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Do I need an EFI partition for each 18.04 ubuntu I have on my HD?
The Next CEO of Stack OverflowGrub2 EFI: Where is my EFI partition?Which partition to select as device for boot loader in an EFI mode install?Partition for dual boot UEFI for Windows and UbuntuHow to change my /boot/efi mount partition?Installing Ubuntu 14.04 on EFI SystemDoes Ubuntu need this EFI partition?update-grub does not update /boot/efi/EFI/ubuntu/grub.cfgEFI boot partitionhow to create EFI partition from scratchEfi issue Ubuntu 18 after deleting windows and efi partition
I had to create an EFI partition to install ubuntu 18.04. Now I want to create another boot on the same HD with 18.04 again. Do I need to create another EFI partition?
system-installation uefi
asked Mar 18 at 17:06
Vitor AbellaVitor Abella
2,931113164
add a comment |
I had to create an EFI partition to install ubuntu 18.04. Now I want to create another boot on the same HD with 18.04 again. Do I need to create another EFI partition?
system-installation uefi
asked Mar 18 at 17:06
Vitor AbellaVitor Abella
2,931113164
So you will have two instances of Ubuntu 18.04 on one HDD?
– Pilot6
Mar 18 at 17:15
yes, @Pilot6 . The reason is irrelevant, but "My old 18.04 partition is going to fail soon due to bad block and Im moving to another one. As HP limits the number of partitions I can have, I care about creating new partitions".
– Vitor Abella
Mar 18 at 18:22
HP doesn't limit the number of partitions. MBR maybe does.
– Pilot6
Mar 18 at 18:24
@VitorAbella: If you're having accumulating bad blocks and impending data loss, you need to replace the entire disk, not just a single partition. Reserved blocks are shared across the whole drive.
– Ben Voigt
Mar 19 at 2:26
As always, I'd suggest reading this as a primer on UEFI. And then from a Ubuntu perspective you can either have multiple GRUBs managed by EFI, or one GRUB with muliple OSes managed by GRUB. But only ever the one ESP.
– Bob
Mar 19 at 2:46
add a comment |
I had to create an EFI partition to install ubuntu 18.04. Now I want to create another boot on the same HD with 18.04 again. Do I need to create another EFI partition?
system-installation uefi
asked Mar 18 at 17:06
Vitor AbellaVitor Abella
2,931113164
I had to create an EFI partition to install ubuntu 18.04. Now I want to create another boot on the same HD with 18.04 again. Do I need to create another EFI partition?
system-installation uefi
system-installation uefi
asked Mar 18 at 17:06
Vitor AbellaVitor Abella
2,931113164
asked Mar 18 at 17:06
Vitor AbellaVitor Abella
2,931113164
asked Mar 18 at 17:06
Vitor AbellaVitor Abella
2,931113164
asked Mar 18 at 17:06
Vitor AbellaVitor Abella
2,931113164
asked Mar 18 at 17:06
Vitor AbellaVitor Abella
2,931113164
2,931113164
So you will have two instances of Ubuntu 18.04 on one HDD?
– Pilot6
Mar 18 at 17:15
yes, @Pilot6 . The reason is irrelevant, but "My old 18.04 partition is going to fail soon due to bad block and Im moving to another one. As HP limits the number of partitions I can have, I care about creating new partitions".
– Vitor Abella
Mar 18 at 18:22
HP doesn't limit the number of partitions. MBR maybe does.
– Pilot6
Mar 18 at 18:24
@VitorAbella: If you're having accumulating bad blocks and impending data loss, you need to replace the entire disk, not just a single partition. Reserved blocks are shared across the whole drive.
– Ben Voigt
Mar 19 at 2:26
As always, I'd suggest reading this as a primer on UEFI. And then from a Ubuntu perspective you can either have multiple GRUBs managed by EFI, or one GRUB with muliple OSes managed by GRUB. But only ever the one ESP.
– Bob
Mar 19 at 2:46
add a comment |
So you will have two instances of Ubuntu 18.04 on one HDD?
– Pilot6
Mar 18 at 17:15
yes, @Pilot6 . The reason is irrelevant, but "My old 18.04 partition is going to fail soon due to bad block and Im moving to another one. As HP limits the number of partitions I can have, I care about creating new partitions".
– Vitor Abella
Mar 18 at 18:22
HP doesn't limit the number of partitions. MBR maybe does.
