The GUI resembled a blend of Mac OS 8s Platinum appearance with OPENSTEPs NeXT-based interface.If youre looking to store 2 TB of data or less, an SSD offers tremendous value, boasting high speed, small size, and long lifespan. Macintosh OS X Server 1.0 1.2v3 depended on Rhapsody, a half and half of OPENSTEP from NeXT Computer and Mac OS 8.5.1. The principal variant of Mac OS X was Mac OS X High Sierra 10.13. Mac OS High Sierra 10.13 ISO / DMG file Direct Download.
Preparing For High Sierra Update Further ThanNow it wont update further than High Sierra.“Before you return your Mac to us, be sure to enable FileVault and back up your data. If an unapproved extension tries to load, the extension is blocked and displays a user alert.The newest beta version of macOS 11 is Mac OS 11.2 beta 4 released to beta testers on March 2nd, 2021. This security feature only allows kernel extensions to load on a system that is already approved by the user. High Sierra (10.13) or higher includes a security feature that requires users to approve new third-party kernel extensions. Apple’s advice is brief, but makes the two most important points:macOS. This article explains what you should do – when possible – before your Mac goes for service or repair, so that when it returns you can get up and running as quickly as possible.That way, there’s nothing else to go missing.When your Mac returns, connect it to a minimum of essential peripherals and try starting it up normally. I generally avoid sending any cables, input devices, or anything else when the work is to be done on the Mac itself. Shut your Mac down using the Apple menu command, if you can.Pack your Mac carefully using its original packaging, if possible, and take or send it to Apple or Apple’s Authorised Service Provider.You can set macOS up as a new user, and migrate using Migration Assistant afterwards, or migrate manually if you really want to.Whichever you choose, you’ll want to ensure that your Time Machine backup or clone is connected by the fastest possible method, such as Thunderbolt 3, to make the process as rapid as possible.A lot of users seem worried about trying to do any of this on a Mac with a T2 chip. Remember to use the Startup Security Utility in Recovery Mode to allow this for a Mac with a T2 chip, if you want that option. Whatever happens, you can choose a bootable external clone as your startup disk, and use Carbon Copy Cloner or SuperDuper to clone that back to your internal storage. If your Mac boots into setting up macOS, you can follow the setup, and opt to migrate from the external clone or your Time Machine backup. If almost everything on your boot volume has vanished, you know that its internal storage has been wiped or replaced.If your Mac has a T2 chip and you want to use a bootable clone to restore its contents, now is the time to open Startup Security Utility and enable it to boot from an external drive (see below).If you need to restore your Mac’s internal storage, you now have a choice of routes for that journey, which include: All you do need to do is enable your Mac to boot from an external disk, something which is by default disabled on T2 models.If you do allow a T2 Mac to boot from an external disk, don’t forget to restart in Recovery Mode, open Startup Security Utility, and return its settings to normal, once you’re happy that your migration is complete and your Mac boots properly from its internal storage.Yes and no. So long as you’re using a current version of the cloning tool, you don’t have to turn Secure Boot off at all. Try this on an older model with a well-loaded SSD, and it could be many hours before the volume is encrypted.The only real complication with a T2 is when it comes to letting it boot from an external disk, if that is how you have decided to restore your internal storage when the Mac returns. The first is that much sensitive data is covered by data protection legislation, and you as the custodian of that data are expected to take reasonable precautions to prevent its inadvertent disclosure. Thus you couldn’t trust such cloning to have been performed correctly, and it would offer no real improvement to the user.I think that you’re going way over the top here.There are two related issues. It is also impossible to make such a process error-free, and the merest chance of someone else getting all your files by mistake wouldn’t be good.As it is, to protect the privacy of what is on your internal storage, Apple recommends that it is encrypted, which in turn makes it impossible to verify that a disk has been properly restored and is fully functional. No matter how careful Apple and its providers may be, that puts a great deal of trust in technicians never being tempted to access sensitive data. The broken logic board goes back to a factory where it is tested for faults, any possible repairs are made to it, and it may then return as a remanufactured logic board for use in a future repair. They simply don’t have the opportunity, nor would they bother with a MacBook Pro, say, from a regular user.If your internal storage is removed as part of (e.g.) replacing the logic board, then Apple does have standard procedures for ensuring that data stored on it are cleaned, as far as I am aware. There’s no risk that they will try to crack your encryption – especially with T2 FileVault, which as far as I know has never been cracked – nor to put it into a forensic rig and start trying to recover deleted files. If you leave sensitive data in plain view on your internal storage, there is always the small risk that a technician might be tempted to steal it. Service providers take measures to try to ensure that this doesn’t happen, but can’t guarantee it, as Apple says. Don’t fall into the wrong hands. If it is passing back into a remanufacturing chain as with Apple’s, that takes steps to ensure that data are wiped fully. I still cannot see any use for it: if the SSD is broken, it is much better to physically destroy it. There is no case on record as far as I know that anyone has ever been able to recover data during or after that process.Some time ago, someone asked me to write a tool to ‘sanitise’ an SSD in the way you propose. Creating an app form a python script for macOne of them is to gain access to the device and even the password.I think that I did not explain properly. It is not impossible to break a password or security measure like T2 chip. I understand what you say, but one thing is that as far as we know… whatever, and other thing is that something is impossible. If you want to ensure that your data are not recoverable, encrypt them – that is the whole purpose of encryption.Thanks. Do you know if there is such application? If not, it would be great if you could make it. That is what I meant and it would be great if an application could do it automatically (simply filling the disk overnight, duplicating a file a said above). Simply because such data does not exist any longer.One way is to physically destroy the disk, but that may not be desired or possible (cannot easily open device, like current iMac, unless using special tools, with danger of breaking Mac and voiding warranty).Other is to format disk and fill it completely leaving 0 bytes left. Even for the owner of the device and password. Even if the device is available and the password is available.
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