Can you use a MacBook Pro with external SSD when internal SSD failed
I have a 13” MacBook Pro with TouchBar (A1706 with T1) purchased back in 2016. It’s a great computer. A few weeks ago I made the mistake of knocking a glass of water over it.
At the time, I powered it off, removed the bottom case and dried it out. One of the water detection stickers (on the left hand side when looking from underneath and screen on top) turned pink.
Later that day and for the next few days the computer worked flawlessly.
Over the course of the next week it would occasionally freeze and seemed to no longer be able to find the SSD (after it had booted). This happened intermittently, but more frequently when powered by USB-C port. At this time I did a SMC reset and NVRAM reset and it did not make any real difference. It was still able to boot and would still lose access to the SSD intermittently.
After about a week I decided to try doing another SMC reset and NVRAM reset to see if this would make things more reliable. It did not, and now it will not detect the internal SSD at all.
I have entered Mac OS recovery mode, and it cannot find the SSD using Disk Utility, and downloads the recovery software over the internet.
Q1: Is there a way to get the internal SSD operating again? Feels like the MTBF was becoming more frequent over the first week and now it may be completely stuffed, but I am curious to know if there is a different set of settings I can try to get it up again.
I have purchased an external USB SSD, and it would be great to be able to run the Mac from this. Afterall the RAM and CPU still appear fully operational. On the SSD I have installed Big Sur, and I am able to boot into safe mode from this drive. However I run into the same issue many others experience where new firmware is required for the TouchBar and T1 chip.
Q2: Is there a way to use a MacBookPro with a non-operational internal SSD, but with an external SSD and boot from it? How do I install the correct firmware onto the Mac? The Big Sur installer does not have obvious firmware drivers. The Catalina installer does, but appears to not be able to install these drivers (do they have to be installed on internal SSD)?
It would be great to continue to use the Mac for something! Any assistance appreciated.
Perhaps you need to https://support.apple.com/en-us/HT208198 enable external boot. Let us know
Turn on your Mac, then press and hold Command (⌘)-R immediately after you see the Apple logo. Your Mac starts up from macOS Recovery.
When you're asked to select a user you know the password for, select the user, click Next, then enter their administrator password.
When you see the macOS utilities window, choose Utilities > Startup Security Utility from the menu bar.
When you're asked to authenticate, click Enter macOS Password, then choose an administrator account and enter its password.
To allow your Mac to use an external startup disk:
Open Startup Security Utility.
Select ”Allow booting from external media.”
Your Mac doesn't support booting from network volumes, whether or not you allow booting from external media.
If you want to select an external startup disk before restarting your Mac, quit Startup Security Utility, then choose Apple menu > Startup Disk.
bmx2019 さんによる
Thanks for the response. The Command+R when tried without the external SSD can only download the recovery mode tools from the internet. With the external SSD connected it can use the Big Sur version of the tools.
I used the Big Sur version, reinstalled the OS, but it then failed again at the usual place “A critical software update is required for your Mac…”
The issue really is, if the internal SSD is stuffed then can you boot from an external SSD and store the Touch Bar firmware on the external SSD.
mike さんによる