Hello.
If you are using an existing 7.0.1 after the version of the Synology DSM was updated to 7.1, you may want to update to 7.1
or this is a guide for those who want to install 7.1 from the beginning.
For those who are new to this article, I will share it with you by adding and subtracting it from the existing 7.0.1 guide.
It is a translation from Korean to English using a translator.
Please understand if there is a slight misunderstanding.
Ex
Hi! I'm having issues installing DSM 7.1 and keeping it installed.
After successfully following the process and installing the DSM, if I reboot, often I have to reinstall the DSM from scratch (I'm shown the installation page and says "not installed". It may depend on any extra (official) package I installed?
SynologyNAS> cat /var/log/*rc*
START /linuxrc.syno.impl
Insert Marvell 1475 SATA controller driver
Insert basic USB modules...
:: Loading module usb-common ... [ OK ]
::