Ok, malheureusement maintenant le finder ne répond plus, je suis désemparé je ne peux même pas copier les données sur un disque externe ...
	
		
			
		
		
	
				
			/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.1 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                 Apple_APFS Container disk1         499.9 GB   disk0s2
/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +499.9 GB   disk1
                                 Physical Store disk0s2
   1:                APFS Volume Macintosh HD - Données  266.3 GB   disk1s1
   2:                APFS Volume Preboot                 21.3 MB    disk1s2
   3:                APFS Volume Recovery                506.8 MB   disk1s3
   4:                APFS Volume VM                      4.3 GB     disk1s4
   5:                APFS Volume Macintosh HD            223.2 GB   disk1s5+-- Container disk1 3FC2CF02-B4AC-4226-A6EB-BB0A4A4CAA8A
    ====================================================
    APFS Container Reference:     disk1
    Size (Capacity Ceiling):      499898105856 B (499.9 GB)
    Capacity In Use By Volumes:   494372372480 B (494.4 GB) (98.9% used)
    Capacity Not Allocated:       5525733376 B (5.5 GB) (1.1% free)
    |
    +-< Physical Store disk0s2 00002CFD-214F-0000-8B69-0000716E0000
    |   -----------------------------------------------------------
    |   APFS Physical Store Disk:   disk0s2
    |   Size:                       499898105856 B (499.9 GB)
    |
    +-> Volume disk1s1 0B8A1CAF-01D9-3E82-9CBB-CA6444F359E3
    |   ---------------------------------------------------
    |   APFS Volume Disk (Role):   disk1s1 (No specific role)
    |   Name:                      Macintosh HD - Données (Case-insensitive)
    |   Mount Point:               /Volumes/Macintosh HD - Données
    |   Capacity Consumed:         266267848704 B (266.3 GB)
    |   FileVault:                 No
    |
    +-> Volume disk1s2 4B0EB2CE-96D2-4039-A2BF-FF003BC9AD20
    |   ---------------------------------------------------
    |   APFS Volume Disk (Role):   disk1s2 (Preboot)
    |   Name:                      Preboot (Case-insensitive)
    |   Mount Point:               Not Mounted
    |   Capacity Consumed:         21286912 B (21.3 MB)
    |   FileVault:                 No
    |
    +-> Volume disk1s3 C0CD2B26-34BD-48DE-9AA5-8E8A2FDCD3A9
    |   ---------------------------------------------------
    |   APFS Volume Disk (Role):   disk1s3 (Recovery)
    |   Name:                      Recovery (Case-insensitive)
    |   Mount Point:               Not Mounted
    |   Capacity Consumed:         506814464 B (506.8 MB)
    |   FileVault:                 No
    |
    +-> Volume disk1s4 822588E0-1F21-4E06-BBB9-05E5390FBA6B
    |   ---------------------------------------------------
    |   APFS Volume Disk (Role):   disk1s4 (VM)
    |   Name:                      VM (Case-insensitive)
    |   Mount Point:               /private/var/vm
    |   Capacity Consumed:         4296548352 B (4.3 GB)
    |   FileVault:                 No
    |
    +-> Volume disk1s5 2DB80699-CCED-4FE7-A4D1-3F3C9F245298
        ---------------------------------------------------
        APFS Volume Disk (Role):   disk1s5 (No specific role)
        Name:                      Macintosh HD (Case-insensitive)
        Mount Point:               /
        Capacity Consumed:         223116922880 B (223.1 GB)
        FileVault:                 NoSi tu redémarres une fois : même dysfonctionnement dans ta session à sa réouverture ?
diskutil info /Bonsoir Le-G
Passe la commande :
Bloc de code:diskutil info /
- qui va afficher un tableau d'informations sur le volume actuellement démarré
Poste le tableau.
 Device Identifier:         disk1s5
   Device Node:               /dev/disk1s5
   Whole:                     No
   Part of Whole:             disk1
   Volume Name:               Macintosh HD
   Mounted:                   Yes
   Mount Point:               /
   Partition Type:            41504653-0000-11AA-AA11-00306543ECAC
   File System Personality:   APFS
   Type (Bundle):             apfs
   Name (User Visible):       APFS
   Owners:                    Enabled
   OS Can Be Installed:       Yes
   Booter Disk:               disk1s2
   Recovery Disk:             disk1s3
   Media Type:                Generic
   Protocol:                  SATA
   SMART Status:              Verified
   Volume UUID:               2DB80699-CCED-4FE7-A4D1-3F3C9F245298
   Disk / Partition UUID:     2DB80699-CCED-4FE7-A4D1-3F3C9F245298
   Disk Size:                 499.9 GB (499898105856 Bytes) (exactly 976363488 512-Byte-Units)
   Device Block Size:         4096 Bytes
   Volume Total Space:        499.9 GB (499898105856 Bytes) (exactly 976363488 512-Byte-Units)
   Volume Used Space:         494.5 GB (494532284416 Bytes) (exactly 965883368 512-Byte-Units) (98.9%)
   Volume Free Space:         5.4 GB (5365821440 Bytes) (exactly 10480120 512-Byte-Units) (1.1%)
   Allocation Block Size:     4096 Bytes
   Read-Only Media:           No
   Read-Only Volume:          No
   Device Location:           Internal
   Removable Media:           Fixed
   Solid State:               No
   Hardware AES Support:      Nosw_vers -productVersionJe vois que c'est Macintosh HD le volume actuellement démarré.
- passe la commande (copier-coller) :Bloc de code:sw_vers -productVersion
- qui affiche la version de l'OS installé et donc démarré
Poste le retour.
10.14.5diskutil umount force disk1s1diskutil ap deleteVolume disk1s1 ; diskutil list disk1 ; df -H /Started APFS operation
Deleting APFS Volume from its APFS Container
Unmounting disk1s1
Deleting Volume
Removing any Preboot and Recovery Directories
Finished APFS operation
/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +499.9 GB   disk1
                                 Physical Store disk0s2
   1:                APFS Volume Preboot                 21.3 MB    disk1s2
   2:                APFS Volume Recovery                506.8 MB   disk1s3
   3:                APFS Volume VM                      4.3 GB     disk1s4
   4:                APFS Volume Macintosh HD            223.2 GB   disk1s5
Filesystem     Size   Used  Avail Capacity iused               ifree %iused  Mounted on
/dev/disk1s5   500G   223G   272G    46%  966994 9223372036853808813    0%   / 
	