---------- Forwarded message --------- From: Andy Shevchenko andy.shevchenko@gmail.com Date: Mon, Jan 13, 2020 at 12:52 PM Subject: fat: handle Windows formatted partition (thru USB Mass Storage) To: AKASHI Takahiro takahiro.akashi@linaro.org, Heinrich Schuchardt xypron.glpk@gmx.de Cc: Tom Rini trini@konsulko.com, U-Boot Mailing List u-boot@lists.denx.de, Simon Glass sjg@chromium.org, Bin Meng bmeng.cn@gmail.com
Hi!
I recently stumble over FAT partitioning issue. I have a device with MMC, one partition of which has been exported as disk via USB Mass Storage to the host. When Windows 10 sees that disk it can't handle it till I format it there. So far so good. However, the same partition can't be used under U-Boot due to Windows flow, i.e. it makes a partitioning on top of the actual partition while U-Boot expects that we only have one MBR (or partitioning) on the dist. So, the commands such fatls, fatload do not recognise any file there.
In Linux it's easy to use: mount -o loop,offset=65536 /dev/mmcblk0p9 /mnt (offset can be different)
But I would like to use it in U-Boot.
Any thoughts on this?