By the way, per your post, it is more to mid 2012 MBP retina. The symptoms are similar to the drive health. Hold down CMD+S at start up to get to single user mode
wait until it finished loading and press enter
then type the following
fsck -fy >>>Enter
It will check the drives and when done try another one
Try this command for a few different times with different volumes
fsck_hfs -r /dev/disk1 then enter or disk1s1 or disk0s2 what ever depend on your drive partition.
That should make a lot of different. If that is not a solution, the EFI firmware need to clean up. It may have some address issues. The device should be fine but the drive directory may corrupt.
If it is EFI firmware, it cost $120 to reflash plus shipping. (lol good marketing)
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=== Update (06/05/2018) ===
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Power up the device while holding the Command + S until the command lines appears. Then press enter once and type the following line to make so many feel comfortable.
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fsck -fy
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The internal drive is usually disk0 and use the volume directory to rebuild each of them.
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First try the whole disk with the following line
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fsck_hfs -r /dev/disk0
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That will repair the drive and if there is any error, it will shows. That is the command to run the whole disk to repair file system.
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If that get error, try each volume.
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fsck_hfs -r /dev/disk0s1
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then try another partition
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fsck_hfs -r /dev/disk0s2
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That is forced the drive to repair. It is better if you have external drive to boot with the single user mode. If not, internal drive may not allow to access the root system unless I make you confused.
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If that do not work, feel free to post the detail and correct device model.
The symptoms are similar to the drive health. Hold down CMD+S at start up to get to single user mode
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By the way, per your post, it is more to mid 2012 MBP retina. The symptoms are similar to the drive health. Hold down CMD+S at start up to get to single user mode
wait until it finished loading and press enter
then type the following
fsck -fy >>>Enter
It will check the drives and when done try another one
Try this command for a few different times with different volumes
fsck_hfs -r /dev/disk1 then enter or disk1s1 or disk0s2 what ever depend on your drive partition.
That should make a lot of different. If that is not a solution, the EFI firmware need to clean up. It may have some address issues. The device should be fine but the drive directory may corrupt.
If it is EFI firmware, it cost $120 to reflash plus shipping. (lol good marketing)
The symptoms are similar to the drive health. Hold down CMD+S at start up to get to single user mode
wait until it finished loading and press enter
then type the following
fsck -fy >>>Enter
It will check the drives and when done try another one
Try this command for a few different times with different volumes
fsck_hfs -r /dev/disk1 then enter or disk1s1 or disk0s2 what ever depend on your drive partition.
That should make a lot of different. If that is not a solution, the EFI firmware need to clean up. It may have some address issues. The device should be fine but the drive directory may corrupt.
If it is EFI firmware, it cost $120 to reflash plus shipping. (lol good marketing)