Please help!!! I updated my software and now it does nothing. Can’t sign in. Nothing. Black & white type flashes on the left screen with a bunch of code talk and it just wont take me further. Have tried to get in 30 times. I have no back up done. Every picture of my children since birth- gone!? Want to cry.
As Barney-15E said, chances are you haven't wiped anything.
Your Mac is showing the black and white type because something went wrong with the install.
Trying restarting and hold down the shift key, this will boot into a 'safe' mode - does this work?
If it does or doesn't, please report back.
You don't say what Mac you have but if you are installing High Sierra, then your Mac will have a 'recovery partition' that you can boot into.
This will allow you to try and repair the computer, or reinstall the operating system.
To do this, restart the computer and hold down the OPTION key during boot and choose the “Recovery” option, or Hold down Command+R keys during boot to access the Recovery HD partition.
Full info is here
https://support.apple.com/en-gb/ht201314
Once you've done this you need to select disk utility and try to repair the disk.
If that fails you have the option to reinstall the OS, this just installs the OS over your current install. It doesn't delete any of your data.
A word of advice, if you have very important data (such as photos) on your Mac, you need to understand and invest in a backup solution such as Time Machine which is built in to you Mac.
How to use Time Machine to back up or restore your Mac - Apple Support
If you're really unsure of any of this, take it to an Apple Store.
As Barney-15E said, chances are you haven't wiped anything.
Your Mac is showing the black and white type because something went wrong with the install.
Trying restarting and hold down the shift key, this will boot into a 'safe' mode - does this work?
If it does or doesn't, please report back.
You don't say what Mac you have but if you are installing High Sierra, then your Mac will have a 'recovery partition' that you can boot into.
This will allow you to try and repair the computer, or reinstall the operating system.
To do this, restart the computer and hold down the OPTION key during boot and choose the “Recovery” option, or Hold down Command+R keys during boot to access the Recovery HD partition.
Full info is here
https://support.apple.com/en-gb/ht201314
Once you've done this you need to select disk utility and try to repair the disk.
If that fails you have the option to reinstall the OS, this just installs the OS over your current install. It doesn't delete any of your data.
A word of advice, if you have very important data (such as photos) on your Mac, you need to understand and invest in a backup solution such as Time Machine which is built in to you Mac.
How to use Time Machine to back up or restore your Mac - Apple Support
If you're really unsure of any of this, take it to an Apple Store.
It most likely isn't "wiped."
When you reboot, try holding down the shift key until you see the Apple screen with the progress bar.
It will try to boot into Safe Mode. https://support.apple.com/kb/ht1455
If you can successfully boot into Safe Mode, you have previously installed some crapware that doesn't work with High Sierra and prevents you from booting normally.
Either way, post back with the results of attempting Safe Mode boot.
You can also try booting into Recovery and run First Aid on the disk. If it finds any errors, run it again (even if it says it repaired something). About macOS Recovery - Apple Support
I do not have mac operating system disc. Why should I lose all just by trying to install free software from apple?
Ever heard of making a backup before installing any system software?
Updated software & my entire computer is wiped
