Make new MBP a carbon copy of old MBA

Hellishness

macrumors 65816
Original poster
Jan 27, 2010
1,086
0
Bay Area, CA
So I just got a new (to me) Macbook pro. I have a time machine backup of my old air on an external HDD. It looks like the easiest thing is to put it into recovery mode and restore it from the time machine backup, which would erase the MBP's disk and move all the old data over. But it says not to do that. Migration assistant seems like more of a PITA and I don't think that it'll delete all the current data. The MBP is on 10.8, and the MBA was on 10.7.4. Would it be easiest to wipe all it's current data, reinstall 10.8 as a new computer, and transfer it all at that time? Would I even be able to do that since I didn't purchase 10.8? I have the mountain lion .dmg on a HDD, but I'm not sure if that'll help.

TIA
 

Mal

macrumors 603
Jan 6, 2002
6,251
17
Orlando
Wipe, reinstall 10.8, then use Migration Assistant during the setup process to transfer your data. That way you have a clean system before you transfer, and then everything available afterwards.

jW
 

gentlefury

macrumors 68030
Jul 21, 2011
2,848
0
Los Angeles, CA
So I just got a new (to me) Macbook pro. I have a time machine backup of my old air on an external HDD. It looks like the easiest thing is to put it into recovery mode and restore it from the time machine backup, which would erase the MBP's disk and move all the old data over. But it says not to do that. Migration assistant seems like more of a PITA and I don't think that it'll delete all the current data. The MBP is on 10.8, and the MBA was on 10.7.4. Would it be easiest to wipe all it's current data, reinstall 10.8 as a new computer, and transfer it all at that time? Would I even be able to do that since I didn't purchase 10.8? I have the mountain lion .dmg on a HDD, but I'm not sure if that'll help.

TIA
I restored my rMBP from my MBA time machine backup and it works perfectly fine.
 

Hellishness

macrumors 65816
Original poster
Jan 27, 2010
1,086
0
Bay Area, CA
Do you know if 10.8 will give me any trouble when reinstalling it? I know I couldn't reinstall 10.7 on my air because I technically never bought it on my apple ID--I got the laptop with Lion on it. The guy I sold it to said he could take care of it no problem.
 

gentlefury

macrumors 68030
Jul 21, 2011
2,848
0
Los Angeles, CA
Do you know if 10.8 will give me any trouble when reinstalling it? I know I couldn't reinstall 10.7 on my air because I technically never bought it on my apple ID--I got the laptop with Lion on it. The guy I sold it to said he could take care of it no problem.
You have to log in to your apple id in order to install any OS. I don't think you have to if you are installing from a time machine tho, since the OS is on the disk.

When I sold my MBA I told the new owner they would have to go on the app store and pay for ML (it was already installed) if they ever need to re-install the OS.
 

Mal

macrumors 603
Jan 6, 2002
6,251
17
Orlando
So what happens if I have a disk image of 10.8 on an external HDD? Will that work?
If it's just a disk image sitting on an external hard drive, you can burn that to a disk or restore it onto a partition or USB flash drive and do the install. If it contains the full installer (and isn't just a recovery drive), then there's no requirement to enter an AppleID before install (it will prompt after, but that's not required either).

jW
 

Hellishness

macrumors 65816
Original poster
Jan 27, 2010
1,086
0
Bay Area, CA
If it's just a disk image sitting on an external hard drive, you can burn that to a disk or restore it onto a partition or USB flash drive and do the install. If it contains the full installer (and isn't just a recovery drive), then there's no requirement to enter an AppleID before install (it will prompt after, but that's not required either).

jW
I'm not sure what it is. it says "OS X 10.8 Mountain Lion.dmg" and is 4.35GB. How exactly would i go about wiping the current hard drive and reinstalling this?