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  • Can I dd copy an sdcard image to a USB stick for a Pi 4B?

    From Chris Green@3:633/10 to All on Monday, March 09, 2026 16:51:00
    Does a bootable USB stick for a Pi 4B have the same format as a
    bootable SD card? I.e. can I just use dd to copy one to the other
    (not on the Pi itself) and expect it to work?

    --
    Chris Green
    ú

    --- PyGate Linux v1.5.12
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)
  • From JJenssen@3:633/10 to All on Monday, March 09, 2026 18:54:52
    Am 09.03.26 um 17:51 schrieb Chris Green:
    Does a bootable USB stick for a Pi 4B have the same format as a
    bootable SD card? I.e. can I just use dd to copy one to the other
    (not on the Pi itself) and expect it to work?


    My experience is that you can.

    --- PyGate Linux v1.5.12
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)
  • From Chris Green@3:633/10 to All on Monday, March 09, 2026 18:28:07
    JJenssen <joemajen@arcor.de> wrote:
    Am 09.03.26 um 17:51 schrieb Chris Green:
    Does a bootable USB stick for a Pi 4B have the same format as a
    bootable SD card? I.e. can I just use dd to copy one to the other
    (not on the Pi itself) and expect it to work?


    My experience is that you can.

    OK, thanks.

    --
    Chris Green
    ú

    --- PyGate Linux v1.5.12
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)
  • From paul lee@1:105/420 to Chris Green on Monday, March 09, 2026 18:55:05
    Does a bootable USB stick for a Pi 4B have the same format as a
    bootable SD card? I.e. can I just use dd to copy one to the other
    (not on the Pi itself) and expect it to work?

    While I don't understand the 'format' bit, yes you can absolutely dd a USB to and SD for a Pi image...

    dd if=/dev/xxx of=/dev/xxx

    (There are other options you can use that I prefer;)

    dd if=/dev/xxx of=/dev/xxx bs=4M status=progress conv=fsync

    Find USB/SD devices:
    lsblk

    Verify write after dd:
    sync



    |07p|15AULIE|1142|07o
    |08.........

    --- Mystic BBS v1.12 A49 2024/05/29 (Linux/64)
    * Origin: 2o fOr beeRS bbS>>20ForBeers.com:1337 (1:105/420)
  • From Lawrence D?Oliveiro@3:633/10 to All on Wednesday, March 11, 2026 12:30:01
    On Tue, 10 Mar 2026 19:52:49 +0000, druck wrote:

    Use lsblk to list the available drives and make sure you don't write
    to anything that is mounted.

    It is useful add output of the SIZE, VENDOR and MODEL fields in lsblk,
    as additional verification that you?re destroying the right volume. ;)

    sudo unmount /dev/xxx

    s/unmount/umount/

    --- PyGate Linux v1.5.12
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)
  • From John R Walliker@3:633/10 to All on Wednesday, March 11, 2026 09:08:42
    On 11/03/2026 00:48, Lawrence D?Oliveiro wrote:
    On Tue, 10 Mar 2026 19:52:49 +0000, druck wrote:

    Use lsblk to list the available drives and make sure you don't write
    to anything that is mounted.

    It is useful add output of the SIZE, VENDOR and MODEL fields in lsblk,
    as additional verification that you?re destroying the right volume. ;)

    sudo unmount /dev/xxx

    s/unmount/umount/

    Then check it again. Then one more time to be sure.
    John


    --- PyGate Linux v1.5.12
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)