– Pilot6
Mar 18 at 18:24
@VitorAbella: If you're having accumulating bad blocks and impending data loss, you need to replace the entire disk, not just a single partition. Reserved blocks are shared across the whole drive.
– Ben Voigt
Mar 19 at 2:26
As always, I'd suggest reading this as a primer on UEFI. And then from a Ubuntu perspective you can either have multiple GRUBs managed by EFI, or one GRUB with muliple OSes managed by GRUB. But only ever the one ESP.
– Bob
Mar 19 at 2:46
So you will have two instances of Ubuntu 18.04 on one HDD?
– Pilot6
Mar 18 at 17:15
So you will have two instances of Ubuntu 18.04 on one HDD?
– Pilot6
Mar 18 at 17:15
yes, @Pilot6 . The reason is irrelevant, but "My old 18.04 partition is going to fail soon due to bad block and Im moving to another one. As HP limits the number of partitions I can have, I care about creating new partitions".
– Vitor Abella
Mar 18 at 18:22
yes, @Pilot6 . The reason is irrelevant, but "My old 18.04 partition is going to fail soon due to bad block and Im moving to another one. As HP limits the number of partitions I can have, I care about creating new partitions".
– Vitor Abella
Mar 18 at 18:22
HP doesn't limit the number of partitions. MBR maybe does.
– Pilot6
Mar 18 at 18:24
HP doesn't limit the number of partitions. MBR maybe does.
– Pilot6
Mar 18 at 18:24
@VitorAbella: If you're having accumulating bad blocks and impending data loss, you need to replace the entire disk, not just a single partition. Reserved blocks are shared across the whole drive.
– Ben Voigt
Mar 19 at 2:26
@VitorAbella: If you're having accumulating bad blocks and impending data loss, you need to replace the entire disk, not just a single partition. Reserved blocks are shared across the whole drive.
– Ben Voigt
Mar 19 at 2:26
As always, I'd suggest reading this as a primer on UEFI. And then from a Ubuntu perspective you can either have multiple GRUBs managed by EFI, or one GRUB with muliple OSes managed by GRUB. But only ever the one ESP.
– Bob
Mar 19 at 2:46
As always, I'd suggest reading this as a primer on UEFI. And then from a Ubuntu perspective you can either have multiple GRUBs managed by EFI, or one GRUB with muliple OSes managed by GRUB. But only ever the one ESP.
– Bob
Mar 19 at 2:46
add a comment |
2 Answers
2
active
oldest
votes
No, you only need one EFI partition. My dual-boot system shares the one partition between Windows and Ubuntu.
You can see it here with all the goofy Windows partitions. (My / partition is on a different physical drive)
answered Mar 18 at 17:07
Organic MarbleOrganic Marble
11.5k63459
so, when I install i choose my ubuntu efi partition that I already created?
– Vitor Abella
Mar 18 at 17:08
That's correct.
– Pilot6
Mar 18 at 17:08
I've only done it once. I created a new EFI partition, and the installer ignored it and used the existing Windows one.
– Organic Marble
Mar 18 at 17:09
@OrganicMarble That's not an EFI problem per se. Some computer's BIOSes always boot Windows if a Windows EFI binary is present, regardless of the user's boot choices. This is broken behavior, but since nearly all of the affected computers are several years old now, they're unlikely to be fixed.
– Michael Hampton
Mar 19 at 1:49
2
@OrganicMarble Oh, OK, I see what you mean. It doesn't really matter though, you can have as many EFI partitions as you want. If it bothers you, or you need the disk to be removable, you can move the relevant files from one EFI partition to the other (though you might have to tweak the boot order in the BIOS afterward).
– Michael Hampton
Mar 19 at 2:00
|
show 3 more comments
You need only one EFI partition for a computer in general.
No matter how many OS you have.
You may need multiple EFI partitions only in some special cases when you swap disks, change boot device in UEFI, etc.
answered Mar 18 at 17:07
Pilot6Pilot6
53.8k15110198
add a comment |
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2 Answers
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active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
No, you only need one EFI partition. My dual-boot system shares the one partition between Windows and Ubuntu.
You can see it here with all the goofy Windows partitions. (My / partition is on a different physical drive)
answered Mar 18 at 17:07
Organic MarbleOrganic Marble
11.5k63459
so, when I install i choose my ubuntu efi partition that I already created?
– Vitor Abella
Mar 18 at 17:08
That's correct.
– Pilot6
Mar 18 at 17:08
I've only done it once. I created a new EFI partition, and the installer ignored it and used the existing Windows one.
