MBA Boot Failure


hello all!

having trouble getting mba (13" 2014) boot. looking little reassurance not hard drive failure, because there's important info has not been backed (i know, know...)

noticed system issues such sluggishness, failure load webpages , internet connectivity. mba automatically rebooted due system updates, not boot - progress bar stops in middle, , after 5 minutes, shut off.

have tried booting fresh osx install on external drive, , computer repeatedly boot , shut off, never loading past login screen.

worried information on ssd, because have been unable boot drive in target disk mode using other mac. when authenticate drive credentials, nothing happens , drive not mounted on desktop.

have run disk utility , verified/repaired drive, , saying drive ok - gives me hope. fsck says drive ok.

system not start in safe mode. diagnostic giving error code ppm002 - related system memory (ram?) issue?

hardware still under 1-yr warranty - planning on genius bar visit can. insight in meantime great!
 

it sounds can boot recovery partition (or internet recovery) if your'e able run disk utility.

being case, have access command line.

can use command line tools (tar or zip) archive files want. can use ftp upload them server somewhere.

(you might able mount external disk , copy files there i've never done that, i've used ftp before.)

can less stressed out data loss when genius bar...
 


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