How do I delete Yosemite and use previous?

I HATE Yosemite! Since I made the mistake of downloading it, I have had nothing but problems. My battery life is draining, even when in sleep mode, it is much slower and I find more difficult to use. How can I get it off my MacBook Pro and get my previous operating system back? I have very little computer knowledge, so would need step by step instructions - please help!

Do you have such a backup?
How was it made?

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I have two Apple ID, how can I delete one and use the email address associates to the main one?

I have two Apple ID, how can I delete one and use the email address associates to the main one?

If you abandon one of the Apple IDs you will also basically be abandoning any content that you have acquired with that Apple ID. Content can only be updated and re-downloaded with the Apple ID that was used to buy it. Apple will not combine the content of Apple IDs and Apple will not transfer the content from one Apple ID to another Apple ID.

I am freeing up some space and am using osx lion, but i have 12gb of back ups, how can i delete these and what are they?

I am freeing up some space and am using osx lion, but i have 12gb of back ups, how can i delete these and what are they?

Gotcha.
Back-ups are what they are: a safety copy. If you feel you don't need them, you can trash them. They could be of a previous System if you upgraded, or something else. You wont get the full picture from looking at system profiler.
You may want to look into getting an external drive and offloading some stuff to it.

I'm using my new imac and now my safari is redirecting me to a russian search engine which is "yandex.ru" !! I can only enter a few websites without being redirected... !!! is that a virus and if yes how can I delete it and get! Do I have to have AV !

I'm using my new imac and now my safari is redirecting me to a russian search engine which is "yandex.ru" !! I can only enter a few websites without being redirected... !!! is that a virus and if yes how can I delete it and get! Do I have to have Anti virus !
Please help me ASAP!
Thanks
Dee

safari is redirecting me
Dee....
It's not a virus.
Your ISP (Internet Service Provider) is redirecting your browser. Use Open DNS to avoid that. Open DNS adds security and anti phishing filters and it's free.
Open System Preferences / Preferences then select the Network tab. Click the Advanced tab then click the DNS tab.
Click +
Enter these numbers exactly as you see them here.
208.67.222.222
Click +
208.67.220.220
Then click OK.
More about OpenDNS here.
Topic : Manually provided DNS server addresses are higher priority than DHCP's
http://www.opendns.com/newsletter

How do I delete music and photos from my iCloud account? I've read below that you can't. Really? Is that correct?

How do I delete music and photos from my iCloud account? I've read that you can't. Really? Is that true?

You can delete photo stream photos from iCloud by just deleting them on your iPod. My photo stream photos are automatically deleted from iCloud after 30 days anyway. Just so you are aware, deleting photo stream photos doesn't free up any space in your account as they don't use your personal iCloud account storage.
You can't delete music from iCloud because the music isn't stored in your account; it's stored in the iTunes store. What you are seeing are links to your previously purchased music in the iTuens store, allowing you to redownload them if you want to. You can't remove anything from your list of previous purchases. If you don't want to see these "iTunes in the Cloud" purchases in your song list, go to Settings>iTunes & App Store and turn off Music under Show All. LIke photo stream photos, this music doesn't use any of your personal iCloud account storage.

How do you delete videos and songs in iTunes?????

My delete option is in shady light gray font meaning you can't use this option. How do I delete songs and video?? Anyone?? Thanks!!!

If it the delete menu item is greyed out, then you likely do not have write permission for the file/folder/or drive the stuff is stored on?
Patrick

How do I delete history and bookmarks on iMac?

On the iPad, I could use Settings to delete history, but there s no such function on iMac. How do I delete bookmarks and Top Hits and history altogether?

Welcome to Apple Support Communities
To do it in OS X, open Safari and go to Safari menu (on the menu bar), so you will find an option called "Reset Safari" or something similar. Another way of removing history is to go to Safari menu -> Preferences -> Privacy, and press "Delete All Web Site Data".

Trying to update iPad mini. Old email continues to appear and can't authenticate. How to remove it totally and use my iCloud I.D.?

Trying to update iPad mini. Old email continues to appear and can't authenticate. How to remove it totally and use my iCloud I.D.?

If you have any apps that were acquired with the old ID they will always be tied to that ID. Delete them and reacquire them with the new ID that you have in Settings > iTunes and App Store

I have recently changed to an iMac from a Windows PC. How do I delete files and format the memory card in my helmet cam?

I have recently changed to an iMac from a Windows PC. How do I delete files and reformat the memory card in my helmetcam?

If you return the memory card to the helmetcam, it may choose to reformat it before use; back to some FAT-16 or FAT-32 format many of these third-party cards and cameras use. Unless you were going to use it for Mac OS X and format it with HFS+ or in a partition map for Mac data, etc.
If not, the easiest way to reformat the card may have been in the camera itself. I've formatted several kinds of camera cards, drives, USB flash drive, and others. The means varies with the intended purpose. Sometimes the default is the best; since it is platform neutral if the device is seen by both players.
Good luck & happy computing!

