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#1 2012-11-16 19:40:26

typewriterjason
#! Junkie
Registered: 2011-08-28
Posts: 257

Reinstalling Xandros on my old netbook, not using the whole SSD

Hey all,

So, I've got an old eeepc 901 that I've reinstalled it's Asus-homebrew Xandros on, after having Ubuntu on there. (This was before I discovered #!) I'm planning to sell the netbook, so I want to bring it back to what it was when I opened the box.

Everything went okay, but it looks like the installation left all the files and data from the Ubuntu installation on there instead of wiping everything clean. The file system says I've got about 700 mb left, which seems weird.

Since the homebrewed linux distro has an emphasis on usesr-friendlieness, there aren't any easy-to find programs to use to take a look at the rest of the SSD, or to format/delete/otherwise muck about with the data. I can get to a terminal, however.

My linux-fu is still pretty weak, hmm so I'd be excited to hear some ideas about where to look for those gigabytes of data that the OS didn't wipe clean.


Fortune favors the bold.
#! WALDORF
Asus EEEPC 1001PXD | Lenovo ThinkPad t410

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#2 2012-11-16 19:51:07

el_koraco
#!/loony/bun
From: inside Ed
Registered: 2011-07-25
Posts: 4,749

Re: Reinstalling Xandros on my old netbook, not using the whole SSD

Since you're planning to sell it, why don't you properly wipe it beforehand in order to make any data you had unrecoverable by people other than the CIA? Boot a live distro, and run as root

 dd if=/dev/zero of=/dev/sdx

, where x is the disk, probably sda, but could be sdb or sdc. Run fdisk -l to see. If it takes too long, /dev/true might be better than /dev/zero. You'll have to reinstall Xandros, but that shouldn't be too difficult.

Last edited by el_koraco (2012-11-16 19:51:59)

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#3 2012-11-16 20:34:37

typewriterjason
#! Junkie
Registered: 2011-08-28
Posts: 257

Re: Reinstalling Xandros on my old netbook, not using the whole SSD

That's a great suggestion, and just the kind I was looking for! Much appreciated, el_koraco!

This is the kind of communication that makes this board great. I'm not just getting information, but I'm learning too.


Fortune favors the bold.
#! WALDORF
Asus EEEPC 1001PXD | Lenovo ThinkPad t410

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#4 2012-11-17 08:12:46

oupsemma
#! Junkie
From: Cumbria / UK
Registered: 2008-12-06
Posts: 319

Re: Reinstalling Xandros on my old netbook, not using the whole SSD

$ df -h

Last edited by oupsemma (2012-11-17 08:23:19)


#Linux user 482038, eeepc 901 with #!, freed 901Go with Trisquel & gNewSense,
901 with Manjaro & ArchBang

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#5 2012-11-18 06:49:36

typewriterjason
#! Junkie
Registered: 2011-08-28
Posts: 257

Re: Reinstalling Xandros on my old netbook, not using the whole SSD


Fortune favors the bold.
#! WALDORF
Asus EEEPC 1001PXD | Lenovo ThinkPad t410

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#6 2012-11-18 08:44:47

el_koraco
#!/loony/bun
From: inside Ed
Registered: 2011-07-25
Posts: 4,749

Re: Reinstalling Xandros on my old netbook, not using the whole SSD

Not nothing, zeroes. It literally wrote zeroes over everything.

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#7 2012-11-18 18:45:18

typewriterjason
#! Junkie
Registered: 2011-08-28
Posts: 257

Re: Reinstalling Xandros on my old netbook, not using the whole SSD

Ok.

But that doesn't mean it created a gigantic file of zeroes, does it? Gparted showed the partitions as completely blank... or is this zeroes down to the binary level?

Thanks in advance for your patience with the newbie question...


Fortune favors the bold.
#! WALDORF
Asus EEEPC 1001PXD | Lenovo ThinkPad t410

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#8 2012-11-18 19:22:08

el_koraco
#!/loony/bun
From: inside Ed
Registered: 2011-07-25
Posts: 4,749

Re: Reinstalling Xandros on my old netbook, not using the whole SSD

Oh, yeah, binary zeroes, not ASCI ones. As in, all the files are stored as ones and zeroes on the binary level, and now they're all stored as zeroes. It's known as "low-level formatting". An even stronger security method is to use /dev/urandom, but unless you're selling the laptop to a security agency or someone with access to recovery software worth tens of thousands of dollars, you're set.

Last edited by el_koraco (2012-11-18 19:23:22)

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