Is 12.04 upgradable?

[Robert Heller]

Having failed to install 18.04 on my desktop machine (with preexisting 
Software RAID and LVM), I am going to try the 12.04 ALT image.  My question 
is: will I be able to upgrade it to 18.04 (by way of 14.04 and 16.04)?  I 
don't really want to install 12.04, but it is the last version with an ALT 
image.  The 18.04 installer images (both desktop and server) fail to install 
-- the desktop because it lacks the software RAID tools and the server image 
because it appears to be broken it starts the RAID and sees the LVM, during 
boot up, but the storage scan fails -- it seems to not like my separate RAID 
array for my /boot file system -- the Python code crashes.

(I am uncertain that the 12.04 ALT image will install, given my experience 
with Ubuntu so far.)

-- 
Robert Heller             -- Cell: 413-658-7953 GV: 978-633-5364
Deepwoods Software        -- Custom Software Services
http://www.deepsoft.com/  -- Linux Administration Services
heller at deepsoft.com       -- Webhosting Services