Can't install macOS High Sierra 10.13.4

Try it with the Combo Update from here:

Download macOS High Sierra 10.13.4 Combo Update

The Combo Update is a fuller install, as opposed to an incremental "delta" update, so it should overwrite any files that are damaged or missing.

"Error: -69842: Couldn't mount disk"

- Please do a complete backup before proceeding.

- You may check to see if your disk is unencrypted. Temporarily you could Turn Off File Vault from system preferences > security and privacy > File Vault > Turn Off

- Restart and login as administrator

- Open Terminal, and type "sudo diskutil verifyDisk disk0" and check for any boot error (type password at prompt)

- If any error gets detected, type "sudo diskutil repairdisk disk0" and press "y" (you must have total backup before this)

- If the Error: -69842: Couldn't mount disk continues to show up, try the command "mount /dev/disk0" (without quotes)

- If the Error: -69842: Couldn't mount disk still persists, you may try command "mount force /dev/disk0"

- If the disk gets mounted, or the repair is successful, type "restart" and hit return

- Try the HS installation after the disk is successfully repaired

# Clean HS installation is only possible if the partition map is successfully verified

# If the diskutil fails to repair and mount disk0, chances are your disk is partially or completely corrupted

# Best advise is to take the system to apple care, or reinstall OS X from scratch

## You may try in safe mode as mentioned earlier by others

## If you are confident, you may try fsck command or GParted to check and repair filesystem errors

## You may also tryto use Apple Hardware Test on your Mac - Apple Support

Try searching the temporary update files from the finder and delete them permanently (you need higher permission for this, maybe root access). Then restart in safe mode to download the update again and install.

Maybe little time consuming but the easiest way is to erase the system and reinstall fresh new OS X. macOS High Sierra: Erase and reinstall macOS

This time you could try the combo update in safe mode. Make sure you have enough space and a really good internet connection throughout the download and installation procedure.

After numerous attempts (Combo Update, Recovery Mode, Safe Mode, resetting NVRAM, Time Machine restore) trying to fix the 10.13.4 update issue with no result, I've decided to reformat my Mac's hard drive and do a clean install. After the clean install, I was able to successfully update to 10.13.4 and being able to shutdown normally without any issue. I know that this route is not for everyone as it involves reinstalling all your apps and settings (using Migration Assistant to restore my backup from Time Machine didn't work).

I hope there will be a fix soon for those who can't afford to go the clean install way like I did.

I had the following problems. This is my worst experience ever not only with an Apple device but with any other device.

• 10.13.3 Update is not properly installed
• the system cannot start anymore
• I can only start in safe mode by pressing Shift button
• I try to install in safe mode, but it does not help.
• Resetting NRAM does not help
• Any solutions I try to find on the internet (WHY THERE'S NO OFFICIAL ARTICLE THAT COULD HELP??) do not help
• In recovery mode (Command+R) restoring OS does not work because 'The recovery server could not be contacted'.

  A common solution to fix date/time did not work probably because my date and time was OK

• Disk Utility does not find any problems
• Downloading full High Sierra installer so that I could create a bootable drive to reinstall everything.. guest what..
  does not work, because it just does not download it. It downloads only 400+KB of 2 skeleton folders.
• Well, at this point I don't know what to do and click all available options.

So what helped:

• In safe mode I select the first option in the top menu.. something like Select Startup Disk. I select my only disc named MacOS 10.13.3. It asks for some confirmations. Then reboots and voila, I have a normal boot of 10.13.3.
• Of course, I'm not going to spend my time on trying to update my Mac anymore.
• Now I can download full High Sierra installer and can create a bootable drive. Of course, I'll do that.

I've spent 4 days of my life for nothing. Official support articles did not help.
I'm angry.

Hi all,

I have a similar problem. Let me try to explain everything I have done.

My MBP is Late 2011. Running High Sierra 10.13.3 normally, no problems at all.

Recently I changed the disk to a 2tb and it was recoverd from a Time Machine Backup, wich took me about 3 days to complete. this was done after the upgrade to High Sierra.

