How to use multiple Hard drives in Ubuntu linux?

Question

I am using matplotlib.pyplot.

I would like to do the following:

1. I want to plot a series of background dots (single blue dot in example).
2. I add an additional series of dots (3 black dots in example)
3. I save the figure
4. I remove the additional series of dots (black) and keep the background one (blue).

How can I perform step 4? I would like to avoid having to replot the background dots.

Hereunder is an example of code with step 4 missing.

import matplotlib.pyplot as plt

fig = plt.figure()

plt.xlim(-10,10)
plt.ylim(-10,10)

#step 1: background blue dot
plt.plot(0,0,marker='o',color='b')

#step 2: additional black dots
points_list = [(1,2),(3,4),(5,6)]
for point in points_list:
    plt.plot(point[0],point[1],marker='o',color='k')

#step 3: save
plt.savefig('test.eps')

#step 4: remove additional black dots

Solution

If you need to make a partition auto mounted in Ubuntu.

Run: sudo blkid

You will see UUIDs of your partitions, the next is just an example:

/dev/sda1: LABEL="Recovery" UUID="B23613F43613B875" TYPE="ntfs" 
/dev/sda2: LABEL="Windows" UUID="38CE9483CE943AD8" TYPE="ntfs" 
/dev/sda3: LABEL="Data" UUID="519CB82E5888AD0F" TYPE="ntfs" 
/dev/sda5: UUID="00d7d951-2a35-40fd-8e5d-411bb824ff3b" TYPE="swap" 
/dev/sda6: LABEL="Ubuntu" UUID="6044b1d0-208e-4ab3-850d-03a92e1516fc" TYPE="ext4"

You shall take a UUID from your output which is corresponding to the partition you are going to automount:

sudo gedit /etc/fstab

For a general-purpose read-write mount, add this line to the end of /etc/fstab:

for ext4

UUID=6044b1d0-208e-4ab3-850d-03a92e1516fc /disk-sda5-kubuntu     ext4    defaults         0     2

or for NTFS

UUID=519CB82E5888AD0F  /media/Data  ntfs-3g  defaults,windows_names,locale=en_US.utf8  0 0

but change UUID to yours.

Comments

[oldfred]

What files. Generally you want / (root) and probably /home's hidden user settings in SSD as they are accessed the most. And most data is not accessed often, so being on a slower hard drive is fine. You can put some data on SSD, but then have to manage how much so not to fill SSD unless you have a very large SSD.

[Tom]

thanks, it works just fine if I add a comma after 'temporaryPoints' on the first line.