Previous 1 6 7 8 9 10 Next 143 Replies Latest reply: Mar 15, 2010 3:17 PM by Jman5112 Go to original post
  • RADumas Level 2 Level 2 (295 points)
    backed everything up
    ran disk utilities: got the all clear
    not using PGP anything
    got the error
    did the disk partition jiggle dance
    still get the error
  • ManuP Level 1 Level 1 (5 points)
    So, after the TM backup, I tried your partition thing but ... unfortunately, it doesn't work for me. I'm a bit stuck as I have no time soon to reformat and re-install.
    Frustrating as I have never changed anything to default installs.
    Thanks a lot for your time, William.
  • ManuP Level 1 Level 1 (5 points)
    Mike Boreham wrote:
    ManuP wrote:


    Same problem on a MBP without PGP installed. Apple Support advises me to reformat and make a fresh install but I would prefer to avoid re-installing all softwares.


    No need to reinstall all the softwares......erase......install......import everything from Time Machine or a clone........ gives same end result as upgrade install, but has more waiting around time during the import.

    Worked perfectly for me.


    Could you develop a bit, William ?
    So, what you mean is that from my Time Machine backup, I would be able to restore all softwares without having to re-install those ? Will it then restore it with the required libraries, etc. ?

    Thanks a lot for your help.
  • RADumas Level 2 Level 2 (295 points)
    I read in a forum that there has to be 128MB of free space AFTER the volume that is being updated.
    So... I backed everything up
    Deleted the startup volume and resized it to allow for 128MB free space after
    Tried clean installing on that fresh volume, and no love.
  • RADumas Level 2 Level 2 (295 points)
    caution: if you install a new OS and then restore from Time Machine, you will be restoring a copy of the volume as it was previous to the new OS, essentially backgrading.
  • ManuP Level 1 Level 1 (5 points)
    RADumas wrote:
    caution: if you install a new OS and then restore from Time Machine, you will be restoring a copy of the volume as it was previous to the new OS, essentially backgrading.


    But am I able to restore only my data and my softwares (taking the restore from the user folder ?)
    Thank for your warning.
  • RADumas Level 2 Level 2 (295 points)
    you can easily restore the user folders

    The applications are another matter, because they install various files in the library and /usr/ directory, not to mention various prefs files and panes. You might not be able to restore all your apps and have to reinstall from startup drive. That's a tricky business.
  • Mike Boreham Level 4 Level 4 (2,095 points)
    ManuP wrote:
    Mike Boreham wrote:
    ManuP wrote:


    Same problem on a MBP without PGP installed. Apple Support advises me to reformat and make a fresh install but I would prefer to avoid re-installing all softwares.


    No need to reinstall all the softwares......erase......install......import everything from Time Machine or a clone........ gives same end result as upgrade install, but has more waiting around time during the import.

    Worked perfectly for me.


    Could you develop a bit, William ?
    So, what you mean is that from my Time Machine backup, I would be able to restore all softwares without having to re-install those ? Will it then restore it with the required libraries, etc. ?

    Thanks a lot for your help.



    I think you probably meant to ask me (Mike) who made the restore from TM suggestion.

    Yes you can restore absolutely everything from TM (or a clone) at the end of an erase install. Apps data settings serial numbers. It is just like an upgrade install. It WON'T import incompatible software, like the upgrade option which discards it.

    The end result is like an upgrade install, but it takes longer, and it gets round the yellow triangle can't install problem.
  • ManuP Level 1 Level 1 (5 points)
    Mike Boreham wrote:

    I think you probably meant to ask me (Mike) who made the restore from TM suggestion.

    Yes you can restore absolutely everything from TM (or a clone) at the end of an erase install. Apps data settings serial numbers. It is just like an upgrade install. It WON'T import incompatible software, like the upgrade option which discards it.

    The end result is like an upgrade install, but it takes longer, and it gets round the yellow triangle can't install problem.


    Oops, sorry, Mike !

    OK, seems a decent workaround if I haven't to re-install all softwares installed previously.

    Thanks for your assistance, Mike.
  • Mike Boreham Level 4 Level 4 (2,095 points)
    ManuP wrote:

    OK, seems a decent workaround if I haven't to re-install all softwares installed previously.


    It's how I did mine when I hit the yellow triangle problem.
  • ManuP Level 1 Level 1 (5 points)
    Mike Boreham wrote:

    It's how I did mine when I hit the yellow triangle problem.


    It worked perfectly. Thanks a lot, Mike.
    Erased the former Macintosh HD partition
    Created a new one
    Fresh install of Snow Leopard
    Connected to Time Capsule with last Time backup (direct Ethernet connexion)
    Imported when asked on Snow Leopard startup from last Time Machine backup

    And, with the exception off now being on Snow Leopard, everything is like before (apps, users, data, network, keychain, etc.) !
  • quinniusmaximus Level 1 Level 1 (0 points)
    I've had install issues as well. My MacPro is partitioned to run os X and fedora 11. Nearly everything I did for the original install of os X would not let me upgrade.
    I finally CCC'd (carbon copy cloned) to another partition and then my Snow Leopard upgrade would allow the install. Previously I kept getting the error that I could not install as my machine could not boot up from that drive/os (though I had been).
    Once the upgrade was finished I erased my original install of 10.5.8 and CCC'd it to the original partition.
    So far all has started up well. I do see an error every time I open terminal about a dynlib.dl or something like that...
    I'll be investigating that next.
  • RADumas Level 2 Level 2 (295 points)
    Ok finally working after deleting and re-creating startup volume, restoring from backup, and installing 10.6. A process that took many many hours.

    Now, My mysql is dead in the water. Not sure what other apps have been smashed.

    The most problematic OS upgrade ever (and I mean since System7)
  • R C-R Level 6 Level 6 (16,565 points)
    TampaNewbMacUser,

    You appear to have a 500 GB drive formatted with the MBR (Master Boot Record) partition scheme in your MacBook Pro 17" model. Snow Leopard requires the GUID Partition Table (GPT) scheme, which is why you are (correctly) getting the "can't boot" message.

    From your listed "Hardware Overview" info, I am guessing you have the original MacBook Pro (17-inch), have replaced the original smaller drive with the 500 GB Western Digital one, & probably never formatted it with the GPT scheme. I'm not sure how you got Leopard installed on it -- maybe you cloned it from the original drive?

    Anyway, among other things, you can't use Disk Utility to resize a partition on a MBR schemed drive on the fly, so unless you want to buy a utility that can change the partition scheme on-the-fly (which is risky enough that even the vendors of such products recommend that you backup everything beforehand to be safe), you will need to not just erase the current partition but reformat the drive with the GPT scheme using Disk Utility's "Partition" tab.

    Obviously, this erases everything, so make sure you have a backup of at least your user documents before doing this!
  • R C-R Level 6 Level 6 (16,565 points)
    Ron Khile,

    The info you provided shows a "suspicious MBR at sector 0." That is almost certainly because for the GPT partition scheme, the contents of sector 0 should be identified as "PMBR" -- the protective MBR "wrapper" that prevents utilities that don't understand EFI or GPT requirements from accidentally hosing GPT disks.

    My guess is you have used some non-Apple supplied disk utility that forcibly modified sector 0 in some way that it no longer can be identified as a protective MBR. I don't know if this actually would prevent your Mac from booting using the EFI boot loader & thus render it incapable of booting into Snow Leopard or not, but it would explain the "can't boot" message.
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