Care to prevent writing to HDD while using USB Linux?

Discussion in 'all things UNIX' started by optigrab, Feb 29, 2012.

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  1. optigrab

    optigrab Registered Member

    Nov 6, 2002
    Brooklyn/NYC USA
    It's been a LONG time since I've posted, and this question(s) should be easy :rolleyes:

    I've been recently playing around with a wide variety of Linux distros, just a beginner trying to learn. So I've been creating bootable USBs and running a live Linux desktop from there.

    My question is: How safe is this for the O/S on the hard drive? That is, either through carelessness or ignorance, how significant is the risk that one might inadvertently write to / write over files (especially O/S system files) on the HDD? Is it overly-paranoid to remove the HDD as a precaution?

    (p.s. google didn't provide any answers, so I'm guessing this is pretty much a non-issue).

    Last edited: Feb 29, 2012
  2. mack_guy911

    mack_guy911 Registered Member

    Mar 21, 2007
    well linux dont do anything unless you tell him to do

    if you want to learn or install linux best use external disk drive creating a small partition and leaving rest for data backup in simple fat/ntfs

    in case it messup you dont mess with your original windows and fat/ntfs are readble by both on linux and windows so you can use it as data as well

    every OS get messup so if someone say linux dont its a lie best backup

    absolutely not you can do that but then you have to edit grub for windows which is easy as well

    best thing read and when you ready tell us then we give you babysteps about problems

    i recommended you do more reading before start and then ask about things you dont understand then start

    please read these all posts

    specialy gparted ones and tutorial given on mint forums see that its very detailed you get 80-90% idea

    also check this site lot of stuff to read before start
  3. lotuseclat79

    lotuseclat79 Registered Member

    Jun 16, 2005
    Hi optigrab,

    If you issue the mount command as a regular user, you should get confirmation that the Live USB you are using is mounted RO (read only), e.g. the Live USB I am using now is identified from the mount command as:
    /dev/sdf on /cdrom type iso9660 (ro,noatime)
    even though it is a Live USB and not a CDROM.

    You hard drives are not exposed to the Internet from a Live environment where it is confirmed that no hard drives are mounted, unless you mount them and deposit or withdraw information to/from them - and then, of course, unmount (umount command) them afterward in the Live environment.

    -- Tom
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