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Option-Boot - firmware zaklenjen iMAC Late 2013, demo
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Stevie Jabuk

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Prispevek: #1   Objavljeno 15.02.2015 11:38:13
Option-Boot - firmware zaklenjen iMAC Late 2013, demo
Odgovori s citatom Dodaj uporabnika na seznam ignoriranih
Pozdravljeni,

čas je da še jz kej napišem oz. vprašam Smile lol, ko že dooolgo nisem, gre se za zadevo option-boot pri iMACu, ki sem ga kupil v Comshopu "Demo" iz police in do sedaj sem imel kot startup disk USB, zaradi SSD-ja, ampak, ker sem si še ubavil MacBook-a pred parim dnem sem ta SSD zmontiral v booka, frisno instaliral sistem Smile in cist pozabil, da nisem vrnil na iMACu startup disk na interni disk Smile, zdej je pa težava v tem, da je firmware zakljenjen na iMACu, ko hočem v recovery ali v boot option, klical sem EPL in mi odgovorili, da bo strošek 25eur za odklep in da ga morem tja dostavit, plus, da ga se iz CE pelem v LJ je 20+eur stroska Smile, a lahko kdo pomaga?

Uglavnem nobena komanda ne dela, samo "HASH" kodo lahko dobim v tem "zaklenjenem" načinu Smile

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GOGIBYTE, Nina Zalokar s. p.
Računalniške in tehnične storitve

Gogibyte.si
---------------------------------
S8+
---------------------------------
 History
---------------
 iPHONE 2g - 6s
 Macbook - Macbook Pro - Air - 2006 - 2015
 iPAD mini, iPad 3, iPAD Air
 iMAC late 2013
 MacBook Pro 13" RETINA, Late 2013
 iPHONE 7+ 128Gb
Stevie Jabuk

Stevie Jabuk

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Prispevek: #2   Objavljeno 15.02.2015 13:41:52
Re: Option-Boot - firmware zaklenjen iMAC Late 2013, demo
Odgovori s citatom Dodaj uporabnika na seznam ignoriranih
jaz bi probal po tem načinu;

Citiram:

Thats a MacBook Air though, the "change the amount of installed RAM and zap the PRAM/NVRAM" trick doesn't apply to them. They would need to visit an Apple Authorized Service Provider, who would then contact Apple to have the lock cleared.

With that said, that's definitely the EFI password screen. You can enable/disable it from the recovery partition, using the Firmware Password Utility found under the Utilities menu.

The problem though is that if you don't know the EFI password you can't hold "R" or use "option" when booting to get to the recovery partition. If you're comfortable using the Terminal you can use a few simple commands to tell your MacBook Air to boot to the recovery partition on only the next boot....

First you'll need to open Terminal and use diskutil to find the disk/volume for your recovery partition.
Code:
diskutil list
This should return a few lines similar to this example: (ignore the dots, they are only there to create filler space)
3: ....... Apple_Boot ....... Recovery HD ....... 650MB ....... disk0s3

In this example the Recovery partition is named "Recovery HD" and is located on disk identifier "disk0s3". Make a note of the name and disk identifier and move on.

Next you'll want to actually mount the Recovery partition, using the disk identifier you found above, in this example it is disk0s3.
Code:
diskutil mount disk0s3
You should now see your Recovery HD partition mounted on your Desktop or in Finder.

Now we'll tell the Mac to boot to the Recovery partition, which should allow you to go in and remove the EFI password. Again, in the example the partition name is Recovery HD but yours may be different.
Code:
sudo bless -mount /Volumes/Recovery\ HD -setboot -nextonly
The bless command is enabling the Recovery HD volume to be used as a boot drive, the setboot flag tells your Mac to use it as the startup volume and the nextonly flag tells your Mac to only apply this command for the next boot, subsequent boots will revert to the original startup disk. You'll be asked to enter your password, once you do so and hit enter the change will be made.

You can now shutdown your Mac, power it back on and it should boot directly to the Recovery partition, where you can find the Firmware Password utility under the Utilities menu in the menu bar.

Stevie Jabuk

Stevie Jabuk

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Prispevek: #3   Objavljeno 15.02.2015 16:20:58
Re: Option-Boot - firmware zaklenjen iMAC Late 2013, demo
Odgovori s citatom Dodaj uporabnika na seznam ignoriranih
Hvala za to, ampak to ne gre, ker ne morem do namizja, OSX je mrtev z narisano "mapo z vprašanjem" problem je, da ko sem spremenil Disk Startup na zunanji SSD ko sem ga imel, zdej ne najde vec notranjega in to me cudi, ker po defaultu, bi naj poiskal sam, kje ima boot.

miha99 je napisal/a:
jaz bi probal po tem načinu;

Citiram:

Thats a MacBook Air though, the "change the amount of installed RAM and zap the PRAM/NVRAM" trick doesn't apply to them. They would need to visit an Apple Authorized Service Provider, who would then contact Apple to have the lock cleared.

With that said, that's definitely the EFI password screen. You can enable/disable it from the recovery partition, using the Firmware Password Utility found under the Utilities menu.

The problem though is that if you don't know the EFI password you can't hold "R" or use "option" when booting to get to the recovery partition. If you're comfortable using the Terminal you can use a few simple commands to tell your MacBook Air to boot to the recovery partition on only the next boot....

First you'll need to open Terminal and use diskutil to find the disk/volume for your recovery partition.
Code:
diskutil list
This should return a few lines similar to this example: (ignore the dots, they are only there to create filler space)
3: ....... Apple_Boot ....... Recovery HD ....... 650MB ....... disk0s3

In this example the Recovery partition is named "Recovery HD" and is located on disk identifier "disk0s3". Make a note of the name and disk identifier and move on.

