Update Ubuntu VPS returns error

[Ryaan J.]

Please, somebody help. I just purchased this VPS and installed Ubuntu-16 on it. I logged in as the root user and issued an apt-get update, but I got the error below. What could be wrong?

W: Problem unlinking the file /var/cache/apt/pkgcache.bin - RemoveCaches (30: Read-only file system) W: Problem unlinking the file /var/cache/apt/srcpkgcache.bin - RemoveCaches (30: Read-only file system) W: Not using locking for read only lock file /var/lib/dpkg/lock

[Clay Page]

Advice: Ubuntu-16 - It’s no longer supported. Strongly consider upgrading to Ubuntu 20.04 or 22.04 if this is a new VPS.

You can try this if u are running still on Ubuntu 16:

Reboot the server (safest first step)

Sometimes the filesystem went read-only temporarily due to a glitch. Try:

reboot

After rebooting, run:

mount | grep ' / '

If it shows rw (read/write), you're good and can try: apt update.