How can I uninstall yosemite and reinstall Loin with out losing all my in formation and programs

How can I uninstall Yosemite and reinstall Loin with out losing all my in formation and programsThis had been the worst os system apple has come out, too many errors
too many to list.
a few
Losing all mail. and watching them disappear in front of my eyes and could nothing about it
also when accessing cloud the screen just rolls in when accessing mail, like loading and loading and loading for 1 to 2 minuets.
I did not up grade my Mac Book Pro, and is working fine,
Just my iMac, its act kile avid card and it only happens access iCloud mail.
so I want to and need to go back to Loin

You can't unless you have a current backup of your old Lion system because the first thing you must do is erase the drive. It 's possible to use Target Disk Mode between your iMac and the MBP in order to clone the MBP to the iMac. However, that will still erase everything on the iMac's drive.
Or you could see about getting Yosemite to work correctly. If you have IMAP mail, then your mail should be intact.
Try these in order testing your system after each to see if it's back to normal:
1. a. Resetting your Mac's PRAM and NVRAM
    b. Intel-based Macs: Resetting the System Management Controller (SMC)
2. Restart the computer in Safe Mode, then restart again, normally. If this doesn't help, then:
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the Utilities menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
3. Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the Utilities menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu. Select Restart from the Apple menu.
4. Reinstall Yosemite: Reboot from the Recovery HD. Select Reinstall OS X from the Utilities menu, and click on the Continue button.
Download and install the 10.10.1 update.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
            because it is three times faster than wireless.
5. Reinstall Yosemite from Scratch:
Download and install the 10.10.1 update.
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
How to Clean Install OS X Yosemite
Note: You will need an active Internet connection. I suggest using Ethernet if possible
            because it is three times faster than wireless.

How can I delete videos and other things uploads to icloud ?

How can I delete videos and other things uploads to icloud ?

If these are purhased movies they are not stored in your iCloud account and cannot be deleted. They are stored in the iTunes store. What you are seeing are links to your previously purchased movies, allowing you to redownload them.
If you don't want to see these in the Videos app, go to Settings>iTunes & App Store and turn Videos off under Show All.

How do I delete a file using Xterminal?

Hi , recently in the interest of playing Doom thro my N900 - I copied 3 wad files thro xterminal to opt/doom/wads..
Now i guess this is occupying my root memory? do you know how i can delete the files using Xterminal. pls let me know
thx.

if it is in /opt, it shouldn't be!!
/opt is actually linked into /home
/home is a 2GIG partition on the EMMC that stores /opt (for optified packages.. all packages you download should sit in /opt) and all your settings / content (like address books and conversations)
To delete it using an x terminal, you really mean using a shell.. the shell is what you see inside the x terminal..
cd /opt/blah/dir
rm filename
rm is delete.. or more accurately remove!! It came in a time when keypresses were expensive
cp is copy
mv is move /rename
ls is list (as in dir)
df is diskspace free
du is diskspace used (as in by a file or directory)
there are loads of things like that
be careful.. rm is the easiest way to ruin a system!

My Mac Book Pro is giving me a message that the start up disk is full, how do I delete files, and what files should I be deleting

My Mac Book Pro is giving me a message that the start up disk is full, how do I delete files, and what files should I be deleting

There are several nice programs that can help you figure out what's on your computer - OmniDiskSweep, WhatSize, and DaisyDisk are the three I like. If you've had your computer for a while - and especially if this isn't your first Mac and you've been migrating from one computer to another, one of these programs can help you find files you didn't know your computer still had. For example, when I was trying to shed files to fit int a 256GB SSD, I discovered I had nearly 1GB of files in my Application Support folder belonging to programs I no longer used.
Other than that, your easy choice are music, video, and photos. They tend to be the big files. A movie will generally be at least 1.25GB, for example.

My daughter and i share an itunes account. how do i delete her and set her up with her own?

my daughter and i share an itunes account. how do i delete her and set her up with her own?

You need to make an iTunes Store account in her name and with her unique Apple ID. Note that everything she has purchased and downloaded under your Apple ID will not transfer to hers. She will need (or you will) to repurchase all of her iTunes Store items.
She will also need her own user account on the computer if you share the same computer.

I have apps from old work account that I can't remember the password to. On my personal phone those apps keep showing up but I can't update them because I can't remember the password. How can I delete them and download on my new account?

I have apps from old work account that I can't remember the password to. On my personal phone those apps keep showing up but I can't update them because I can't remember the password. How can I delete them and download on my new account?

Tap and hold an app until they all start jiggling and an X appears in the icon's top left corner. One by one tap the X to delete the app. when they are all gone you are free to buy them again with your own account.

How do I delete Yosemite and use previous?

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