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Which partition to make active?
Trouble installing a new Hard DriveExtending primary partition that is blocked by an adjacent recovery partitionWhy can't I make this partition active on Windows 10?My drive has the active flag, but not boot — is it necessary?What will be the partition order after deleting C and System Reserved only during Windows 7 installation?Windows 10 pro does not boot from SSDPartition disappeared after shrinkingModified system reserved partition but now no boot device found error(code:0xc000021a) on dual boot system(Windows 10 & Ubuntu LTS 18.04)Windows 10 not booting from SSD cloned from HDDSetting C drive as active disk
In Windows 10 "Disk Management" I accidentally change the active partition to another drive and now I can not remember which one should be active. My C: is an SSD has 4 partitions:
System reserved 500MB
C: drive
100GB unallocated for provisioning
470MB recovery partition
Now should I make C: partition active or the partition labeled system reserved 500MB ?
windows-10 boot
asked 3 hours ago
WelliamWelliam
3154725
add a comment |
In Windows 10 "Disk Management" I accidentally change the active partition to another drive and now I can not remember which one should be active. My C: is an SSD has 4 partitions:
System reserved 500MB
C: drive
100GB unallocated for provisioning
470MB recovery partition
Now should I make C: partition active or the partition labeled system reserved 500MB ?
windows-10 boot
asked 3 hours ago
WelliamWelliam
3154725
add a comment |
In Windows 10 "Disk Management" I accidentally change the active partition to another drive and now I can not remember which one should be active. My C: is an SSD has 4 partitions:
System reserved 500MB
C: drive
100GB unallocated for provisioning
470MB recovery partition
Now should I make C: partition active or the partition labeled system reserved 500MB ?
windows-10 boot
asked 3 hours ago
WelliamWelliam
3154725
In Windows 10 "Disk Management" I accidentally change the active partition to another drive and now I can not remember which one should be active. My C: is an SSD has 4 partitions:
System reserved 500MB
C: drive
100GB unallocated for provisioning
470MB recovery partition
Now should I make C: partition active or the partition labeled system reserved 500MB ?
windows-10 boot
windows-10 boot
asked 3 hours ago
WelliamWelliam
3154725
asked 3 hours ago
WelliamWelliam
3154725
asked 3 hours ago
WelliamWelliam
3154725
asked 3 hours ago
WelliamWelliam
3154725
asked 3 hours ago
WelliamWelliam
3154725
3154725
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
The partition flagged "active" should be the boot(loader) one. That is, the partition with BOOTMGR (and the BCD) on it.
On a typical fresh Windows 10 installation, this would be the "System Reserved" partition, yes.
Of course, this only applies to MBR disks (booted in BIOS/CSM compatibility mode). GPT disks should instead be using a EFI System Partition, identified by the partition ID rather than any "active" flag. Windows can only boot GPT disks in UEFI mode.
answered 3 hours ago
BobBob
46.1k20140173
The C: drive labeled "boot" but it is not this partition it should be the "system reserved" labeled "System" ?
– Welliam
3 hours ago
1
@Welliam The "boot" label in Disk Management is a lie. The only way to be completely sure is to mount the partition and check for a BOOTMGR, though 9 times out of 10 you can guess it's just the System Reserved partition. In the event that you do end up setting the wrong partition, this can be fixed by booting from a Windows install DVD/USB and usingdiskpartfrom the command prompt it provides. Automatic boot repair might also fix it.
– Bob
3 hours ago
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The partition flagged "active" should be the boot(loader) one. That is, the partition with BOOTMGR (and the BCD) on it.
On a typical fresh Windows 10 installation, this would be the "System Reserved" partition, yes.
Of course, this only applies to MBR disks (booted in BIOS/CSM compatibility mode). GPT disks should instead be using a EFI System Partition, identified by the partition ID rather than any "active" flag. Windows can only boot GPT disks in UEFI mode.
answered 3 hours ago
BobBob
46.1k20140173
The C: drive labeled "boot" but it is not this partition it should be the "system reserved" labeled "System" ?
– Welliam
3 hours ago
1
@Welliam The "boot" label in Disk Management is a lie. The only way to be completely sure is to mount the partition and check for a BOOTMGR, though 9 times out of 10 you can guess it's just the System Reserved partition. In the event that you do end up setting the wrong partition, this can be fixed by booting from a Windows install DVD/USB and usingdiskpartfrom the command prompt it provides. Automatic boot repair might also fix it.
