Disk recovery mode error -2100F

Data recovery by target disk mode from Macbook Air not starting and showing 'Prohibitionary Sign' I have two Apple Macbook Air 2015 (Model A1466) laptops. One of those is not turning on since last few weeks. Most probably, it is a logical error caused due to corruption of drives because I did not shut down the mac properly after using it last time. Corruption of drives in HDD and SSD is also confirmed after running First Aid in Disk Utility. When I try to turn on the power button and enter the password, I get to see the circle with a slash sign (often referred to as 'Prohibitionary Sign' by Apple). The problem is that this data is not backed up and I want to recover it. I have attached photos of the ports of the same Macbooks with this post. Can anyone possibly advise which cable do I need to connect the two same macs to recover data from faulty mac by opening it in target disk mode? Thanks in advance!

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M3 Pro - Frequent "the version of macos on the selected disk needs to be reinstalled" I purchased a Macbook M3 Pro a month ago. I don't remember if it was the first or second day, I got a crash, typical black screen with some log. I thought this is odd, a brand new computer crashing, but well, ignored it and restarted. It was working fine until it restarted during the upgrade to Sonoma 14.2.1. This restart resulted in the error mentioned in the title: "The version of macos on the selected disk needs to be reinstalled". Ok, this wasn't cool. Ran the recovery and it failed again. Definitively, something was odd. The second time I ran the recovery, the installation was successful. A few days later, it crashed again, this time with the purple screen and sudden shutdown. I couldn't boot up right away, it didn't respond. Plugging the charger in this state resulted in a blinking orange light (but it's not about the charger malfunctioning), it's like the Macbook is not responding at all. After 5-10 minutes, it will boot up again, to the recovery message again... I discovered that I could ignore the message, restart, and it will normally boot. but definitively, this is something that shouldn't be happening. So, I tried to reinstall again. After three failed attempts at recovery, I went a step ahead and followed the old fashioned way of actually erasing the volume group and starting over. But this was no to avail, the issue is still happening, and pretty much I have pinpointed it. If I restart, it will end in the recovery message. If I shutdown, I will not be able to turn it on again for 10 minutes. Diagnostic tests say there are no issues, so I'm afraid that when I stop by a store, they will just run the diagnostics, say there are no issues, recover again, and tell me that that's all... What do you think could be happening? If diagnostics are good, hardware is good. As I did a hard reset, software should be good too... so I have no clue how to proceed. Notice that I said I noticed this during the upgade to Sonoma 14.2.1, but probably it was happening since the beginning. I rarely restart or shutdown the device.

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MacBook Pro A1502 - HDD issues Hoping someone can help me out here. A friend asked me if I can have a look at her MacBook as on startup, it’s coming up with a folder with question mark and won’t boot past it. The only information I was given was this just randomly happened. I’m not familiar with MacBooks but I’ve spent a few hours reading online and trying different methods to fix it without any luck. As I’m not familiar with Mac’s, I’ve simply been following different methods I’ve read in this forum and others. If anyone can suggest or point to issues they can see - please do so. Command+option+p+r - Resetting NVRAM did nothing. When holding command+r it loads straight into internet recovery. Disk Utilities shows; Disk images - Apple disk image. Under that is OS X Base System. In terminal, ‘diskutil list’ showed; disk0 (disk image) - GUID_partition_scheme +2.1GB disk0 Apple_HFS OS X Base System 2.0GB disk0s1 disk1 (internal_physical) GUID_partition_scheme *251.0GB disk1 EFI EFI 209.7MB disk1s1 7C3457EF-0000-11AA-AA11-00306543ECAC 250.8GB disk1s2 ** disk1 isn’t always shown. Sometimes it lists disk0 then goes to disk2. It also lists up to disk14 and the majority of these are 524.3KB. I’m not sure if these show a problem with the drive or not but thought I’d mention it anyway. I then went back into Disk utilities and nothing there. I restarted it, went back into disk utilities and it was shown up the top as APPLE SSD FirstAid on the drive (when it’s listed) shows the following: Problems were found with the partition map which might prevent booting. It then says “operation successful’. When attempting to reinstall OS X (after disk utilities sees it), when I get to selecting disk to install on - there is nothing found. . I tried to repair the disk in terminal (when seen) but it wouldn’t allow as it was mounted. And I couldn’t unmount the disk either. This is what I’ve understood to be going on -and I could be wrong so please let me know. The folder with question mark at startup is saying it can’t find the operating system or there’s an issue with operating system. FirstAid confirms this with the error it showed ‘Problems were found with the partition map which might prevent booting’. ’Macintosh HD’ is normally the operating system and it isn’t anywhere to be seen on this HDD. Disk Utilities only sees HDD sometimes. I'm guessing that the SSD has failed or is failing and even when it is seen, the operating system is corrupt and hence it won’t boot anyway. Unfortunately, this HDD hasn’t been backed up and ideally my friend wanted access to certain files but this doesn’t seem like it’s going to be possible. I can buy an external M2 enclosure and try but I only have a windows based computer at home so I don’t know if it will be possible, even if it did see the HDD when in an external enclosure. Does anyone have any input on this? If replacing the HDD is the only option, is there any compatibility issues that I need to be aware of when finding a replacement HDD? Is there anything else worth trying that anyone can recommend?

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Disk recovery mode error -2100F

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