Next you'll want to actually mount the Recovery partition, using the disk identifier you found above, in this example it is disk0s3.
Code:
diskutil mount disk0s3
You should now see your Recovery HD partition mounted on your Desktop or in Finder.

Now we'll tell the Mac to boot to the Recovery partition, which should allow you to go in and remove the EFI password. Again, in the example the partition name is Recovery HD but yours may be different.
Code:
sudo bless -mount /Volumes/Recovery\ HD -setboot -nextonly
The bless command is enabling the Recovery HD volume to be used as a boot drive, the setboot flag tells your Mac to use it as the startup volume and the nextonly flag tells your Mac to only apply this command for the next boot, subsequent boots will revert to the original startup disk. You'll be asked to enter your password, once you do so and hit enter the change will be made.

You can now shutdown your Mac, power it back on and it should boot directly to the Recovery partition, where you can find the Firmware Password utility under the Utilities menu in the menu bar.


_________________
GOGIBYTE, Nina Zalokar s. p.
Računalniške in tehnične storitve

Gogibyte.si
---------------------------------
S8+
---------------------------------
 History
---------------
 iPHONE 2g - 6s
 Macbook - Macbook Pro - Air - 2006 - 2015
 iPAD mini, iPad 3, iPAD Air
 iMAC late 2013
 MacBook Pro 13" RETINA, Late 2013
 iPHONE 7+ 128Gb
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Prispevek: #4   Objavljeno 15.02.2015 19:11:26
Re: Option-Boot - firmware zaklenjen iMAC Late 2013, demo
Odgovori s citatom Dodaj uporabnika na seznam ignoriranih
A nič od tega ti ne prime?

http://support.apple.com/en-us/HT201255

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Get a life, get a Mac! ¯\_(ツ)_/¯
Stevie Jabuk

Stevie Jabuk

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Prispevek: #5   Objavljeno 16.02.2015 08:57:57
Re: Option-Boot - firmware zaklenjen iMAC Late 2013, demo
Odgovori s citatom Dodaj uporabnika na seznam ignoriranih
Ne vse te komande so zakljenjene, vse kar je prime OPTION, da ti prikaze "kljucavnico", nic zgleda, da bom pac moral odsteti 25eur, da mi odklenejo firmware, druga ne bo.

macata je napisal/a:
A nič od tega ti ne prime?

http://support.apple.com/en-us/HT201255


_________________
GOGIBYTE, Nina Zalokar s. p.
Računalniške in tehnične storitve

Gogibyte.si
---------------------------------
S8+
---------------------------------
 History
---------------
 iPHONE 2g - 6s
 Macbook - Macbook Pro - Air - 2006 - 2015
 iPAD mini, iPad 3, iPAD Air
 iMAC late 2013
 MacBook Pro 13" RETINA, Late 2013
 iPHONE 7+ 128Gb
Stevie Jobs

Stevie Jobs

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Prispevek: #6   Objavljeno 15.08.2015 15:30:18
Re: Option-Boot - firmware zaklenjen iMAC Late 2013, demo
Odgovori s citatom Dodaj uporabnika na seznam ignoriranih
Naj osvežim temo. Imam problem podoben, zgleda je zaklenjen firmware, pri zagonu če pritisnem comand +r se ključavnica nariše, ni možno nič narediti. Imam prednost le to, da mi mac dela, ko sem ga kupil je prodajalec natipkal kodo in sem uspel naložit svoj beckup. Zdaj bi pa želel še windowse gor dobit in mi ne rata ker je zaklenjen. Rad bi poskusil najprej sam kaj rešit oz. odstranit pasword. drugače bom pa moral nekako dobit prodajalca

Brskal sem po netu, zasledil sem da ga moram spravit v recovery mode z tipko comand + r in nato v opravilni vrstici bi se naj ponudila opcija vgasnat password vendar jaz ne pridem nikamor saj mi takoj ključavnico nariše ob pritisku comand+r.

Mogoče kakšna rešitev?

Naprava je Macbook pro retina 15, late 2012

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Prispevek: #7   Objavljeno 15.08.2015 17:24:39
Re: Option-Boot - firmware zaklenjen iMAC Late 2013, demo
Odgovori s citatom Dodaj uporabnika na seznam ignoriranih
Zakaj sploh take "zaklenjene" kupujete? Na licu mesta pred nakupom morajo odklenit al karkoli pac. Nazaj na tovarniske nastavitve celotnega racunalnika.
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Prispevek: #8   Objavljeno 15.08.2015 18:11:00
Re: Option-Boot - firmware zaklenjen iMAC Late 2013, demo
Odgovori s citatom Dodaj uporabnika na seznam ignoriranih
Rešitve nisem našel, tko da sem nekako dobil prodajalca in geslo natipkal in ugasnil, tko da je zdaj mir. Ne vem pa če se sploh da ta zadeva odstranit na kakršen koli drug način.

Drugače, če sam ne probaš naložit pred nakupom ne moreš niti vedet, saj prodajalec lahko postavi sistem na novo in ti pasword ne odstrani( sistem in paswoord sta neodvisna). Dokler ne boš na novo mac os nalagal ali svoj backup ti tega gesla ne bo iskal....

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Prispevek: #9   Objavljeno 19.08.2015 20:42:18
Re: Option-Boot - firmware zaklenjen iMAC Late 2013, demo
Odgovori s citatom Dodaj uporabnika na seznam ignoriranih
Pri starejši Macih je delovala 3. točka iz spodnje strani:
http://osxdaily.com/2015/01/28/forgot-mac-firmware-password-what-now/

Oziroma tole:
http://osxdaily.com/2009/10/19/bypass-mac-firmware-password/

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