– Organic Marble
Mar 18 at 17:09
@OrganicMarble That's not an EFI problem per se. Some computer's BIOSes always boot Windows if a Windows EFI binary is present, regardless of the user's boot choices. This is broken behavior, but since nearly all of the affected computers are several years old now, they're unlikely to be fixed.
– Michael Hampton
Mar 19 at 1:49
2
@OrganicMarble Oh, OK, I see what you mean. It doesn't really matter though, you can have as many EFI partitions as you want. If it bothers you, or you need the disk to be removable, you can move the relevant files from one EFI partition to the other (though you might have to tweak the boot order in the BIOS afterward).
– Michael Hampton
Mar 19 at 2:00
|
show 3 more comments
No, you only need one EFI partition. My dual-boot system shares the one partition between Windows and Ubuntu.
You can see it here with all the goofy Windows partitions. (My / partition is on a different physical drive)
answered Mar 18 at 17:07
Organic MarbleOrganic Marble
11.5k63459
so, when I install i choose my ubuntu efi partition that I already created?
– Vitor Abella
Mar 18 at 17:08
That's correct.
– Pilot6
Mar 18 at 17:08
I've only done it once. I created a new EFI partition, and the installer ignored it and used the existing Windows one.
– Organic Marble
Mar 18 at 17:09
@OrganicMarble That's not an EFI problem per se. Some computer's BIOSes always boot Windows if a Windows EFI binary is present, regardless of the user's boot choices. This is broken behavior, but since nearly all of the affected computers are several years old now, they're unlikely to be fixed.
– Michael Hampton
Mar 19 at 1:49
2
@OrganicMarble Oh, OK, I see what you mean. It doesn't really matter though, you can have as many EFI partitions as you want. If it bothers you, or you need the disk to be removable, you can move the relevant files from one EFI partition to the other (though you might have to tweak the boot order in the BIOS afterward).
– Michael Hampton
Mar 19 at 2:00
|
show 3 more comments
No, you only need one EFI partition. My dual-boot system shares the one partition between Windows and Ubuntu.
You can see it here with all the goofy Windows partitions. (My / partition is on a different physical drive)
answered Mar 18 at 17:07
Organic MarbleOrganic Marble
11.5k63459
No, you only need one EFI partition. My dual-boot system shares the one partition between Windows and Ubuntu.
You can see it here with all the goofy Windows partitions. (My / partition is on a different physical drive)
answered Mar 18 at 17:07
Organic MarbleOrganic Marble
11.5k63459
edited Mar 18 at 17:10
answered Mar 18 at 17:07
Organic MarbleOrganic Marble
11.5k63459
answered Mar 18 at 17:07
Organic MarbleOrganic Marble
11.5k63459
answered Mar 18 at 17:07
Organic MarbleOrganic Marble
11.5k63459
11.5k63459
so, when I install i choose my ubuntu efi partition that I already created?
– Vitor Abella
Mar 18 at 17:08
That's correct.
– Pilot6
Mar 18 at 17:08
I've only done it once. I created a new EFI partition, and the installer ignored it and used the existing Windows one.
– Organic Marble
Mar 18 at 17:09
@OrganicMarble That's not an EFI problem per se. Some computer's BIOSes always boot Windows if a Windows EFI binary is present, regardless of the user's boot choices. This is broken behavior, but since nearly all of the affected computers are several years old now, they're unlikely to be fixed.
– Michael Hampton
Mar 19 at 1:49
2
@OrganicMarble Oh, OK, I see what you mean. It doesn't really matter though, you can have as many EFI partitions as you want. If it bothers you, or you need the disk to be removable, you can move the relevant files from one EFI partition to the other (though you might have to tweak the boot order in the BIOS afterward).
– Michael Hampton
Mar 19 at 2:00
|
show 3 more comments
so, when I install i choose my ubuntu efi partition that I already created?
– Vitor Abella
Mar 18 at 17:08
That's correct.
– Pilot6
Mar 18 at 17:08
I've only done it once. I created a new EFI partition, and the installer ignored it and used the existing Windows one.
– Organic Marble
Mar 18 at 17:09
@OrganicMarble That's not an EFI problem per se. Some computer's BIOSes always boot Windows if a Windows EFI binary is present, regardless of the user's boot choices. This is broken behavior, but since nearly all of the affected computers are several years old now, they're unlikely to be fixed.
