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Old 06-14-2018, 01:49 AM   #1
a12333
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Deb9 livedvd - is ram fully clearing - error message


i'm using debian 9 livedvd (gnome) on my dvd-rom connected to my asus laptop. i know with dvd-rom malware can not write to the dvd's. using tor browser. i shut down by clicking the circular icon in the right hand corner of the browser where it shows 'wired' etc. i let it fully shut down after 60 seconds (computer will shut down in 60 seconds). i don't take any shortcuts to shutting down.

i have someone trying to hack my OS - i think they hacked it the other day and got on my computer. my concern is that they may have uploaded a script or something to the computer to prevent the computer from erasing the RAM fully after i shut down. this way if they were on my computer the other day (via hacking OS), then when i shut down, the RAM will not clean properly and then they are still on and don't have to go thru the effort to hack on since they are already on.

i am getting an error message when i shut down now. i don't know if i got this error message previously as the screen flashes very quickly during shutdown. i do not get an error message on startup - only green "ok's".

the error message says: "failed - unmounting/lib/live/mount/medium" ------------this is the only error message on shutdown.

what might cause this error message? does this mean the RAM is not fully clearing memory? If it is not clearing the memory, what do I need to do to my computer to get it fully clearing the RAM?

Last edited by a12333; 06-14-2018 at 01:55 AM.
 
Old 06-14-2018, 02:22 AM   #2
X-LFS-2010
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#1 yes and no and no

no one in interested in your computer, well mostly not

unless your using your credit card info on it (short of that you have no worries). your bank told you not to put this info in risky places and a "community made" (mostly german) OS with NO license and purchase qualifies as a "risk place" for your banking info

your idea about Linux looking clean upon startup and shutdown is COMPLETELY wrong. on some systems a flurry of the same such messages is shown and preferred by users and not hidden. it's unusual there is only one such message. it was quite an effort by free authors to "hide" the startup and shutdown messages - which you can see by using dmesg(1). "see manual page by using: 'man dmesg', at the shell prompt"

it takes 60 to shut it? no. about 5 maybe. the other 55 seconds is pure and simple waiting. why is some devices "lie" and say they are unmounted when actually they are still writing data. a "BAD" drive will report to OS it's unmounted, have a 8MB internal cache, and "finish" writing cache to disk after unmounting. for this reason Debian cannot reboot immediately: lying devices

I have a lying flash-card. it's light can stay lit 30 seconds or more after successful "umount". i'm %100 sure it gets corrupted file system if unplugged while writing despite it's having been unmounted - which breaks all unix rules.

now as to your umount it's likely it was never mounted, we do "umount -a", it's in the table of things to mount if possible", so you see a message "cannot umount" upon exit. it's not even an error.

Last edited by X-LFS-2010; 06-14-2018 at 02:27 AM.
 
Old 06-14-2018, 02:38 AM   #3
X-LFS-2010
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all of today's major devices/hardware and major OSes and modems (your cable box modem) are "super bugged". police or tech makers who made them can access them, employees of cable company can watch in a web browser what you do on the web

does that answer your "security" question?

no one cares who you are or if you browse porn or anything. they might want to steal your credit info but that's mostly a concern of your bank more than you: since if you use your credit card and anything is stolen charge you can contact your company and they likely will relieve the fake charge. the bank has an algorithm for preventing suspicious charges (ie, charges placed on the internet from a pc in a different geographic area than your own). if you've ever been "out of town" you may have got a call from your card company asking you if you've gone out of town and are using your card.

they could steal your WORK AND TIME. but since your using a free system your volunteering your time and code but there's so much free code on the internet one could choke on it. it's unlikely anyone would watch you to steal your work.

it is possible for germany to issue commands to your device to cause you to purchase more devices, blaming the device when actually they'd run a virus

infact they (Linux OS makers specifically ubuntu) do things that caused forced "internet upgrading", but as far as I see and know have not attacked hardware yet. perhaps if there were a war or their country was badly in debt and they needed to promote "ARM" cpu sales in a hurry: they might. they own most telephone companies you know.

just remember who you are trusting. your not even sure who and have no license - your running "free" code. Lastly if you run say "Microsoft" I can already tell you, at least you have a license but you can't trust them: infact they own part of that german company!! novell is one.

Last edited by X-LFS-2010; 06-14-2018 at 02:47 AM.
 
Old 06-14-2018, 02:52 AM   #4
X-LFS-2010
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my last employer (i'm not hired in the tech industry - just some local job) BUGGED the store and back office. they listened to what employees said but didn't keep it a tight secret they were doing so.

employees and users of big OSes have no rights in court. and try to take government workers to court you'll find the same - people laughing you think they are going to do law on your behalf.

it is a lawless world these days. it was not so just 30 years back.
 
Old 06-14-2018, 06:15 PM   #5
a12333
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Didn't answer my questions, but thanks just the same.

I am hoping someone can shed some light on what i specifically was asking. For instance, can something (ie: script) be uploaded to prevent the RAM from 'fully' clearing whereby malware could stay there? Someone I know is trying to hack me, plain and simply, and it has nothing to do with bank accounts, cc's, etc. I bought the dvd's pre-made from shoplinuxonline.com.

Looking forward to other comments.

Thanks.

Last edited by a12333; 06-14-2018 at 06:16 PM.
 
Old 06-15-2018, 01:34 AM   #6
AwesomeMachine
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When you boot off a live CD/DVD/USB, the entire system resides in ram. Ram is volatile storage, so when it loses power it loses its contents. The system doesn't need to 'clear' ram. It happens all by itself, as a function of the physical properties of ram memory.

If you purchased a DVD from a supplier, it is possible malware could be written to the DVD. But shoplinuxonline appears to be a pretty clean operation. Usually if your being hacked there is some evidence of it. If there is no evidence, then how can one really know he is being hacked?

Is there some reason you purchased a DVD rather than making one?
 
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Old 06-15-2018, 08:25 AM   #7
rtmistler
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This thread has been closed.

Discussions about someone hacking into your system are not appropriate for this forum. Please place questions of that nature in a non-technical forum.

Fellow members need not feed these details, nor add to this type of topic.
 
1 members found this post helpful.
  


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