![]() To deactivate the logging, just enter the following: The first thing I noticed was that fseventsd was logging information to the external disk. Look at the right column for stuff that might have activated the disk. When the disk wakes up, press ctrl-c to stop. Sudo fs_usage | grep name_of_volumeĮnter your login password. Replace name_of_volume with the name of your disk. For example, let’s say the volume name is Macintosh HD, you need to use ![]() If the volume name contains spaces, you need to add \ before every space character. The command will show you the name of your connected volumes. Otherwise, you’re going to get a LOT of additional output. To narrow the output, I used grep to just show events and access to the extra disk. To find the applications that were accessing the volume, I opened the terminal application and started to observe the output of the following terminal command. Replace -a with -b for changing the setting when on battery power. ![]() The command will set the time for sleep to one minute when using an AC adapter. I set the value before sleep to one minute, so I don’t have to wait long between tests. Here’s what I did to fix that problem.įirst of all, I needed to change the time before the disk went to sleep. The extra disk went to sleep when not in use, but then started within a couple of minutes or less. ![]() At the same time, I removed the DVD unit and installed a new 500gb drive instead. I replaced my internal drive on my MacBook Pro with an SSD disk, which made a massive difference in speed. In the menu you’ll find access to Disk Utility to prep your drive and then re-install your OS.My internal hard disk would continuously spin on my MacBook Pro and never goes to sleep. Once you’ve created your boot drive you’ll need to reboot under it. And off you have the older models it will have limited RAM so that also comes to play. Mojave requires Metal2 graphics services which your system does not have. High Sierra intro’ed APFS which only works on SSD’s but using it within a SATA based system is not that great. I do recommend you stick with Sierra Vs any of the newer MacOS’s. Here’s how to do this: How to create a bootable macOS Sierra installer drive So you’ll need to make an external bootable drive and besides that you’ll want to put on it the OS installer so you can appear a fresh copy from it. Think of it this way your shoes heel broke off and your stop by a shoe cobbler how is he going to fix your shoe? You need to take it off right! Thats the same here if you want to reformat the drive you need to boot up under a different drive to release the drive from the OS. When erasing it says “Erase process has failed” with details saying “Couldn’t unmount disk - Operation failed”.Įither make the encryption in FileVault to continue the progress which didn’t work after reading about it and trying things… or to erase the HD and start a new install from my Time Machine backup. I tried to repair or erase “Apple HDD HTS547575A9E384 Media” but it does not work. on Disk Images I see “Apple disk Image Media” which is 2.01 GB and has under it “OS X Base System”(1.29 GB) with option to eject which does not work. In Disk Utilty I see under Internal “Apple HDD HTS547575A9E384 Media” under which is greyed out my “Macintosh HD”. Now I can not even reformat the HD using Disk Utility from CMD R mode. I decided to reformat my HD to make a clean install(I have backed up the system with Time machine) after Disk Utility have failed to repair the disk. I think the problem might be something with repartitioning the HD but I see others have problem with encryption as well. After that I went to encrypt my HD using FileVault and it got stuck for days at around 60%. I am running Macbook Pro (Late 2011) on Sierra osX.įirst I repartitioned my HD into single partition(I had Bootcamp).
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