RE: The Linux FAT issue on SD Cards.. maintainer support please

From: Mukund JB`. (mukundjb_at_esntechnologies.co.in)
Date: 08/19/05

  • Next message: Brett Russ: "Re: [git] libata-dev queue updated" 
    Date:	Fri, 19 Aug 2005 17:09:06 +0530
To: "Lennart Sorensen" <lsorense@csclub.uwaterloo.ca>

    Dear Lennart,

    >> I found that both of then do NOT have the partition table.
    >
    >If you don't use fdisk to create a partition on the card, then you
    won't
    >have one.

    I am having the partition table on the cam formatted CARD
    i.e. the partition 0.

    > If you mkdosfs on /dev/tfa0 then you loose the partition
    >table and get a filesystem on just the whole disk. If you do it with
    >/dev/tfa0p1 then you do it on the first partition which would then have
    >the FAT filesystem starting at the offset of the first partition (as it
    >should).

    Ok, I understood it. It looks like we have to verify the partition
    support we have implemented in the driver.

    >That is right. Although I believe if windows sees one with a partition
    >table it will just use the first valid partition table entry it finds
    >and ignore the rest.

    To handle it in a similarly in Linux we need to support this driver with
    partitions. There looks a loop hole in the driver.
    I will verify and fix it today.

    >> Please see the Images-All-MS-512.tar.gz.
    >
    >Well to mount anything without a partition table, you would mount the
    >whole device (/dev/tfa0) and to mount one with a partition table on it,
    >you would mount /dev/tfa0p1 or tfa0p4 or whichever partition it is.
    >
    >Zip drives used to be the same way. Some were formated with 1
    partition
    >(usually 1 or 4) and some had no partition table at all and used the
    >whole disk for the filesystem. I always had a /zip and /zip4 mount
    >point I used depending on the particular disk I was looking at.
    Just out of inquisitive ness.

    What r u the minor numbers of those zip devices.
    ll /dev/zip
    ll /dev/zip4

    Thanks for ur support.
    I will check with partition support in the driver & update it.
    Let me fix it there and come back.

    Regards,
    Mukund Jampala

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  • Next message: Brett Russ: "Re: [git] libata-dev queue updated"

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