Assistance required after you download Sierra - locked in a spiral of failure of the Installation

Hello - I am a student of the University who made the mistake of thinking I had to upgrade my OS system after seeing some updates new flashy in the Sierra. Long story short, that my computer is locked into a cycle where I restarts and the installation process will begin installation but end abruptly and ask me to reboot again.

I have exams and papers due and seriously want access to my data again. I don't have a back up of my files. As such, I am looking for a method that will allow me access to my files that I need to be able to read notes, print etc.

Details: I have an old MBPro by the end of 2011. He was on as the primary OS x Lion. I had updated some time later. More recently, I got El Capitan and it worked very well. I downloaded Sierra in the background as I did work at home and after installing it, it asked me to reboot. This was the point that I was able to come back from. Reboot after installation scenario is as follows:

-A progress bar comes up saying 34 minutes until completion

-The progress bar goes to 33 minutes until completion

-Beginning of fans of my computer acting upward and the bar stops and crashes of progression

-The installation process says he doesn't have and asks me to restart my computer

Specifically, I get the message 'Mac OS could not be installed on your computer. File system check or repair a failure. Quit the installer to restart your computer and try again. »

When I quit the installer of the OS, I am taken to the startup disk option and asked to choose a system to reboot my computer with. I see 'Macintosh HD macOS 10.11.4' but when I click on it and try to restart I get the following error message, "you cannot change the disk on the disk selected. Startup disk could not gather enough information on the selected disk. »

Things I've tried:

Internet recovery mode: I went here to do a restore of the Mac OS x comes with my computer (Lion). This attempt fails and the computer tells me I can't downgrade because a more recent OSX is already on my computer...

Recovery mode: I tried to come back just El Capitan from here. When I try to do the process will take literally one second before I get a notification saying: "an error occurred during the preparation of the installation. Try to rerun this application".

Disk utility: I tried to do first aid and repair on this menu on the big disk image (since some of them pop up... I'm sure that the big one is my computer and the small setup of Sierra is?). I see that I 115Gigs franco 319Gigs departure. When I click on check and repair, the process takes some time and seems as he goes to halfway through before I get errors in the two. Repair error wonder backup my data.

-some specific stuff; the journal for the repair of first aid says something like: the Macintosh HD volume could not be completely checked. File system check exit code is 8. Update support partition for the volume as required. File system check or repair a failure. Operation failed... »

Safe mode: I can't start in safe mode. My computer will load the apple logo, progress on 3/4ths of the way start-up and then crash on its own and not restart.

Things I have tried:

Constituting a new boot USB of OS Sierra - I read that in so doing I can substitute the installation process that is going on right now on my computer and start a new... I hope one that works. I was not able to do this again, because I need someone to another macbook to make it and none of my friends won't let me touch their computers after the fiasco that happened on mine... Can I get some feedback on this?

Backup: I don't have an external hard drive... I'm willing to buy one if necessary, but I don't know how to make a backup in a world where I don't have access to the major functional sections of my computer. Also, if my computer is * session here now, I'm worried that a backup will be essentially a * a backup... is this the work of the computer?

Other thoughts:

-my computer was working fine before I tried the upgrade... no complaints on my end, it was a real trooper

-Maybe the download was corrupted?

-I learned today that the operating system installation process requires internet connection - maybe that my internet connection is bad?

-on that note, I want to say I tried a lot of different things. Been in different parts of the campus (different parts of my dorm building, IT support across campus, etc.). My University has also 3 options of WIFI, but each requires a separate verification process. Throughout this process, I have been connected to one of these methods. Switching may help? But, if I can't do the verification step (i.e. open a browser and type in the details of my student specific to actually use the web), I do not think that this will help you a lot. In addition, I am sure that I am already using one of the less frequently used options.

I want to avoid a permanent possible deletion because there are important things on my computer.

Any advice? Enjoy it!

Same problem here on my Mac Mini end of 2012. I couldn't find any fix so far. The machine worked perfectly fine before with El Capitan and had about 50 GB of available disk space. I have use any version beta of Sierra, but officially released one that came yesterday. Really disappointing to see the new system operating software with fundamental questions and no good way to solve it.

Any help really appreciated.

Tags: Mac OS & System Software

Similar Questions

Maybe you are looking for

  • My Tbird mail file went suddenly from 1.5 to 10 GIG, how to fix?

    I'm short on osx5 with an older version of you bird. Everything was going well for many yearsand a month ago, the file of the mailbox that I save went from 1.5 gig (logicSince I'm important material saved from several accounts in several files) tomor

  • Unknown material? In Windows XP

    Laptop: HP 9812eo OS: Windows XP downgrade Hello This question has probably been asked many and I consider myself quite an experienced modern PC user, but I'm stumped! After downgrading my vista PC wife (I like vista, but the woman is not so eager to

  • How do my network controller drivers?

    My controller device... I need a pilot plsss...Hardware IDPCI\VEN_10EC & DEV_B723 & SUBSYS_2231103C & REV_00PCI\VEN_10EC & DEV_B723 & SUBSYS_2231103CPCI\VEN_10EC & DEV_B733 & CC_028000PCI\VEN_10EC & DEV_B723 & CC_0280Tanx

  • Photosmart C7280 - Double-sided printing from Office 2011.

    I just switched to a MacBook Pro, Mac OS 10.8.2, running and have installed Office 2011. While I can print double-sided of my web browser and when printing PDF files, there is no option to print double-sided when direct printing from Word. Can advise

  • Folder of Email of indexing and ranking blackBerry Smartphones

    The main reason I stayed with a Blackberry is because of the ease of filing of messages. Read the email, tap the message file option and start typing the folder where the message goes (if it has not already guessed) and voila, filed message. I tried