Hey there.
I've got a late 2015 27in Mojave (should be latest 10.X version) iMac whose hard drive may have died so I'm trying to salvage what I can. No currently valid warranty, so here we go. Last week I woke it from sleep on 12/7 and all actions were taking an unnaturally long time to process: opening a small folder took 3+minutes, for example. **Note: I do have an external 2TB drive for Time Machine purposes -- I set it up back in July-ish, and it was set to run daily, which it did up until 12/6-7 when it started running seemingly every 40 minutes (this was seen in the Time Machine date logs). The delay in processing time rendered the machine virtually inoperable. I shut down and booted into Recovery mode to run through Disk Utility/First Aid, but the disk checks came back fine. Tried to boot/restart normally a few times, but the performance/processing issues persisted. I had a Windows 10 partition set, so I tried logging into that to see if it was running any differently, but I couldn't even get through the boot screens.
Back to the OS X Recovery mode, I said 'Screw it, I'll just restore from my Time Machine backup.' That took four days to complete, then when it did the system hung at what looked like the final restore step with the Apple logo and the progress bar underneath. It hung here for 6+ hours until I gave up, shut the system down and went back to the Recovery mode to try the Reinstall OS X option, which initially failed with a 'Cannot connect to recovery server' error. At this point, I said screw it and went back to the Disk Utility and tried to erase and reformat the drives in an effort to start fresh.
After erasing and reformatting what target disks I could (originally as APFS, then as Extended Journaled), I was able to get the Reinstall OS X option to fire, but the installation failed out and hung, again, on what seemed like the final step and failed to complete. In short, both the Recovery Reinstall OS X -and- command-alt-r Internet Recovery run course but either fails or hangs and never completes. Throughout the terminal/diskutil interactions, I've noticed that there are quite a few extraneous disks listing with extremely small file sizes that I can't seem to get rid of, in particular /disk6 through /disk22. Beyond that (I might be getting too tunnel-visioned on this at this point, been trying to get this resolved for over a week), it looks like there are duplicate images/fragments of the main drive. Preboot = the name of the latest disk erase/reformat. I'm thinking that the installations/repairs/recoveries are failing because the drive is so fragmented. Below is the diskutil output.
-bash-3.2# diskutil list
/dev/disk0 (internal):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme 24.0 GB disk0
1: EFI EFI 314.6 MB disk0s1
2: Apple_CoreStorage Preboot 23.6 GB disk0s2
3: Apple_Boot Boot OS X 134.2 MB disk0s3
/dev/disk1 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *2.0 TB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_HFS Time Machine 2.0 TB disk1s2
/dev/disk2 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme +2.1 GB disk2
1: Apple_HFS OS X Base System 2.0 GB disk2s1
/dev/disk3 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +5.2 MB disk3
/dev/disk4 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk4
1: EFI EFI 209.7 MB disk4s1
2: Apple_CoreStorage Preboot 999.7 GB disk4s2
3: Apple_Boot Boot OS X 134.2 MB disk4s3
/dev/disk5 (internal, virtual):
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Preboot +1.0 TB disk5
Logical Volume on disk4s2, disk0s2
C4BA7933-7DE1-43FA-A73B-99680D89E924
Unencrypted Fusion Drive
/dev/disk6 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk6
/dev/disk7 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk7
/dev/disk8 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk8
/dev/disk9 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +2.1 MB disk9
/dev/disk10 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk10
/dev/disk11 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk11
/dev/disk12 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +12.6 MB disk12
/dev/disk13 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +4.2 MB disk13
/dev/disk14 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +1.0 MB disk14
/dev/disk15 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +2.1 MB disk15
/dev/disk16 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk16
/dev/disk17 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk17
/dev/disk18 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +1.0 MB disk18
/dev/disk19 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +6.3 MB disk19
/dev/disk20 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +6.3 MB disk20
/dev/disk21 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk21
/dev/disk22 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +2.1 MB disk22
The end goal of what I'm trying to is simply restore the drive to a single disk and start from scratch but I cannot manage to find the correct commands/syntax to delete the /disk6-22 items, nor how to erase/clean/merge /disk0-5. Every time I try to erase/format down into a single disk, it seems like matters are made worse. I understand that disk 2 is the recovery drive, so I'm not concerned with that.
Any help or advice is much appreciated.