– Michael Hampton
Mar 19 at 1:49
2
@OrganicMarble Oh, OK, I see what you mean. It doesn't really matter though, you can have as many EFI partitions as you want. If it bothers you, or you need the disk to be removable, you can move the relevant files from one EFI partition to the other (though you might have to tweak the boot order in the BIOS afterward).
– Michael Hampton
Mar 19 at 2:00
so, when I install i choose my ubuntu efi partition that I already created?
– Vitor Abella
Mar 18 at 17:08
so, when I install i choose my ubuntu efi partition that I already created?
– Vitor Abella
Mar 18 at 17:08
That's correct.
– Pilot6
Mar 18 at 17:08
That's correct.
– Pilot6
Mar 18 at 17:08
I've only done it once. I created a new EFI partition, and the installer ignored it and used the existing Windows one.
– Organic Marble
Mar 18 at 17:09
I've only done it once. I created a new EFI partition, and the installer ignored it and used the existing Windows one.
– Organic Marble
Mar 18 at 17:09
@OrganicMarble That's not an EFI problem per se. Some computer's BIOSes always boot Windows if a Windows EFI binary is present, regardless of the user's boot choices. This is broken behavior, but since nearly all of the affected computers are several years old now, they're unlikely to be fixed.
– Michael Hampton
Mar 19 at 1:49
@OrganicMarble That's not an EFI problem per se. Some computer's BIOSes always boot Windows if a Windows EFI binary is present, regardless of the user's boot choices. This is broken behavior, but since nearly all of the affected computers are several years old now, they're unlikely to be fixed.
– Michael Hampton
Mar 19 at 1:49
2
2
@OrganicMarble Oh, OK, I see what you mean. It doesn't really matter though, you can have as many EFI partitions as you want. If it bothers you, or you need the disk to be removable, you can move the relevant files from one EFI partition to the other (though you might have to tweak the boot order in the BIOS afterward).
– Michael Hampton
Mar 19 at 2:00
@OrganicMarble Oh, OK, I see what you mean. It doesn't really matter though, you can have as many EFI partitions as you want. If it bothers you, or you need the disk to be removable, you can move the relevant files from one EFI partition to the other (though you might have to tweak the boot order in the BIOS afterward).
– Michael Hampton
Mar 19 at 2:00
|
show 3 more comments
You need only one EFI partition for a computer in general.
No matter how many OS you have.
You may need multiple EFI partitions only in some special cases when you swap disks, change boot device in UEFI, etc.
answered Mar 18 at 17:07
Pilot6Pilot6
53.8k15110198
add a comment |
You need only one EFI partition for a computer in general.
No matter how many OS you have.
You may need multiple EFI partitions only in some special cases when you swap disks, change boot device in UEFI, etc.
answered Mar 18 at 17:07
Pilot6Pilot6
53.8k15110198
add a comment |
You need only one EFI partition for a computer in general.
No matter how many OS you have.
You may need multiple EFI partitions only in some special cases when you swap disks, change boot device in UEFI, etc.
answered Mar 18 at 17:07
Pilot6Pilot6
53.8k15110198
You need only one EFI partition for a computer in general.
No matter how many OS you have.
You may need multiple EFI partitions only in some special cases when you swap disks, change boot device in UEFI, etc.
answered Mar 18 at 17:07
Pilot6Pilot6
53.8k15110198
answered Mar 18 at 17:07
Pilot6Pilot6
53.8k15110198
answered Mar 18 at 17:07
Pilot6Pilot6
53.8k15110198
answered Mar 18 at 17:07
Pilot6Pilot6
53.8k15110198
53.8k15110198
add a comment |
add a comment |
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So you will have two instances of Ubuntu 18.04 on one HDD?
– Pilot6
Mar 18 at 17:15
yes, @Pilot6 . The reason is irrelevant, but "My old 18.04 partition is going to fail soon due to bad block and Im moving to another one. As HP limits the number of partitions I can have, I care about creating new partitions".
– Vitor Abella
Mar 18 at 18:22
HP doesn't limit the number of partitions. MBR maybe does.
– Pilot6
Mar 18 at 18:24
@VitorAbella: If you're having accumulating bad blocks and impending data loss, you need to replace the entire disk, not just a single partition. Reserved blocks are shared across the whole drive.
– Ben Voigt
Mar 19 at 2:26
As always, I'd suggest reading this as a primer on UEFI. And then from a Ubuntu perspective you can either have multiple GRUBs managed by EFI, or one GRUB with muliple OSes managed by GRUB. But only ever the one ESP.
– Bob
Mar 19 at 2:46