![]()
The machine will recognize the non-corrupted external hard drives. I am trying to get the finder and applications back to normal. I shut it down completely thinking I would try to solve the problem today. #App to determine power consuming apps on macbook air mac#Immediately, the drive went into a "pulsing" mode and the i Mac began to act weird. Linc- I hope you are still here on this thread or can see it, and respond.įirst the machine in Question is an iMac 27" running 10.7.4.Ībout 3 days ago I hooked up an old external 2TB LaCie hard drive to check to see what was on that drive. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. #App to determine power consuming apps on macbook air how to#How to use and troubleshoot FireWire target disk modeģ. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth. The internal drive of the machine running in target mode will mount as an external drive on the other machine. Connect the two Macs with a FireWire or Thunderbolt cable. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode by holding down the key combination command-T at the startup chime. Boot into Recovery ( command-R at startup) or from a local Time Machine backup volume ( option key at startup.) Launch Disk Utility and follow the instructions in the support article linked below, under “Instructions for backing up to an external hard disk via Disk Utility.”Ģ. You need an external hard drive to hold the backup data.ġ. ![]() There are several ways to back up a Mac that is unable to fully boot. It won’t work with USB or PPPoE modems, or with networks that require any kind of authentication other than a WPA or WPA2 Personal password. Note: You need an always-on Ethernet or Wi-Fi connection to the Internet to use Recovery. For a walkthrough, see here:ĭon't import the Guest account, if it was enabled on the old system. That’s when you import the data from one of your backups. When you reboot, you'll be prompted to go through the initial setup process. #App to determine power consuming apps on macbook air password#If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade, so make a note of those before you begin. This operation will destroy all data on the volume, so you had be better be sure of your backups. You must be certain that you can restore everything to the state it's in now.īoot into Recovery, launch Disk Utility, and erase the startup volume. The backups can be made with Time Machine or with a cloning tool such as Disk Utility. If you like, you can try to erase and recreate the boot volume, but I don't know whether it will do any good.īack up all data to at least two different storage devices, if you haven't already done so. It's very likely that your boot drive is failing, or that you have some other hardware fault. ![]() Same problem(s)?Īfter testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. If you’ve forgotten the password, you will need to reset it before you begin. You must know your login password in order to log in. ![]() The login screen appears even if you usually log in automatically. Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs. *Note: If FileVault is enabled under OS X 10.7 or later, or if a firmware password is set, you can’t boot in safe mode. Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).The Shift key should be held as soon as possible after the startup tone, but not before the tone. Immediately after you hear the startup tone, hold the Shift key.The instructions provided by Apple are as follows: Boot in safe mode* and log in to the account with the problem. Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. The purpose of this exercise is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login. Don’t be disappointed when you find that nothing has changed after you complete it. Please read this whole message before doing anything.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |