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I have a dual boot tablet, Android and Win10 are installed on the MMC drive. I am using linux/xubuntu in order to restore/manage the MMC drive. My goal is to replace the NTFS win10 partition. For some reasons, I cannot access directly to partitions > 8 with my ubuntu and the win10 partition is the 14th one, please look at the picture below.

I use kpartx -a /dev/mmcblk0 to be able to access separately to each partitions and then being able to access to the win10 partition.

After some tests, I found out after using kpartx command, some partitions get mounted. (android partitions) Afterthat, I cannot boot Android anymore. After installed from scratch the tablet, I used dd if=/dev/mmcblk0 in order to make a disk image. Then, by using kpartx and cmp, I saw, partitions are different.

If I disable the auto-mount in my xUbuntu, I don't have any problem anymore.

This means, xUbuntu changes something in one or more partitions when it mounts them. Could you tell me what mount could change ?

There are FAT32, NTFS and unknown partitions. When they are auto-mounted, I got some errors. (of course, android and unknown partitions...)

You know, the tablet has a BIOS very sensitive, if something is changed, the BIOS cannot run Android anymore...

enter image description here

None
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    Your description sounds a little confusing to me. First you mention Android and Windows 10, and then you talk about Ubuntu and Xubuntu. Could you please elaborate? – thiagowfx Jul 27 '16 at 04:10
  • And, if you don't want mount to alter your partitions, you can mount them as read-only (e.g. here). – thiagowfx Jul 27 '16 at 04:11
  • I edited my question, I use ubuntu only for repairing or managing. (ubuntu,xubuntu are same to me) Actually, I don't want to mount them, how mount alters the partition if mounted with read-write ? Thanks. – None Jul 27 '16 at 09:41
  • One simple example: whenever you read a file from a partition mounted as read-write, you also update its access time (which is metadata associated to this file). It's harder to modify the contents of a file without explicit intention, but (X)Ubuntu starts several background processes upon its initialization/boot, and you can never be 100% sure they won't touch your files. – thiagowfx Jul 27 '16 at 14:29

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