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Drive Encryption: Lenovo T490 devices randomly stop booting

Hi, we have an ongoing issue with a customer who deployed Lenovo T490 devices. The service request with McAfee hasn't yielded any satisfying results, the customer is raging and starts to question the usage of McAfee products altogether. This is a really precarious situation and the tension is really high over this problem.

This is what we are experiencing: On multiple Lenovo T490 devices, every now and then the system partition gets corrupted. It starts with a customer call that the preboot authentication screen is not showing. What we have to do then, and this is really time consuming: We have to boot EETech, remove DE, and repair the system partition using bcdboot.

Note that the customer also uses other Lenovo devices which don't have this problem.

Has anyone had the same issues? 20N2 and 20N3 model types are being used with the Lenovo T490 models.

Also: We are using Drive Encryption 7.2.9.17 with the latest HW compat XML file.

4 Replies
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Re: Drive Encryption: Lenovo T490 devices randomly stop booting

Hi kvk,

Thank you for your post.

We are aware of the PBA not showing on Lenovo T490. Please raise a Service Request, and we will continue helping you to resolve this issue.

Thank you.
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Kind Regards,
Sheila Bloise
Technical Support Engineer
Customer Success Group
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Re: Drive Encryption: Lenovo T490 devices randomly stop booting

Hi Sheila, thanks your reply.

We did already raise a service request and there is no confirmed solution so far. This is the SR number in case you want to have a good read: SR # <4-21003412481>

Just today we received a modified HW XML (98) with compat flags for the T490. So does the modified HW XML also fix the corrupted system partition issue? Because when this issue occurs, an emergency boot does not help.

We then have to fully decrypt and run the following in a PE environment to fix boot:

diskpart
select disk 0
select partition 1
delete partition override
create partition efi
format quick fs=fat32 label="System"
assign letter=S
exit

bcdboot C:\Windows

 

Kind Regards

Kevin

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Message 4 of 5

Re: Drive Encryption: Lenovo T490 devices randomly stop booting

Hi kvk,

Yes, its was your issue I came across.

Since your issue is being worked by our engineering team, we can continue providing you support through your service request.

Thank you.
Was my reply helpful?If you find this post useful, Please give it a Kudos!

Please don't forget to select "Accept as a solution" in my reply and together we can help other members?

Kind Regards,
Sheila Bloise
Technical Support Engineer
Customer Success Group
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Message 5 of 5

Re: Drive Encryption: Lenovo T490 devices randomly stop booting

Hi SB1,

well the reason I'm posting here is because I feel our case is not taken seriously... We are currently testing a way to decrypt and re-encrypt machines on a broad range and minimize the time without an active encryption because there is no other way other than this or emergency booting the systems manually. From a management view this honestly is a complete joke and a waste of time.

Especially since there seems to be an internal McAfee tool with which you can change the HW compat flags directly.

Kind Regards

Kevin

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