Since yesterday, I added a brand new SSD in my PC, and I am experiencing a very fast boot from grub menu. The problem is before arriving to this menu, I must wait for a long time (~30s in most cases). I installed grub on the SSD. After the BIOS, I sometimes see "Grub loading" immediately, sometimes just a blinking cursor, but the time to reach the menu seems to be the same. I tried adding debug=disk (and even debug=all to my grub.cfg), but logs appear only after the unexplained period of time waiting ends.
I have 3 disks: - sda, marked as bootable with a windows boot loader on it - sdb, which is the SSD - sdc, which holds the swap partition and a data partition. It had my previous installation of Fedora 18 until yesterday
parted description:
Model: ATA ST3250410AS (scsi)
Disk /dev/sda: 250GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 32.3kB 250GB 250GB primary ntfs boot
Model: ATA M4-CT128M4SSD2 (scsi)
Disk /dev/sdb: 128GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 1075MB 1074MB primary ext4 boot
2 1075MB 11.8GB 10.7GB primary ext4
3 11.8GB 33.7GB 21.9GB primary ext4
Model: ATA ST3160827AS (scsi)
Disk /dev/sdc: 160GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 2149MB 2147MB primary linux-swap(v1)
2 52.4GB 160GB 107GB primary fat32 lba
When going under Windows (on sda1), I also have unexplained hanging times when shutting down, but this has occurred first one year ago.
EDIT Unplugging the 250GB drive makes the latency go away. The HDD LED does not blink during the waiting time.
What is going on?