it mean when there is a flashing file folder with a question mark when trying to start computer?

When I try to start my computer a flashing file folder with a question mark is on the screen. I can't open anything up. What does this mean?

There are four general causes of this issue:
1. The computer's PRAM no longer contains a valid startup disk setting when there aren't any problems with the disk itself. This can be checked for by pressing the Option key and seeing if the drive appears.
2. The internal drive's directory structure has become damaged. This requires usage of an alternate bootable system to perform the repair.
3. Critical system files have been deleted. This requires usage of an alternate bootable system to reinstall them.
4. The internal drive has died or become unplugged. This is the most likely case if the computer took a sharp impact or there are unusual sounds coming from its location.
(104258)

What does it mean when there is a red slash through an app that is listed with my apps?

When I go to my computer and to the App Store I have noticed there is a big red slash mark on some of my apps. What does this mean?

It usually means that you may have upgraded the version of OS X to a version with which these apps are incompatible.

What does it mean when there is a small red light next to my ear piece?

There is a small circular red light lit up near my ear piece, I've never seen it lit up before and I haven't had my phone wet except for a few drops on the screen that were wiped away shortly after....
What does this mean? I'm freaking out!

It usually means that you may have upgraded the version of OS X to a version with which these apps are incompatible.

TS4124 what does it mean when there is an icloud icon in itunes that has a down arrow in the middle of it?

I am having trouble with my itunes account because some of my song will not let me play them because they have an icloud icon with a down arrow in the middle and whenever I click on the song to play it a message pops up and says "You must authorize this computer before you can download the previous purchase". what does that mean and how do i fix it?

The iCloud icon is used to re-download your already purchased content from iTunes
To authorize your PC click Store in the Menu Bar and then Authorize This Computer
Note: If using iTunes 11 press Alt or Ctrl+B to show the Menu Bar

What does it mean when there's a picture of a lock with an arrow going around it? (it's showing up next to the battery life %)

this pic of a lock with an arrow going around it popped up today. what does it mean???? It is located on the top of my iphone next to the battery life percentage. Help??!

This is covered in the manual. it explains all the icons.
Have a look:
iPhone User Guide (For iOS 4.2 and 4.3 Software)

What does it mean when there isn't enough room to run a program?

My desktop tends to go blank and when I try to open programs such as Excel or Word a message comes up saying there isn't enough memory to run. Anyone know what could fix this? Also I opened iPhoto and it asked if i wanted to open iPhoto or iPhoto, not knowing the difference, I picked the first one and almost all of my photos were gone.

there are a couple of ways to fix this.
1) run less applications at one time, meaning make sure they are truly closed and not just off.
2) get a ram upgrade. this can be done by yourself or by taking it to an apple store.

What does it mean when there is a pop up that says your start up disk is almost full?

Im not sure what this means at all? My computer has been acting very slowe lately and stalls quite often!
If this has any relevance i do have alot of pictures on my computer!

For a hard drive try Newegg.com http://www.newegg.com/Store/SubCategory.aspx?SubCategory=380&name=Laptop-Hard-Dr ives&Order=PRICE
Or OWC http://eshop.macsales.com/shop/hard-drives/2.5-Notebook/
Here's instructions on replacing the hard drive http://creativemac.digitalmedianet.com/articles/viewarticle.jsp?id=45088
To transfer your current hard drive I like the free application Carbon Copy Cloner. It makes a bootable copy of everything on your hard drive http://www.bombich.com/index.html You'll need a cheap SATA external hard drive case. Put the new drive in the case, partition and format it, and clone your old drive to the new one. Then replace your old hard drive with the new one.
Here's a cheap SATAexternal hard drive case on eBay http://cgi.ebay.com/USB-2-5-SATA-HDD-HARD-DRIVE-EXTERNAL-ENCLOSURE-CASE-BOX-/120 636286623?pt=PCC_Drives_Storage_Internal&hash=item1c167ba69f

HT1498 What does it mean when there is a movie that has "available for rent" on a date that has passed already, but you still are not able to rent it?

Really want to rent a movie through my Apple TV and it says "available for rent 4/8," but it is 4/25 and it still isnt available. Just curious.

The studio hasn't supplied it or given the rights for iTunes to rent yet. If you want an official answer contact iTunes.

What does it mean when a box pops up saying "The song could not be used because the origional file could not be found. Would you like ot locate it?"

A while ago, I was cleaning out some old pictures and music from my computer. I noticed there were a lot of songs that I did not recognize, and they had nothing to do with my itunes. I figured my step-dad or sister might have put those songs on my computer or something. So I deleted a few of them. The next day or so I realized all my music was gone from my itunes. I still had the account but everything was wiped clean, my music and playlists. I plugged in my ipod hoping it would restore all my music but nothing happened, I still had my music on my ipod and my cell phone. A friend of mine took my ipod, and put all of the music on a hard drive, gave me the hard drive and I transferred all of it in a folder onto my desktop. Then I drug that entire folder into my itunes library. When I click to play a song through itunes a box pops up and says "The song could not be used because the original file could not be found. Would you like to locate it?" When I click on the song to play it in the folder, it will go to itunes and then play it through there. But I cant just go click on the song in my itunes and play it.

It means the media is not where iTunes expects it to be.
iOS devices are not and have never been backup devices.
Are the files in question still on the computer?
If not, you should restore them from the backup of the computer. You do have a backup, correct?

What does it mean when there pink vertical lines on the start up screen?

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