I've wanted dualboot Win 10 and CentOS, but TL;DR I ended up with non-booting notebook. bootrec /scanOs
can't find Windows installation (it is still there though).
Auto repair doesn't work, neither bcdboot
or bootrec /fixboot/fixmbr/rebuildbcd
.
So my question: is removing EFI partition completely (diskpart
) and recreating it from the scratch (bcdboot
) worth a try?
If it helps: Lenovo Thinkpad X260, SSD, GPT partition style, Win 10 Pro
(I would try to recreate the situation in VirtualBox, but available PC isn't capable of such thing.)
EDIT #1: I've removed the CentOS partition later on (tried to install Windows 10 there hoping for repaired boot manager but with no luck). So it's unformatted 30 GB space now
EDT #2: This is output from diskpart
:
DISKPART> list disk Disk ### Status Size Free Dyn Gpt -------- ----------- ------- ------- --- --- Disk 0 Online 238 GB 1024 KB * DISKPART> list partition Partition ### Type Size Offset ------------- ----------------- ------- ------- Partition 1 System 260 MB 1024 KB Partition 2 Reserved 16 MB 201 MB Partition 3 Unknown 1024 KB 277 MB Partition 4 Primary 206 GB 279 MB Partition 5 Primary 30 GB 206 GB Partition 6 Recovery 1000 MB 237 GB DISKPART> list vol Volume ### Ltr Label Fs Type Size Status Info ---------- --- ----------- ----- ---------- ------- --------- -------- Volume 0 C DISK NTFS Partition 206 GB Healthy Volume 1 RAW Partition 30 GB Healthy Volume 2 E SYSTEM FAT32 Partition 260 MB Healthy Hidden Volume 3 D WinRE_DRV NTFS Partition 1000 MB Healthy Hidden
EFI should be partition 1 / volume 2
EDIT #3: diskpart detail partition 1:
Type : c12a7328-f81f-11d2-ba4b-00a0c93ec93b Hidden : Yes Required: Yes Attrib : 0x0000000000000001 Offset in bytes: 1048576
EDIT #4: Boot menu:
#1 Windows boot manager (does nothing; black screen and takes me back here) #2 ATA HDD0: SanDisk SD8...001 (same as #1) #3 USB (my windows install media) #4 PCI LAN
UPDATE #1 The boot menu allows me to show Diagnostic splash screen where I noticed that System BIOS shadowed
Video BIOS shadowed
.