Page 2 of 2 FirstFirst 12
Results 11 to 12 of 12

Thread: Knoppix 7.0.4-EN CD & DVD notes & comments

  1. #11
    Junior Member registered user
    Join Date
    Dec 2002
    Location
    Germany
    Posts
    22
    Quote Originally Posted by otropogo View Post
    Are SDXC flash memory cards supported by Knoppix 7.0.4?

    Have recently acquired a Lexar Professional 400x 64GB SDXC fkash memory card for my camera, and discovered that neither Knoppix 7.0.2 nor Puppy Lupuplus 5.2.8 can mount this card either on my Toshiba’s internal SD slot, nor on the Delkin USB3.0 card reader connected to a pci-expressbus adapter. Both distributions are able to read and write older/smaller (8GB) SDHC cards on both external and internal readers.

    In Puppy, the system was unable to detect the presence of the card in either position, while Knoppix displayed an icon for it in both locations, but could only display the label of the card “Nikon D800“, but not the size or the contents.
    Worse, an 8GB CF card inserted in the USB3,0 reader, which is normally perfectly accessible from both Puppy and Knoppix could not be accessed either, even after the SDXC card was removed.

    Windows 7 had no trouble reading the Lexar SDXC in either position. Using the internal slot, the files copied to the laptop’s hard drive at 21.4MB/s, and at 35MB/s using the USB3.0 connection.

    Is there a fix in Knoppix 7.0.4?
    Your description sounds to me as if the card is formatted with an ExFAT file system. This file system is supported first in Knoppix 7.0.4, so it may be worth a try.

    Regards
    -Klaus

  2. #12
    Senior Member otropogo's Avatar
    Join Date
    Jul 2008
    Posts
    109

    7.0.4 supports SDXC/exfat, but NOT on an expressbus USB3.0 adapter

    Your description sounds to me as if the card is formatted with an ExFAT file system. This file system is supported first in Knoppix 7.0.4, so it may be worth a try.

    Regards
    -Klaus
    Hi Klaus. Good call! I installed 7.0.4, and was then able to read the 64GB SDXC card, but ONLY on the Toshiba's internal SD/XD slot and on the USB2.0 port.

    (in 7.0.2, the response is )

    Error mounting: mount exited with exit code 1: helper failed with:
    mount: unknown filesystem type 'exfat'
    When the card is inserted in the Delkin USB3.0 card reader attached to a Sabrent expressbus USB3.0 adapter, the card shows up in the file manager as 'D800' , and the mount/unmount tabs appear active, but when I try to mount it, a pop up appears and says:

    Error mounting: mount exited with exit code 1:
    helper failed with: ERROR :fsync failed
    The same Delkin card reader also allows me to mount the SDXC card when attached to the USB2.0 port. It would seem to be an issue with the USB3.0 driver in the kernel.

    I noticed that there seems to be an excess of storage devices listed in the file manager, both sdc1 and sdh, in addition to 'Knoppix' (presumably the usb flash device from which the OS is running) and 'D800' the label Nikon gives the flash card.

    Clicking on sdc1 gives "medium not found". While with sdh, the response is "mount point does not exist". These two persist when the SDXC is ejected and removed.


    So - definitely an improvement, but unfortunately, the transfer rate via the internal slot. is only half to a third that of the USB3.0 connection.

    The USB2.0 port is even slower, of course.

Page 2 of 2 FirstFirst 12

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


NEW Original OEM 60W Power Adapter Charger A1344 for APPLE 13

NEW Original OEM 60W Power Adapter Charger A1344 for APPLE 13" MacBook Pro A1278

$22.50



85W OEM NEW Power Adapter Charger For Apple Macbook Pro 13 15

85W OEM NEW Power Adapter Charger For Apple Macbook Pro 13 15" A1424 A1502 A1398

$25.50



Original OEM 61W USB-C Power Adapter Charger Apple MacBook Pro Air A1947 A1718 picture

Original OEM 61W USB-C Power Adapter Charger Apple MacBook Pro Air A1947 A1718

$27.50



OEM New 60W Power Adapter AC Charger Macbook Pro 2012-2017 A1435 A1425 A1502 picture

OEM New 60W Power Adapter AC Charger Macbook Pro 2012-2017 A1435 A1425 A1502

$25.50



New Apple OEM A1713 Laptop Battery for Apple Macbook Pro A1708 picture

New Apple OEM A1713 Laptop Battery for Apple Macbook Pro A1708

$39.99



Genuine OEM Apple iPad 10W USB Power Adapter 30 Pin Charger picture

Genuine OEM Apple iPad 10W USB Power Adapter 30 Pin Charger

$13.99



Apple OEM 45W Portable Laptop Power Adapter Model A1036 Genuine Original L51 picture

Apple OEM 45W Portable Laptop Power Adapter Model A1036 Genuine Original L51

$19.99



Genuine OEM A1322 Battery For Apple MacBook Pro 13

Genuine OEM A1322 Battery For Apple MacBook Pro 13"A1278 Mid 2009 2010 2011 2012

$26.89



APPLE OEM Power Extension Cable 6ft for Macbook, Macbook Air, Pro 2.5A 125V-NEW picture

APPLE OEM Power Extension Cable 6ft for Macbook, Macbook Air, Pro 2.5A 125V-NEW

$9.99



Apple OEM Original (A1374) 45W MagSafe Power Adapter with Fold Plug Only - White picture

Apple OEM Original (A1374) 45W MagSafe Power Adapter with Fold Plug Only - White

$10.95