USB key that "mounts" twice
Anonymous user
-
Anonymous user -
Anonymous user -
Hello,
I have a USB drive that mounts twice, as if there is a partition. I would like to have only one disk that mounts, but with the Disk Utility, I have tried everything, and I still have 2 disks that mount, and I don't understand why.
Can someone help me?
Thank you
I have a USB drive that mounts twice, as if there is a partition. I would like to have only one disk that mounts, but with the Disk Utility, I have tried everything, and I still have 2 disks that mount, and I don't understand why.
Can someone help me?
Thank you
4 answers
Hello,
From the Disk Utility, if you select it, what information is displayed in the right window?
If there’s nothing important on it, format it.
Formatting USB drive on Mac
Reminder for formatting on Mac OS X:
— launch Disk Utility, (Applications / Utilities..)
— In the left part of the Disk Utility window, select the icon of the physical drive (not its existing partition located just below and shifted to the right, but the physical drive itself).
This icon has the manufacturer's name and indicates its capacity.
— In the right part of the window, click on the "Partition" tab
— Above the area where it says "Current," replace the word "Current" (drop-down menu) with 1 partition
— At the bottom of the area, click on "Options..."
— Choose MBR as the partition scheme
— Confirm
— Then in the main window, select "Mac OS Extended (Journaled)" or MS DOS (Fat32) format to make it compatible with a PC
— Give a title to this volume
— At the bottom of the window, click on Apply.
You can choose exfat (fat64) which allows copying large files. MSDOS (fat32) limits transfers to 4 Gb. However, if the drive is to be used on a TV, this format is not, or rarely, recognized.
But it all depends on your OS, the procedure may change.
https://www.commentcamarche.net/faq/45550-formater-une-cle-usb-ou-un-disque-sous-os-x-10-11-et-versions-ulterieures
When it’s urgent, it’s already too late (Talleyrand)
When everything has failed, read the manual ;)
From the Disk Utility, if you select it, what information is displayed in the right window?
If there’s nothing important on it, format it.
Formatting USB drive on Mac
Reminder for formatting on Mac OS X:
— launch Disk Utility, (Applications / Utilities..)
— In the left part of the Disk Utility window, select the icon of the physical drive (not its existing partition located just below and shifted to the right, but the physical drive itself).
This icon has the manufacturer's name and indicates its capacity.
— In the right part of the window, click on the "Partition" tab
— Above the area where it says "Current," replace the word "Current" (drop-down menu) with 1 partition
— At the bottom of the area, click on "Options..."
— Choose MBR as the partition scheme
— Confirm
— Then in the main window, select "Mac OS Extended (Journaled)" or MS DOS (Fat32) format to make it compatible with a PC
— Give a title to this volume
— At the bottom of the window, click on Apply.
You can choose exfat (fat64) which allows copying large files. MSDOS (fat32) limits transfers to 4 Gb. However, if the drive is to be used on a TV, this format is not, or rarely, recognized.
But it all depends on your OS, the procedure may change.
https://www.commentcamarche.net/faq/45550-formater-une-cle-usb-ou-un-disque-sous-os-x-10-11-et-versions-ulterieures
When it’s urgent, it’s already too late (Talleyrand)
When everything has failed, read the manual ;)
Hello,
Hi dede :)
Connect your USB drive,
then launch the Terminal application found in Applications / Utilities
In the Terminal window type this command:
diskutil list
And take a screenshot of the result, which you put here.
For example, here as a result, we see:
- in blue the command I typed,
- in green the contents of my internal startup disk
- in red the contents of a USB drive that I connected for the example
To find out how to post an image here:
https://www.commentcamarche.net/infos/25913-ccm-inserer-une-image-dans-une-discussion/
@+
--
Always provide your complete system configuration - exact computer model, exact OS version.
Hi dede :)
Connect your USB drive,
then launch the Terminal application found in Applications / Utilities
In the Terminal window type this command:
diskutil list
And take a screenshot of the result, which you put here.
For example, here as a result, we see:
- in blue the command I typed,
- in green the contents of my internal startup disk
- in red the contents of a USB drive that I connected for the example
To find out how to post an image here:
https://www.commentcamarche.net/infos/25913-ccm-inserer-une-image-dans-une-discussion/
@+
--
Always provide your complete system configuration - exact computer model, exact OS version.
Check out this folder from Francis, which explains everything about external drives or USB keys:
https://forums.commentcamarche.net/forum/affich-37636360-disques-durs-externes-ou-cles-usb-sous-mac-os
https://forums.commentcamarche.net/forum/affich-37636360-disques-durs-externes-ou-cles-usb-sous-mac-os
Sure,
in this image, we see the USB key in red, and we can see that there are 2 partitions in NTFS format on this key, one of approximately 32 GB, and a very small one of approximately 209 MB:
When the key is mounted, what does the Disk Utility window show? You can also include a screenshot here, and this should be after selecting the physical part, not one of the partitions - for example: the part framed in red here, and not its one or more partitions shown below:
Once this hardware part is selected, does the Erase button respond normally and allow this:
If that doesn't yield any results, we might go through the Terminal.
Don't hesitate to include screenshots ;)
--
Always indicate your system configuration completely - exact model of the computer, exact OS version.
in this image, we see the USB key in red, and we can see that there are 2 partitions in NTFS format on this key, one of approximately 32 GB, and a very small one of approximately 209 MB:
When the key is mounted, what does the Disk Utility window show? You can also include a screenshot here, and this should be after selecting the physical part, not one of the partitions - for example: the part framed in red here, and not its one or more partitions shown below:
Once this hardware part is selected, does the Erase button respond normally and allow this:
If that doesn't yield any results, we might go through the Terminal.
Don't hesitate to include screenshots ;)
--
Always indicate your system configuration completely - exact model of the computer, exact OS version.
Since which OS have you tried to format? You still haven't mentioned it!
Are you sure you're applying the correct formatting method?
but if necessary I also have a PC with Windows 10 available (I tried to format it on the PC without success either)
I believe I'm following the correct method, I have had Macs for 20 years now, I don't think I'm making any mistakes in that regard, but you never know.