Thank you.
I've got a late 2015 27in Mojave (should be latest 10.X version) iMac whose hard drive may have died so I'm trying to salvage what I can. No currently valid warranty, so here we go. Last week I woke it from sleep on 12/7 and all actions were taking an unnaturally long time to process: opening a small folder took 3+minutes, for example. **Note: I do have an external 2TB drive for Time Machine purposes -- I set it up back in July-ish, and it was set to run daily, which it did up until 12/6-7 when it started running seemingly every 40 minutes (this was seen in the Time Machine date logs). The delay in processing time rendered the machine virtually inoperable. I shut down and booted into Recovery mode to run through Disk Utility/First Aid, but the disk checks came back fine. Tried to boot/restart normally a few times, but the performance/processing issues persisted. I had a Windows 10 partition set, so I tried logging into that to see if it was running any differently, but I couldn't even get through the boot screens.
Back to the OS X Recovery mode, I said 'Screw it, I'll just restore from my Time Machine backup.' That took four days to complete, then when it did the system hung at what looked like the final restore step with the Apple logo and the progress bar underneath. It hung here for 6+ hours until I gave up, shut the system down and went back to the Recovery mode to try the Reinstall OS X option, which initially failed with a 'Cannot connect to recovery server' error. At this point, I said screw it and went back to the Disk Utility and tried to erase and reformat the drives in an effort to start fresh.
After erasing and reformatting what target disks I could (originally as APFS, then as Extended Journaled), I was able to get the Reinstall OS X option to fire, but the installation failed out and hung, again, on what seemed like the final step and failed to complete. In short, both the Recovery Reinstall OS X -and- command-alt-r Internet Recovery run course but either fails or hangs and never completes. Throughout the terminal/diskutil interactions, I've noticed that there are quite a few extraneous disks listing with extremely small file sizes that I can't seem to get rid of, in particular /disk6 through /disk22. Beyond that (I might be getting too tunnel-visioned on this at this point, been trying to get this resolved for over a week), it looks like there are duplicate images/fragments of the main drive. Preboot = the name of the latest disk erase/reformat. I'm thinking that the installations/repairs/recoveries are failing because the drive is so fragmented. Below is the diskutil output.
-bash-3.2# diskutil list
/dev/disk0 (internal):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme 24.0 GB disk0
1: EFI EFI 314.6 MB disk0s1
2: Apple_CoreStorage Preboot 23.6 GB disk0s2
3: Apple_Boot Boot OS X 134.2 MB disk0s3
/dev/disk1 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *2.0 TB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_HFS Time Machine 2.0 TB disk1s2
/dev/disk2 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme +2.1 GB disk2
1: Apple_HFS OS X Base System 2.0 GB disk2s1
/dev/disk3 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +5.2 MB disk3
/dev/disk4 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk4
1: EFI EFI 209.7 MB disk4s1
2: Apple_CoreStorage Preboot 999.7 GB disk4s2
3: Apple_Boot Boot OS X 134.2 MB disk4s3
/dev/disk5 (internal, virtual):
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Preboot +1.0 TB disk5
Logical Volume on disk4s2, disk0s2
C4BA7933-7DE1-43FA-A73B-99680D89E924
Unencrypted Fusion Drive
/dev/disk6 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk6
/dev/disk7 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk7
/dev/disk8 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk8
/dev/disk9 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +2.1 MB disk9
/dev/disk10 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk10
/dev/disk11 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk11
/dev/disk12 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +12.6 MB disk12
/dev/disk13 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +4.2 MB disk13
/dev/disk14 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +1.0 MB disk14
/dev/disk15 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +2.1 MB disk15
/dev/disk16 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk16
/dev/disk17 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk17
/dev/disk18 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +1.0 MB disk18
/dev/disk19 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +6.3 MB disk19
/dev/disk20 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +6.3 MB disk20
/dev/disk21 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk21
/dev/disk22 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +2.1 MB disk22
The end goal of what I'm trying to is simply restore the drive to a single disk and start from scratch but I cannot manage to find the correct commands/syntax to delete the /disk6-22 items, nor how to erase/clean/merge /disk0-5. Every time I try to erase/format down into a single disk, it seems like matters are made worse. I understand that disk 2 is the recovery drive, so I'm not concerned with that.
Any help or advice is much appreciated.
Thank you.
