I am unable to mount my segate external SSD. Everytime I restart macbook pro, I dont see volumes from my external SSD. If I try to mount manually from Disk utility, I get below error.
Could not mount “Volume1”. (com.apple.DiskManagement.disenter error -119930872.
Strange thing is, If I logout and log back in then all volumes are being mounted properly. But it does not work after restart.
Things I have tried until now are as below.
Problem started after I migrated from Monetory to catelina. It was working fine on Monetory mac OS.
SSD works fine when I tried on another laptop with mac OS 10.13(I believe, dont remember exact version)
Erased disk using Mac Disk Utility, command line, Windows diskpart as well as ran dd to clear first sector. I have also tried erasing disk with options like ExFat, APFS, MSDOS and JHFS but everytime I erase, i get below error after erase.
Could not mount disk2s1 after erase I am not sure if disk has any issue as it works fine if i logout and log back in. I am looking to use this external drive to install WindowsToGo to boot on Mac OS with one additional ExFAT drive to use between both Windows and Mac.
Any help is appreciated.
Update: Output of diskutil command is as below. Current state of disk2 is after tried all other partition options.
/dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *500.3 GB disk0 1: EFI EFI 314.6 MB disk0s1 2: Apple_APFS Container disk1 500.0 GB disk0s2 /dev/disk1 (synthesized): #: TYPE NAME SIZE IDENTIFIER 0: APFS Container Scheme - +500.0 GB disk1 Physical Store disk0s2 1: APFS Volume APPLESSD - Data 177.1 GB disk1s1 2: APFS Volume Preboot 1.9 GB disk1s2 3: APFS Volume Recovery 1.1 GB disk1s3 4: APFS Volume VM 20.5 KB disk1s4 5: APFS Volume Macintosh HD 8.8 GB disk1s5 6: APFS Snapshot com.apple.os.update-... 8.8 GB disk1s5s1 /dev/disk2 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *500.1 GB disk2 1: DOS_FAT_32 M 500.1 GB disk2s1