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FDisk Help



I have three physical drives in my system--/dev/sda is presumably my
boot drive, which shows up as six devices in /dev:
/dev/sda1,2,5,6,7,8. Additionally, there's a CD-ROM drive, and a 250GB
standard rotating disk. My boot partition is located on  a 120GB SSD,
which I presume is /dev/sda, is divided as follows according to df:

Filesystem              1K-blocks       Used Available Use% Mounted on
/dev/sda1                 8518920     879012   7184128  11% /
/dev/sda7                  368615       2058    343005   1% /tmp
/dev/sda5                 2817056     178752   2475488   7% /var
/dev/sda8                89493696      57076  84867532   1% /home

What, then, are /dev/sda2 and /dev/sda6? I tried looking at them with
FDisk and got the following:

For /dev/sda2: Failed to read extended partition table
(offset=5858805): Invalid argument

For /dev/sda6: device contains a valid 'swap' signature, it's strongly
recommended to wipe the device by command wipefs(8) if this setup is
unexpected to avoid possible collisions.

Device does not contain a recognized partition table.
Created a new DOS disklabel with disk identifier 0xa9732d81.

Could this one be the 250GB drive? If so, how do I handle this
equivalently in Debian, equivalent to how, say, Windows handles it in
Disk Management, by laying down a partition, formatting it, and
creating a mountable volume that's there every time the system boots? 

I actually tried answering my own questions by looking at an other
running system to see how this is done, but the system is a different
distro, not Debian's, and even though the device is mounted and ready
for use when the system boots, it's not in fstab, so I'm thinking the
disk itself is the problem, with either no partition or filesystem on
it. Am I on the right track?


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