Recently, the upgrade to 10.13.3 was constantly asking to install, even when I access "About you Mac" shows me that I was on that version. When 10.13.4 was out I though this problem would end, but the installation starts and it asks for boot. After it boots, it starts installing (about 15 min) and boots again, showing me that screen after installation asking to share data with apple, etc... after that screen, there's another one showing configuration process and finishes without any error.

After it starts, it show that the upgrade was not installed and keeps on 10.13.3.

I've been reading this topic and was trying to do some procedures here.

• Tried to install the standalone Update to 10.13.4 but got the same problem, it keeps on 10.13.3.
• When I run diskutil repairDisk disk0, it gives me:

Unable to verify this whole disk: A GUID Partition Table (GPT) partitioning scheme is required (-69773)

Then I ran "diskutil list" and I got the results below. I thought that I already had a GPT partition, since the upgrade process to High Sierra passed hours converting my FS:

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: FDisk_partition_scheme *2.0 TB disk0

1: Apple_HFS MacBook HD 2.0 TB disk0s1

Then, reading another topic, I saw that my solution would be converting my MBR partition to a GPT one. So I downloaded and installed GDISK. Running GDISK -l I get:

Problem opening /dev/disk0 for reading! Error is 1.

I searched about that and found out that SIP must be disabled to run it, and I'm about to do that, but I read something about my Late 2011 MBP would not support booting GPT.

So, before I made some madness and have to wait more 3 days to restore my MBP from my Time Machine, Please, somebody here could give some help to finally put my MBP running 10.13.4 ?

Thanks !

I have the same issue. Now whenever I attempt to do a soft reboot (i.e. "apple" menu , then "Restart..."), the computer just does the similar hang with blank screen. Hard reboot (holding down the power button) still works.

Is Apple even looking into this issue?

Cheers,

Huck

I also have the same problem, although I have an error file. I can only load my Mac in Safe mode.

Installing in Safe mode does not help.

Here is my install.log

http://www.filedropper.com/installerlog1-apr-2018

- Login as administrator, or type password when prompted

- Open Terminal, and type "sudo diskutil verifyDisk disk0" and check for any boot error

- If any error gets detected, type "sudo diskutil repairdisk disk0" and press "y" (you may backup everything before this)

- restart, and login as administrator

- connect to a high speed internet network

- connect power adapter

- make sure you have more than enough free disk space

- quit all application, and install High Sierra

| => sudo diskutil verifyDisk disk0

Password:

Started partition map verification on disk0

Checking prerequisites

Checking the partition list

Checking the partition map size

Checking for an EFI system partition

Checking the EFI system partition's size

Checking the EFI system partition's file system

Checking the EFI system partition's folder content

Problems were found with the partition map which might prevent booting

Error: -69842: Couldn't mount disk

________________________________________________________________________________

| => sudo diskutil repairdisk disk0

Password:

Repairing the partition map might erase disk0s1, proceed? (y/N) y

Started partition map repair on disk0

Checking prerequisites

Checking the partition list

Adjusting partition map to fit whole disk as required

Checking for an EFI system partition

Checking the EFI system partition's size

Checking the EFI system partition's file system

Checking the EFI system partition's folder content

Problems were encountered during repair of the partition map

Error: -69842: Couldn't mount disk

So.....I went to the apple store - their solution was to take my MacBook pro, wipe it out, instal the newest/10.13.4, and then have me restore from my backup/time capsule at home.

So that's what I id to get over this. This is the second OS update (first one was the initial High Sierra) where I had to wipe out and restore.

Cheers,

Huck

Same here. But for me it won't boot in to 10.13.3 normal mode (I can force it to boot into 10.13.3 safe mode), but it always boots into recovery mode and gives a message box "The macOS installation couldn't be completed." with buttons to Shut Down, Restart, Save Log, and View Log. So I clicked Save Log, but what am I supposed to do with the saved log?

BTW, my machine is a 2015 MBPR with 1TBSSD.

"Password: I can't get a cursor to show so I can enter a password (my admin password, I assume)."

Yes. This is the admin password you need to enter. Don't worry, just type the password carefully whenever it asks. Terminal will detect your input even though it shows nothing. This is the way you enter admin password in terminal.

Just type the password, and hit return.