PocketBook Touch - Manual (Page 84)

Settings 84
To add new profile, open the corresponding item. You will
be suggested to set destination (local memory or SD card)
and to enter the name from on-screen keyboard. After
this current above-mentioned parameters will be stored
at this profile.
To activate profile open the one you need. In profile
context menu you can change avatar, duplicate profile
to a new one (to the SD card or internal storage either),
rename or delete profile.
System
Format Internal Memory – this action will erase all data,
except system files;
CAUTION! If you need to erase all data on the Device, use this
feature only, don’t try to format the Device internal memory via PC.
Format SD card – this action will erase all data from the
external microSD card;