– Bob
3 hours ago
add a comment |
The partition flagged "active" should be the boot(loader) one. That is, the partition with BOOTMGR (and the BCD) on it.
On a typical fresh Windows 10 installation, this would be the "System Reserved" partition, yes.
Of course, this only applies to MBR disks (booted in BIOS/CSM compatibility mode). GPT disks should instead be using a EFI System Partition, identified by the partition ID rather than any "active" flag. Windows can only boot GPT disks in UEFI mode.
answered 3 hours ago
BobBob
46.1k20140173
The C: drive labeled "boot" but it is not this partition it should be the "system reserved" labeled "System" ?
– Welliam
3 hours ago
1
@Welliam The "boot" label in Disk Management is a lie. The only way to be completely sure is to mount the partition and check for a BOOTMGR, though 9 times out of 10 you can guess it's just the System Reserved partition. In the event that you do end up setting the wrong partition, this can be fixed by booting from a Windows install DVD/USB and usingdiskpartfrom the command prompt it provides. Automatic boot repair might also fix it.
– Bob
3 hours ago
add a comment |
The partition flagged "active" should be the boot(loader) one. That is, the partition with BOOTMGR (and the BCD) on it.
On a typical fresh Windows 10 installation, this would be the "System Reserved" partition, yes.
Of course, this only applies to MBR disks (booted in BIOS/CSM compatibility mode). GPT disks should instead be using a EFI System Partition, identified by the partition ID rather than any "active" flag. Windows can only boot GPT disks in UEFI mode.
answered 3 hours ago
BobBob
46.1k20140173
The partition flagged "active" should be the boot(loader) one. That is, the partition with BOOTMGR (and the BCD) on it.
On a typical fresh Windows 10 installation, this would be the "System Reserved" partition, yes.
Of course, this only applies to MBR disks (booted in BIOS/CSM compatibility mode). GPT disks should instead be using a EFI System Partition, identified by the partition ID rather than any "active" flag. Windows can only boot GPT disks in UEFI mode.
answered 3 hours ago
BobBob
46.1k20140173
answered 3 hours ago
BobBob
46.1k20140173
answered 3 hours ago
BobBob
46.1k20140173
answered 3 hours ago
BobBob
46.1k20140173
46.1k20140173
The C: drive labeled "boot" but it is not this partition it should be the "system reserved" labeled "System" ?
– Welliam
3 hours ago
1
@Welliam The "boot" label in Disk Management is a lie. The only way to be completely sure is to mount the partition and check for a BOOTMGR, though 9 times out of 10 you can guess it's just the System Reserved partition. In the event that you do end up setting the wrong partition, this can be fixed by booting from a Windows install DVD/USB and usingdiskpartfrom the command prompt it provides. Automatic boot repair might also fix it.
– Bob
3 hours ago
add a comment |
The C: drive labeled "boot" but it is not this partition it should be the "system reserved" labeled "System" ?
– Welliam
3 hours ago
1
@Welliam The "boot" label in Disk Management is a lie. The only way to be completely sure is to mount the partition and check for a BOOTMGR, though 9 times out of 10 you can guess it's just the System Reserved partition. In the event that you do end up setting the wrong partition, this can be fixed by booting from a Windows install DVD/USB and usingdiskpartfrom the command prompt it provides. Automatic boot repair might also fix it.
– Bob
3 hours ago
The C: drive labeled "boot" but it is not this partition it should be the "system reserved" labeled "System" ?
– Welliam
3 hours ago
The C: drive labeled "boot" but it is not this partition it should be the "system reserved" labeled "System" ?
– Welliam
3 hours ago
1
1
@Welliam The "boot" label in Disk Management is a lie. The only way to be completely sure is to mount the partition and check for a BOOTMGR, though 9 times out of 10 you can guess it's just the System Reserved partition. In the event that you do end up setting the wrong partition, this can be fixed by booting from a Windows install DVD/USB and using
diskpart from the command prompt it provides. Automatic boot repair might also fix it.– Bob
3 hours ago
@Welliam The "boot" label in Disk Management is a lie. The only way to be completely sure is to mount the partition and check for a BOOTMGR, though 9 times out of 10 you can guess it's just the System Reserved partition. In the event that you do end up setting the wrong partition, this can be fixed by booting from a Windows install DVD/USB and using
diskpart from the command prompt it provides. Automatic boot repair might also fix it.– Bob
3 hours ago
add a comment |
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