Problem with MacOS update 10.15.7 2020-001

Hello all,

I have an 2003 iMac, with 10.15.7 installed (Catalina) on an external SSD drive. The iMac boots on an external disk. Usually all security updates install correctly on the external SSD disk. For the last one, the installation seems ok, but the iMac reboots always on the internal HD. When I reboot on the external disk, the security updates seems not installed. I redo this operation multiple times, without success: the lastest update is proposed for installation, but when I do it, it does not install on the external disk...


What is happens ?

Thanks in advance


iMac 21.5″, macOS 10.13

Posted on Dec 15, 2020 4:42 AM

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Question marked as Top-ranking reply

Posted on Dec 16, 2020 8:23 AM

Also had issues with this 10.15.7 2020-001 update. Here is what worked running an Imac 2013 from external SSD.


  • When starting the update, still on black screen, it had a brief reboot.
  • After that the Mac failed to load from SSD every time.
  • As my internal drive is a clone the Mac was only starting up with the internal disk, and not recognising the SSD as target disk.
  • Pressing option key wasn't working to select SSD disk.


What worked for me:

  1. I unplugged everything connected to the Mac and plugged my SSD in a different USB (the closest to the edge)
  2. Did a PRAM reset (once)
  3. Switched on, loud startup sound and the Mac loaded my internal drive with the clone, then I shut down after loading
  4. Switched on again and pressed option key (the SSD disk appeared)
  5. After loading the SSD I noticed the update was still pending on Systems Pref
  6. Shut down again
  7. Switched on again to check it would load from SSD, and it did!
  8. Performed the update with no problem after that


Hope this helps..

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151 replies

Jan 21, 2021 9:19 AM in response to GavrielTech

Please keep in mind the title and topic of this thread. As Usher said, you are invited to post your general opinion about Apple's update politics or company's philosophy at another place. But remember users being in trouble with their Mac, they are looking for quick solutions and don't want to waste extra time reading irrelevant posts. By writing this, I stop now, too ;-)


Thanks and best greets,

Phil

Jan 22, 2021 8:18 PM in response to ElkyOne

Your taking the tread off topic, its not me who has a problem with Apple its you, you cant solve your problem and Apple did not design it for you too, so you need to take your issue to Apple not me, i mentioned in previous posts that your wasting your time if you think you can solve any of the issues mentioned in this topic, if so Apple would of banned you from the boards and removed everything.


the only work around i know of with all these issues implemented to force users to buy new machines is to use a clone application like CCC or SuperDuper, forget time machine because its also going to get corrupt in the event your system, drive (s) or even power supply is bricked by catalina.. i can confirm this works after contacting CCC and looking at threads they shared about this heinous system......which means the issue is never resolved, can not be and the only way out is to consistently back up on daily basis,


you guys have many great ideas and obviously spent hours days months on them but it is what it is and Apple wont change it as they are obviously going forward with this model in Big Sur as well....cross your fingers they dont kick clone apps off like they dud diskwarrior and other recovery apps forcing users to share files on line.

Jan 22, 2021 11:05 PM in response to usher19

Trolls... 🙄 Don't pay him any attention, Usher, being banned is just what he's begging for, 'cause than his self-fulfilling prophecy and opinion about "evil Apple" becomes true 🤓


BTW, apart from still preventing restarting or shutting down my iMac, it's still runs pretty fine like always before. Had one system crash and needed to restart, but unplugged all drives apart boot volume, and everything went fine. Some USB cabling excercise in the morning heheheh. (Crash seemed to be just a software issue, might happen twice a year, no big thing)


Cheers,

Phil

Jan 23, 2021 12:51 PM in response to GavrielTech

I do appreciate your frustration with your system not behaving the way you expect.


Is there actual evidence that Apple is conspiring to make people buy new computers by making their older ones stop working? I realize that you believe that to be the case, but I am asking because the company I work at has just mandated EVERYONE on Macs upgrading to Catalina, it's required due to IT Security requirements imposed by our primary customer. This means that between September 2020 and January 2021, about 4,000 Macs here were upgraded to Catalina. Including my work computer. Not only that, it was pushed out through our IT department, if you didn't upgrade by a certain date, it was forced remotely. More than 90% of us are still working remotely from home due to the pandemic, so that made it even more complicated, no in-person IT support. We are also all on mandatory full disk encryption, which adds another way that something can go wrong.


How many of these Catalina Macs are "older"? Not sure, but we normally are "replenished" with new units every three years. However, that has been slowed down due to the remote work/pandemic, so many, including me, have older than 3 years old Macs. (Mine is 4 years old.) Some have Macs that are 5-6 years old or older, they like to cling to them as long as possible.


