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First of all always use a virtual machine instead of your installed OS and mount it in read only mode when doing something with (probably) infected externals!

This prevents your PC/Account from being infected by whatever is on this HDD. Most likley a usual anti-virus should then be able to detect most of the malware and delete it.

If you doubt it anyway you can completely wipe the HDD using the VM.

In addition, there are already posts on this topic:

1. Safe to connect to external drive?

2. Mac OSX: What is the safest way to access an unknown USB storage?

First of all always use a virtual machine instead of your installed OS and mount it in read only mode when doing something with (probably) infected externals!

This prevents your PC/Account from being infected by whatever is on this HDD. Most likley a usual anti-virus should then be able to detect most of the malware and delete it.

If you doubt it anyway you can completely wipe the HDD using the VM.

In addition, there are already posts on this topic:

1. Safe to connect to external drive?

2. Mac OSX: What is the safest way to access an unknown USB storage?

At First of all always use a virtual machine instead of your installed OS and mount it in read only mode when doing something with (probably)infectet externals!

This prevents your PC/Account from beeing infected by what ever is on this HDD. Most likley a usual anti-vir should then be able to dectect most of the malware and delete it.

If you doubt it anyway you can completly wipe the HDD using the VM.

In addition, there are already posts on this topic:

1. Safe to connect to external drive?

2. Mac OSX: What is the safest way to access an unknown USB storage?

First of all always use a virtual machine instead of your installed OS and mount it in read only mode when doing something with (probably) infected externals!

This prevents your PC/Account from being infected by whatever is on this HDD. Most likley a usual anti-virus should then be able to detect most of the malware and delete it.

If you doubt it anyway you can completely wipe the HDD using the VM.

In addition, there are already posts on this topic:

1. Safe to connect to external drive?

2. Mac OSX: What is the safest way to access an unknown USB storage?

At First of all always use a virtual machine instead of your installed OS when doing something with (probably)infectet externals!

This prevents your PC/Account from beeing infected by what ever is on this HDD. Most likley a usual anti-vir should then be able to dectect most of the malware and delete it.

If you doubt it anyway you can completly wipe the HDD using the VM.

In addition, there are already posts on this topic:

1. Safe to connect to external drive?

2. Mac OSX: What is the safest way to access an unknown USB storage?

At First of all always use a virtual machine instead of your installed OS and mount it in read only mode when doing something with (probably)infectet externals!

This prevents your PC/Account from beeing infected by what ever is on this HDD. Most likley a usual anti-vir should then be able to dectect most of the malware and delete it.

If you doubt it anyway you can completly wipe the HDD using the VM.

In addition, there are already posts on this topic:

1. Safe to connect to external drive?

2. Mac OSX: What is the safest way to access an unknown USB storage?