Why cant boot my hard drive inside mac ? but i can boot it externally ( with sata usb )

like 2 weeks ago my hard drive didnt start normally ... so i get borrow a sata usb and a 80GB drive... then i install and boot from inside
the 80GB drive , and from outside i install ML to my 500GB hard drive ( my macbook pro is mid 2012 13'' ) then i can use my 500GB hard
drive from outside, but when i put it inside , mac cant find hard drive , but i can use 80GB drive inside and no problem ....and the 500GB drive
outside and no problem.....
what is happening ?

From the Safari menu bar, select
Help ▹ Installed Plug-ins
Besides the following, what plugins are listed?
iPhotoPhotocast
Java
QuickTime
Shockwave Flash
WebKit built-in PDF

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Or if you purchased Pages as part of iWork on a disk, reinstall from the same disk.
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Yes, you can partition your 2TB drive that way. In fact, I have an external hard drive with 3 partitions: one for a SuperDuper! clone of my Snow Leopard partition, one to clone my Lion partition, and one larger partition for Time Machine (which only backs up the Lion partition).
I would expect the authorized reseller to have a complete set of OS X disks.

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Vijay Raymond Daniel wrote:
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I have to admit that the lack of response is somewhat frustrating...

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I opened up Safari for the first time in a long time and it asked to update my keychains. I did. Then after I restarted my mac everything went back to default and I can't find anything I had saved. All music, pictures, gone!
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Hi inergi, Welcome to Apple Discussions.
Did you attempt to rename your home folder? If not, WhatSizemay help you find it.
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[email protected]

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how to install hard drive into mac pro

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For one, should I partition the drive?
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When I power up my Mac-Pro I only get a flashing file folder with a ? inside the folder. I suspect my hard drive is maxed to capacity can anyone help me as to what I should do?

Whatever the problem is you no longer have a bootable system. You need to try reinstalling OS X.
Reinstall Snow Leopard without erasing the drive
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
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2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install Mac OS X 10.6.8 Update Combo v1.1.
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Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
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Your rushing and not making much sense.
Your machine was running like garbage, so you tried to reinstall 10.8---did you do this or not?
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But when you boot it keeps booting Recovery HD, so perhaps the firmware has made a mistake, it can forget.
You held the option key down to boot into Startup Manager, why didn't you select OS X for the boot volume?
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Why is my computer slow?
Step by Step to fix your Mac
https://discussions.apple.com/community/notebooks/macbook_pro?view=documents#/?p er_page=50

Using Current Windows-based External Hard drive on Mac

Hello,
I have a MacBook Pro now. I have BootCamp installed with Windows Vista. Working fine. I also have a Western Digital 160 GB external harddrive with data on it from my old Windows only computer. In other words, it is formatted with NFTS.
I want to be able to do one of the following things:
1. Partition the external drive in half so I can use half of it for new Mac data while keeping my old Windows data
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Thanks.

You won't likely be able to make one hard drive with two different partition types if it is already partitioned (partly anyway) in Windows in NTFS. Mac Disk Utility won't deal with the unpartitioned space AFAIK.
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Anything but My Book is the answer (I have seen at least a dozen My Book complaints here) - normally with macs there are a few trusted makers and one interface - firewire (NOT USB). I use LaCie drives - 3000GB worth - and for portable I have an OWC, they make very high quality cases and drives and nice and small.
I have a few others that I do not rely on like a 320GB USB drive that was $100 and the drive inside is worth more than the whole external drive actually cost which is why I bought it. And a small USB Maxtor for use with Parallels since Parallels won't see Firewire drives.

Installing XP SP2 PC hard drive in Mac

What I want to do is take the hard drive out of my PC which is already formatted with Windows XP SP2 and put it in my Mac Pro as a second bootable drive. Assume that my drive is a SATA drive (I need to check first) that is installable in the Mac. Can I do this and how without running Boot Camp to reformat the drive and going through the full Boot Camp partitioning procedure? If so, how can I just create the Mac drivers disk?
Thank you,
i-convert

You will probably need to use Windows Recovery console or repair booting from XP SP2 - as long as it is not an OEM/Dell/HP type machine specific copy.
What you might want to look into before trying to boot from your Windows SATA drive is first download and use WinClone www.twocanoes.com to backup the partition while in OS X, just in case.
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You might also consider running XP in a VM like Parallels unless you play games and need native boot.
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I have an external Harddiskdrive with 200 GB formatted in HFS+ with my Mac.
And here's my Problem:
A friend of me would have some of the MP3's on this HDD, but he is a PC user with Windows XP. So he could not see the drive in his Workspace.
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Or is there a App like MacDrive as Freeware or OpenSource???
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"am getting this error message on my Mac:
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This is not an error. SMART status reports of hard drives are not passed through the chipsets of external enclosures.
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FAT is not a program. IT's the format in which the drive is fomatted.
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Hello,
I recently bought a Toshiba Hard-Drive with the following features:
500GB
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It is USB 3.0 and 2.0 portable hard drive
It has already been formatted NTFS for Windows XP, Vista, 7, and 8
The box says that it can be reformatted for Mac
I have a Macbook Pro with Retina Display that I bought this year in late March/early April.
It runs OS X Mavericks, and Parallels Desktop 9 for Mac.
I would like to reformat it so that I can use it on my laptop both with Windows and Mac OS at the same time. I do not wish to use a partition as I want to access the hard drive through Mac and Windows at the same time on my laptop and I also want to be able to access the Mac things on a Windows computer and vice versa.
I have never formatted a hard drive before, and I would like to use a completely safe software, or no software at all, if it is possible.
I am sorry but I don't have a very high knowledge of this.
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Good luck,
Clinton

Why cant boot my hard drive inside mac ? but i can boot it externally ( with sata usb )

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