We have a discussion board where people post issues or problems and either the IT support people respond, or contact you directly to remote in if need be and fix it, or often other users post their solutions, much as is done in these Apple discussions. The majority of users here have external disks used for backup, some bootable. I have one bootable clone, and two Time Machine backups, all still working well. We are also provided with a commercial cloud backup service. Most in house discussion posts have to do with things like webex video remote meetings setup and software settings, stuff like that, and also password resets/updates which we are also mandated to do every 3 months. It's mostly mundane stuff. But I haven't seen anything in our discussions about bootable clones not working, and I know people wanted reliable clone backups when the Catalina update was mandated, just in case. But the transition went smoothly.


I was concerned when reading this thread, especially with my own Catalina upgrade coming up, but it went smoothly. is there actual evidence that Apple is conspiring in the way you suggest, or is this something you have deduced, read on the internet, etc. If Apple is actually doing this, why haven't we seen more failures at my company?

Jan 23, 2021 2:14 PM in response to ElkyOne

Funny you mentioned using illegal software, beware that Tim Crook specifically stated that anyone using pirated software will have issues since the release of High Sierra and iOS 11, apple specifically designed the platform so developers can now monitor any activity meaning check back for updates, verify serial numbers, etc etc under fair use agreements.


I only see older Macs been sold with the original system they had been shipped in so if your ok with this and whatever software you use works by all means this will never fail on you..


Don't update if all works and read this https://www.shirtpocket.com/blog/index.php/shadedgrey/comments/breaking_the_tape/

we spent beyond our bed time discussing this subject and I do some times feel compelled to help others.

Jan 23, 2021 2:40 PM in response to GavrielTech

Ahh, and no, in general I'm not pirating that much. I pay my adobe cloud, I paid my logic, my plug ins. I pay my Apple Music and so on. When I earn money with something, hey, then I have to invest. But I won't blame no-one being on low money and torrenting for movies or even Photoshop, if it's not their profession or they simply can't afford it for what reason ever. It's not my job to judge ;-)

Jan 23, 2021 2:45 PM in response to ElkyOne

Hi, I was not saying you where or not, Catalina is designed in a way which causes problems if you are because these work arounds ilok, pace etc which link your user password, drive id, etc will effect Catalina during a update....


Sad that Apple did not implement the iOS PadOs into the OSX platform just yet as software prices for plugins like Eventide anthology, Lexicon, Solid State Logic, etc etc will be available under $30 bucks as to $900+, but you know they are ready to work around this with subscriptions in the future, in fact its what Avid is doing now.

Jan 23, 2021 2:51 PM in response to GavrielTech

Deffo true, a lot of software will go the subscription way, just by marketing and business terms this is quite better to calculate. If it would be possible in my world, I would offer my clients the same concept. "Pay me every month XY, and you got a free 15s commercial, one headline up to 150 characters, a rotating 3D version of your ugly logo, a one-pager website or 45" of music*. (* 15"s versions available separately, please check our rates) 😆

Feb 2, 2021 9:38 AM in response to fototypo

Replying to myself... After a glass of red I was curious ...


((Please note I had my iMac 14,2 (late 2013) running with the 2020-001 update already, so I'm not saying it works, if that failed for you! Don't want to be guilty somebody crashes their system!!))


The 2021-001 took about 20 Minutes and at least 5 blackscreens but it ran through right to the end without that wicked „no boot volume“ screen. So everything is installed now. BUT everything else seems just the same (in my case: I cannot plug the ext. startup volume directly to an usb port of the mac), no difference here. So I guess (its just a guess!) the basic problem discussed here is not solved. I checked and saw jet another boot-rom is installed (430), amongst a lot of other things.


At least the installation process worked this time. Probably not of a lot of help, but I wanted to report anyway.



Feb 9, 2021 5:34 AM in response to ElkyOne

An update...


This morning I installed the 10.15.7 2021-1 Security Update -- I had only my external SSD (macOS Catalina) and UPS power cable plugged into the USB ports on my Late 2013 21.5" iMac.


To my amazement, everything installed correctly, including the Safari update, with no issues. My iMac booted right up into macOS Catalina on the external SSD without my having to manually select it as the startup volume.


I also noted that the Boot ROM Version is now: 430.0.0.0.0

Feb 11, 2021 2:12 AM in response to SkyFires

Totally agree with you on this one ElkyOne, Apple want to make money, lot's of it as do most corporations out there. They seem to be doing the same for newer phones out there in that you cannot replace part or they are making it a lot harder.


I will not be bothering to install any more updates on my 14,2 iMac unless I either install an internal SSD or buy a new iMac when the M1 versions have matured. I bet the M1s will be a bit more expensive and with titchy SSDs.

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Problem with MacOS update 10.15.7 2020-001

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