Most of my android phones have once been so. I can see the internal eMMC's partition layout in "Windows Disk Management", counting there's over 20 parts. Some partitions have letters in "My Computer". The phone also appears as
/dev/sdb in Ubuntu and I can access
/system and other ext4 partitions as normal.
parted can correctly recognize them and even modify them. Everything just acts like a plain hard disk.
fastboot have no response on these phones. However I can't reproduce this situation nor can I kick it out for sure (One of them got kicked back to normal accidentally). Can anyone tell me what's this special mode?
Note: All these phones that have this issue are equipped with Qualcomm Snapdragon SoCs (I don't own MTK phones), namely S200, S410, S800 and S810.
Successfully got that S800 phone (nubia Z5S NX503A) again in the state described above. My operation is to first get the phone in fastboot (bootloader) mode and then, while holding BOTH volume keys down, press and hold the power button for 10 sec. Now the phone is here.
root@ubuntu:/dev# parted sdd GNU Parted 3.2 Using /dev/sdd Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) print Model: Qualcomm MMC Storage (scsi) Disk /dev/sdd: 31.3GB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 67.1MB 134MB 67.1MB fat16 modem msftdata 2 134MB 135MB 524kB sbl1 3 135MB 135MB 32.8kB dbi 4 201MB 201MB 32.8kB DDR 5 268MB 269MB 524kB aboot 6 269MB 269MB 512kB rpm 7 336MB 346MB 10.5MB boot 8 403MB 403MB 512kB tz 9 403MB 404MB 1049kB pad msftdata 10 404MB 406MB 1573kB modemst1 11 406MB 407MB 1573kB modemst2 12 407MB 408MB 1049kB misc 13 408MB 419MB 10.5MB splash 14 470MB 1758MB 1288MB ext4 system msftdata 15 1758MB 10.4GB 8616MB ext2 userdata msftdata 16 10.4GB 10.4GB 5243kB ext4 persist msftdata 17 10.4GB 10.9GB 524MB ext4 cache msftdata 18 10.9GB 11.1GB 157MB ext4 customfs msftdata 19 11.1GB 11.1GB 10.5MB recovery 20 11.1GB 11.1GB 1573kB fsg 21 11.1GB 11.1GB 1024B fsc 22 11.1GB 11.1GB 8192B ssd 23 11.1GB 31.3GB 20.1GB fat32 grow msftdata (parted) quit