Reinstalling correct grub package to Acer device 18.04

After installing ubuntu to my machine (Acer Aspire F5-572G), UEFI is unable to detect grub as the boot manager. The closest answer to fixing this is Unable to install Ubuntu on Acer Aspire ES1-533.

The issue is that this solution above proposess sudo apt-get install --reinstall grub-efi-amd64. However my machine is of Intel 64 bit architecture.. and not AMD.. When preforming apt-cache search grub-efi it provides the possible packages:

grub-efi grub-efi-amd64 grub-efi-amd64-bin grub-efi-amd64-dbg grub-efi-amd64-signed grub-efi-ia32 grub-efi-ia32-bin grub-efi-ia32-dbg 

Since my computer is Intel 64-bit arch, I’m not completely sure of the consequences either installing a ia32 or amd64…

Hence I am wanting to know:

  • Would amd64 bit work?
  • Is there any risk to choosing ia32 with 64 bit archeture?
  • Any other possible method of getting grub noticed by UEFI?

Note: I have wiped hard disk recently and able to reinstall ubuntu to hard drive if anything breaks 🙂


Can any malware survive disk formatting and removing all partitions before reinstalling the OS? [duplicate]

This question already has an answer here:

  • Is making a clean install enough to remove potential malware? 8 answers

Can any malware survive disk formatting and removing all partitions before reinstalling the OS? If that is the case, then what can one do to be certain of having cleared all malware from his pc?

What is equivalent of reinstalling Windows 10 in upgrade mode(software + data remains with new OS) in Ubuntu

what happened: Was using Ubuntu 18.10 on Acer Nitro AN515-52 , got error “initramfs unpacking failed…” after updating system , previous 2 kernels are also not booting due to some other different errors.

Problem: I built & installed few software with certain config which I dont have right now. Is there any way in which newer ubuntu 19 or ubuntu 18 can be installed so that the user data & softwares remains.

After Reinstalling Windows 10 And Formatting EFI Partition, Ubuntu Is not booting

I had dual boot PC with Ubuntu and Windows 10. I reinstalled Windows 10 and Deleted EFI partion before reinstalling Windows 10. Now I want to add grub but shimx64.efi is not present in EFI. Here is pastebin log generated by boot-repair tool:

Please Help me, Thank you.

“This is not a supported method of installing the operating system” when reinstalling OS X

I see somebody already asked same question but I couldn’t find a answer, so I am asking it again and will provide as detail as possible information.

I am helping a friend to reinstall OS X on his MacBook Pro. enter image description here

The laptop is Macbook Pro , model A1278, purchased around 2012?

I can enter Disk Utility and see it has a 240G disk, and a “Apple disk Image”, I assume it’s the factory reinstallation image.

The harddrive was partitioned as two partitions, one for Mac and one for Windows. My friend still want to keep the Windows partition ( Bootcamp), so I will not reformat the whole disk.

I have tried following steps:

  1. erase/reformated the partition ( the “empty” one ).

  2. Boot from Cmd-R , then “Reinstall MacOS”. the result is “This is not a supported method of installing the operating system” enter image description here It showed “El Capitan”, so I guess the factory image is El Capitan.

  3. Downloaded a El Capitan ISO, created a Boot-able USB key from it ( using Windows application TransMac ). Booted machine with “Option” key pressed, selected to boot from USB ( the Kingston disk), then “Reinstall MacOS”. Got exact same “This is not a supported method of installing the operating system”.

  4. Booted with Cmd-Option-R, it showed “Starting Internet Recovery,This may take a while.”. Seems working OK, but then got “The recovery server could not be contacted” .enter image description here

I have tried with WIFI connection and Ethernet connection, both with same error. Since it showed “High Sierra” logo, the Internet was working before it enter the real installation step.

It looks like as soon as the system start to install the OS, the network interface is disabled somehow.

I tried to entered terminal, I can see there is no IP on the en0 NIC. I even tried to use command line to configure a static IP on en0 and setup default route, then I can ping public IP like, but I couldn’t get DNS configured under the terminal.

networksetup command is not available under the recovery terminal.

scutil command is available, but “list” command doesn’t show en0 or WIFI interface at all, so I can’t add a DNS configuration. Tried to manually edit “/etc/resolv.conf” , doesn’t work. enter image description here

Now I am totally stuck. I am familiar with Windows/Linux but not a Mac guy, not sure what could be the problem. Would appreciate any suggestion.

Thanks, Jack

macOS High Sierra not reinstalling— locked OS x Base System

I dont really know what happened to our mac but all I know is its not starting up so I shut it down. But when I tried opening it again, its not booting up. I followed instructions on youtube on how to fix it but its still not working so what I did was disconnect all the wires plugged in, including the wire for the power then let it rest. When my sister came home, she tried opening it again and she got to do troubleshoot it. Now, we it booted up, we can only see “macOS Utilities” (as seen on the photo). When tried to see what’s wrong if the disk is broken or what but we can only see First Aid and Partition. Erase, Restore and Unmount are grayed out. When we click on the First Aid, what we only see is what showing on the photo. We tried reinstalling the macOS High Sierra but its telling us that the disk is locked. Now I dont know how to unlock it or how its gonna be fixed. Please, I really need your help. enter image description here enter image description here enter image description hereenter image description here