malware on portable drive?

I recently plugged in an external HDD to a computer infected with malware in order to install the Av software that i carry on the ext. HDD.  Is there any danger of passing a malware infection to other computers after plugging into the infected one, even after AV scans with AVG and MBAM on the ext. HDD shows as clean?
AE_JBAsked:
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HellmarkConnect With a Mentor Linux Systems AdministratorCommented:
Yes, it is possible for malware to get onto any drive connected to an infected computer, but if multiple AV programs show it as clean, then you shouldn't have anything to really worry about. If there was a virus on the drive, something should detect it, and so logically the lack of detection would lead one to assume that it does not contain any viruses.
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Gerwin Jansen, EE MVEConnect With a Mentor Topic Advisor Commented:
Well, there is always some risk. I'd scan it on a machine that is known to be clean.
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HellmarkConnect With a Mentor Linux Systems AdministratorCommented:
I should add, that if you're really worried about this, I'd get a small, cheap flash drive, that you only keep AV on, and reformat it after you've connected it to a "dirty" system, so that it remains unsullied.
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younghvConnect With a Mentor Commented:
The safest way to carry around your additional applications is on a CD/DVD.

External devices - that are writable - of any kind are always going to be susceptible to malware, but it is not that likely.
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Gerwin Jansen, EE MVEConnect With a Mentor Topic Advisor Commented:
Or (little bit off-topic) get a USB thumb drive with hardware write protection.
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nobusConnect With a Mentor Commented:
there are a few solutions :    http://www.addictivetips.com/windows-tips/how-to-protect-usb-drive-from-virus-when-attached-to-infected-computer/
Write Protect Switch - as said
use USB Write Protector utility :.
 -ThumbScrew
 -USB Write Protector

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Here2HelpConnect With a Mentor Commented:
Hey.

Some other handy USB Protection tools.

Flash Disinfector
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AE_JBAuthor Commented:
At this point I will re run the AV scan on the ext. HDD.
In the future I plan to use a USB drive, with a write lock switch, only for malware removal.
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