Unable to access Lacie external disc

[blueb3ll]

I have 2 Lacie external drives in MSDOS (Fat32) format.

Since upgrading to High Sierra I can no longer access them and sometimes they also make the system freeze.

I have tried to erase them in Disk Utility but it did not work, see attached screenshot.

I do not know what to do now in order to make them work and would appreciate any help.

Thanks.

 

[casperes1996]

I have 2 Lacie external drives in MSDOS (Fat32) format.

Since upgrading to High Sierra I can no longer access them and sometimes they also make the system freeze.

I have tried to erase them in Disk Utility but it did not work, see attached screenshot.

I do not know what to do now in order to make them work and would appreciate any help.

Thanks.

Sometimes when I get this error, it works too erase them to a different file system and then re-erase them to what I want. Sometimes also having to change from GUID to MBR.

Alternatively you could try via the Terminal

 

[blueb3ll]

Sometimes when I get this error, it works too erase them to a different file system and then re-erase them to what I want. Sometimes also having to change from GUID to MBR.

Alternatively you could try via the Terminal

Thank you for your reply.
Disk Utility cannot erase the disc as it cannot be unmounted.

Could you please explain how to do it via the Terminal?

Thanks

 

[CoastalOR]

I have seen the unmount error also. What I do is after the can't unmount problem, click the Done button, select the top level drive (LaCie Rugged in this case), click erase again, name the volume, select the partition map, and ok the erase. It seems to work the second try for me.

 

[casperes1996]

First, run

diskutil list

and identify the disk on the list. Having identified the disk, going by a name such as "/dev/disk4", run the following command

diskutil eraseDisk JHFS+ (if you want HFS+ as the file system) 'name of drive' (no spaces unless in quotation marks) 'Disk ID'

 

[blueb3ll]

I have seen the unmount error also. What I do is after the can't unmount problem, click the Done button, select the top level drive (LaCie Rugged in this case), click erase again, name the volume, select the partition map, and ok the erase. It seems to work the second try for me.

Thank you for your tips.

I tried it several times but unfortunately it did not work

I have also tried it under Windows but it just froze.