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Description of problem: I installed Centos 7 on my laptop. The install went fine and I get to the login screen. I select the user and enter the password and then get these error messages. [Firmware Bug] the BIOS has corrupted the hw-PMU resources (MSR 38d is b0) mce: Unable to init device /dev/mcelog (RC: -5) tmpfs: Bad mount huge SR 2:0:0:0 [sr0] out of memory Please enter passphase for disk vggroup00-var If I enter the passphase it continues for awhile and prints some stuff and then reboots. It has the latest firmware update and 12GB of memory. It ran Centos 6 for years and also runs Windows 10 fine. Version-Release number of selected component (if applicable): How reproducible: I have only tried this once. Actual results: Bad install, had to reinstall Centos 6 Expected results: A workable install Additional info: This is my disc configuration [dan@laptop ~]$ df -h Filesystem Size Used Avail Use% Mounted on /dev/dm-2 145G 6.5G 131G 5% / tmpfs 5.8G 2.3M 5.8G 1% /dev/shm /dev/dm-15 413G 388G 3.8G 100% /backup /dev/sdb1 969M 65M 854M 8% /boot /dev/dm-12 193G 30G 154G 17% /home /dev/dm-10 9.5G 23M 9.0G 1% /tmp /dev/dm-13 9.5G 415M 8.6G 5% /var /dev/dm-14 4.7G 15M 4.5G 1% /var/log /dev/dm-16 4.7G 10M 4.5G 1% /var/log/audit /dev/dm-11 193G 64G 120G 35% /vm [dan@laptop ~]$ When reinstalling Centos 6 I got a message that a 5GB partition didn't have a filesystem. This could only be /var/log or /var/log/audit. Note that the error message: "Please enter the passphase for vggroup00-var" in Centos 7.7. When installing Centos 7.7 I used allocate space as a standard partition instead of LVM. This is because I didn't have any spare LVM space and when you select swap it sets the space to 0. (Also swap was allocated as a standard partition already). You then have to delete swap and add it again. I suspect that it allocated space in LVM even though I said allocate as standard partition and wiped out the LVM volumes formatting swap. Any way, this is what I think the problem is!