Yimen Error Mac OS
Circle with a line through it
Learn what to do if your Mac starts up to a circle with a line through it (prohibitory symbol).
Download QuickTime Player 7 for Mac OS X v10.6.3 QuickTime Player 7 supports older media formats, such as QTVR, interactive QuickTime movies, and MIDI files. It also accepts QuickTime 7 Pro registration codes, which turn on QuickTime Pro functions. Make sure your Mac has a working internet connection, then: 1. Update Mac OS X. Open the App store and click on the Updates button. Install the updates. After, in any Office application go to the Help menu and choose Check for Updates to launch the AutoUpdate app. Let AutoUpdate install updates and then restart your Mac.
Question mark
Learn what to do if your Mac starts up to a question mark.
Options with a gear icon
Learn what to do if your Mac starts up to Options with a gear icon.
Blank (empty) screen
Learn what to do if your Mac starts up to a blank screen, such as an empty gray, black, or blue screen.
Apple logo
Learn what to do if your Mac starts up to an Apple logo or progress bar.
Globe with alert symbol
A globe with an exclamation point means that your Mac tried to start up from macOS Recovery over the Internet, but couldn't. Learn what to do if your Mac can't start up from macOS Recovery.
Lock icon
If your Mac is using a firmware password, the lock icon appears when you try to start up from another disk or volume, such as an external drive or macOS Recovery. Enter the firmware password to continue.
System lock PIN code
Your Mac asks for a PIN code when it has been remotely locked using Find My. Enter the four-digit or six-digit passcode to continue.
Login window
At the login window, enter your user account password to log in to your Mac. If FileVault is turned on, this also unlocks your disk. You might see a default desktop picture in the background, which might change to your chosen desktop picture when you select your account.
Thunderbolt, USB, or FireWire symbol
Yemen Error Mac Os X
A large Thunderbolt , USB , or FireWire symbol against a dark background means that your Mac is in target disk mode.
Learn more
- Learn what to do if your Mac displays a message that it restarted because of a problem.
- When starting up from Windows using Boot Camp, your Mac doesn't show an Apple logo or the other macOS screens in this article.
Yemen Error Mac Os Catalina
Oh no no no!
Zeroing out the disk may appear to fix the issues for a while, but I can guarantee that the issues are still there and will only get worse.
Once you see a bad sector on a hard disk, just one, it's time to backup your data and throw the disk away. If you don't want to junk the disk, at least use it only for data you don't care about losing.
You see, the way modern hard disks work is that they all have bad sectors. In the good old days, hard drives used to come with a printed list of known bad sectors and when you did a low level format on them (a real low-level format, not just zeroing out the data) you would then manually enter the list of known bad sectors, and then update that list with any new ones - in other words, you were in complete control over mapping out bad sectors.
With today's hard disks, the hard drive controller maps out bad sectors itself, without even telling you. It has a factory list of bad sectors, that you can't see. As it encounters bad sectors in normal use, it silently attempts to recover the data and move it to a chunk of spare sectors that all drives have for this purpose. You generally aren't aware that anything has happened. There will be a SMART status code logged, but OS X doesn't seem to regard this as an issue worth reporting. You can use something like smartmon tools to check the raw SMART status and see this for yourself.
Once a hard drive has mapped out enough bad sectors that it's starting to report to you there are bad sectors, this is the beginning of the end. I have not once had a hard drive last for a long period of time after reporting a bad sector, it always gets worse and worse.
The best thing you can do is to power down the drive immediately and let it cool down to room temperature. Get something to back up your data to and begin the backup process straight away.
Zeroing out the disk may let the drive remap a few more sectors and give you the illusion of having everything fixed, but it's a very different picture behind the scenes.