iMac-de-Romain:~ romain$ diskutil repairDisk disk1 ; diskutil list disk1
Repairing the partition map might erase disk1s1, proceed? (y/N) y
Started partition map repair on disk1
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
Repairing the EFI system partition's file system
Repairing file system
Creating a new EFI system partition
Checking the EFI system partition's folder content
Checking all HFS data partition loader spaces
Preparing to create trailing loader space by shrinking the volume "APswap" on disk1s2
Creating loader space, part 1 of 3: Verifying the file system
Creating loader space, part 2 of 3: Shrinking the file system from 1 073 741 824 to 939 524 096 bytes so that this partition can be smaller
Creating loader space, part 3 of 3: Shrinking the partition in the partition map to open up loader space
Preparing to create trailing loader space by shrinking the volume "Disque AirPort" on disk1s3
Creating loader space, part 1 of 3: Verifying the file system
Creating loader space, part 2 of 3: Shrinking the file system from 1 998 251 409 408 to 1 998 117 191 680 bytes so that this partition can be smaller
Creating loader space, part 3 of 3: Shrinking the partition in the partition map to open up loader space
Checking booter partitions
Reviewing boot support loaders
Checking Core Storage Physical Volume partitions
The partition map has been repaired
Finished partition map repair on disk1
/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 864.0 MB disk1s4
3: Apple_HFS APswap 939.5 MB disk1s2
4: Apple_HFS Disque AirPort 2.0 TB disk1s3
iMac-de-Romain:~ romain$