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Re: Windows format doesn't completely change sdcard volume name for Android use

Cross-posted to 3 groups.

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On 2025-02-04 21:28, Marion wrote:

...

> However... with all magic... comes complexity (of understanding)...
> In another thread, an offshoot revealed that even if you change the volume
> name (aka volume label) of your portable storage sdcard, while Android apps
> can use either the old volume name or the new volume name (apparently), the
> question is why didn't Windows format *completely* change the Volume Name?

No, it is not the old label, but the UUID, which in Windows is kept 
short, not using the 128 bits. It is possibly the same as the label, or 
at least in the same style.

For instance, in Linux you can use "tune2fs" to write the uuid of an 
ext4 partition.

        -U UUID
               Set  the  universally  unique identifier
               (UUID) of the file system to UUID.   The
               format  of  the  UUID is a series of hex
               digits separated by hyphens, like  this:
               "c1b9d5a2-f162-11cf-9ece-0020afc76f16".
               The UUID parameter may also  be  one  of
               the following:

                    clear  clear the file system UUID

                    random generate a new randomly-gen-
                           erated UUID

                    time   generate  a  new  time-based
                           UUID

               The   UUID  may  be  used  by  mount(8),
               fsck(8), and /etc/fstab(5) (and possibly
               others)  by specifying UUID=uuid instead
               of a  block  special  device  name  like
               /dev/hda1.

               See uuidgen(8) for more information.  If
               the system does not have a  good  random
               number  generator such as /dev/random or
               /dev/urandom, tune2fs will automatically
               use  a time-based UUID instead of a ran-
               domly-generated UUID.


So, the Windows format command should create the uuid randomly, and 
perhaps allows to change it.


I suggest you find a command to at least display the uuid in Windows, 
and then format an usb mem stick to check what happens to it.


Maybe here: 
<https://stackoverflow.com/questions/70770357/how-can-i-get-the-guid-of-my-disc-partitions>

There is a sample code using Delphi, and some possibilities using the 
Power Shell.



-- 
Cheers, Carlos.

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Thread

Windows format doesn't completely change sdcard volume name for Android use Marion <marion@facts.com> - 2025-02-04 20:28 +0000
  Re: Windows format doesn't completely change sdcard volume name for Android use "R.Wieser" <address@is.invalid> - 2025-02-04 21:53 +0100
  Re: Windows format doesn't completely change sdcard volume name for Android use "Carlos E.R." <robin_listas@es.invalid> - 2025-02-04 23:44 +0100

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