Why can I access files using ubuntu live cd but not my mac?

Question

Hello,
Every since I have upgraded to Lion then to Mountain Lion I have had nothing but trouble with my mac crashing and not being able to repair the harddrive. I use time machine with an external hard drive to back up everything (also using online server to back up things as well).
My issue is that disk utility never works ( ever ) and when I have trouble the hard drive and my external hard drive always show up grayed out and disk utility says the disk is broken and cannot be repaired. Which the disk are fine because I can access them using a ubuntu live cd no problem.
My main question is how is this not being addressed by apple? This is clearly a bug - there is nothing wrong with my external harddrive or my macs hardrive - yet when I restart my mac I fear it will never start again(in its current state) and the disk utility just doesn't work the only answers I ever get is the hard drive is bad (which is not the case being I can access it with the ubuntu - or even reinstall everything and it works fine etc...)
There is some major bugs and I can say I never had these problems losing my data with a windows machine (though I am not a big windows fan). Apple why doesn't the disk utility work?
Also why when I update my mac and the mac restarts itself does it not eject my external hardrive - also why if you don't eject the harddrive it ruins the data on the hard drive or at least makes it grayed out or corrupt in my mac - but I can copy the files in ubuntu and put them back then it works just fine? These are serious issues and I am really shocked that the mac community would stand for this kind of thing - I am not the only one with these issues I see thousands of others with the same issues so when are they going to be fixed?
If what I am saying is unclear - just google mac hardrive cannot be repaired - and set the time for the last month you will see. Also to those who have these troubles simply use a ubuntu live cd - copy all your files to the home folder then place them back to where the reside and mac will reconize them again - worked every time for me so far no thanks to disk utility.

Answer 1

Your booting off a Ubuntu disk which has it's own operating system on it and on another medium that is free of issues, unlike your current hard drive running OS X 10.8.
I really don't advise you directly installing Linux on a Mac as it's much more complicated that it appears. Also I don't advise you using Linux anything to tinker with a Mac unless you really really know what your doing.
Since your Mac's software is broken you don't know currently and shouldn't be using Linux as a band-aid solution to your problem.
My suggestion is you FIX your primary boot drive.
disk utility says the disk is broken and cannot be repaired
This calls for a complete zero erase and install of the affected area, if it's just the Macintosh HD partition then fine, it's a hold command r boot into Recovery HD and use Disk Utiltiy there to Erase with the middle secure erase feature (important) and then a reinstall of OS X 10.8 from Apple's servers over a fast Ethernet connection.
If your GUID partition table or Recovery HD is affected, then you need to command option r boot into Internet Recovery and select the entire hard drive for the same zero/middle erase proceedure, unless you have a older MacBook Pro then you need to use option key boot off the 10.6 disks and use the Secure Erase/ Zero on the entire drive, install 10.6, then update to 10.6.8, then AppStore upgrade to 10.8 again.
You need to only restore user files into same named accounts from a Storage Drive backup, do not use Migration or Setup assistant as your TimeMachine drive data is likely corrupted. This means all new softwre installs from original sources as well.
Read through my many User Tips, you'll be fixing your own machine in no time.
https://discussions.apple.com/community/notebooks/macbook_pro?view=documents#/?p er_page=50
also why if you don't eject the harddrive it ruins the data on the hard drive or at least makes it grayed out or corrupt in my mac
Windows and Linux also has to "safely remove hardware" or "unmount" before ejecting a drive as well or it corrupts the data.
I guess this feature came about so one can disconnect a drive without having to physically remove it and wear out the ports doing so.